STIHL RLA 240.0 Cordless Lawn Mower Instruction Manual

: July 30, 2024
: STIHL

STIHL RLA 240.0 Cordless Lawn Mower

Specifications

Model: RLA 240.0
Weight: 2 – 25 lbs
Height Range: 25 – 47 inches
Width Range: 47 – 72 inches
Depth Range: 72 – 95 inches
Voltage: 95 – 119 V

FAQ

What should I do if the battery indicator shows a red light?

If the battery indicator shows a red light, it indicates that the battery is either too warm or too cold. Allow the battery to reach the optimal temperature range before use.

Which battery models are recommended for this product?

We recommend using STIHL AK 20 or STIHL AK 30 batteries for optimal performance of this tool.

How should I maintain the battery?

Avoid exposing the battery to metallic objects, high pressure, microwaves, chemicals, or salts. Keep the battery in a safe and dry place when not in use.

Introduction

Dear Customer,
Thank you for choosing STIHL. We develop and manufacture our quality products to meet our customers’ requirements. The products are designed for reliability even under extreme conditions.
STIHL also stands for premium service quality. Our dealers guarantee competent advice and instruction as well as comprehensive service support.
STIHL expressly commit themselves to a sustainable and responsible handling of natural resources. This user manual is intended to help you use your STIHL product safely and in an environmentally friendly manner over a long service life.
We thank you for your confidence in us and hope you will enjoy working with your STIHL product.
Dr. Nikolas Stihl
IMPORTANT! READ BEFORE USING AND KEEP IN A SAFE PLACE FOR REFERENCE.

Guide to Using this Manual

Applicable Documents

This instruction manual is a translation of the original manufacturer’s instructions in the sense of EC Directive 2006/42/EC.

Local safety regulations apply.

In addition to this instruction manual, read, understand and keep the following documents:
- Safety information for the STIHL battery AK
- Instruction manual for the STIHL chargers AL 101, 301, 500
- Safety information for STIHL batteries and products with built-in battery: www.stihl.com/safety-data-sheets

Warning Notices in Text

DANGER

This notice refers to risks which result in serious or fatal injury.
Serious or fatal injuries can be avoided by taking the precautions mentioned.

WARNING

This notice refers to risks which can result in serious or fatal injury.
Serious or fatal injuries can be avoided by taking the precautions mentioned.

NOTICE

This notice refers to risks which can result in damage to property.
Damage to property can be avoided by taking the precautions mentioned.

Symbols in Text

This symbol refers to a chapter in this instruction manual.

Overview

Lawn Scarifier

Handlebar
The handlebar is used to hold, guide and transport the lawn scarifier.
Control bar
The control bar switches the installed roller on and off together with the locking button.
Discharge flap
The discharge flap closes off the discharge chute.
Quick-clamping devices
The quick-clamping devices are used to adjust and fold down the handlebar.
Upper transport handle
The upper transport handle is used to carry the lawn scarifier.
Rotary wheel
The rotary wheel is used to set the working depth.
Lower transport handle
The lower transport handle is used to carry and upend the lawn scarifier.
Scarifying roller
The scarifying roller is used to scarify the lawn.
Combing roller
The combing roller is used to comb the lawn.
Grass catcher box
The grass catcher box collects the material removed from the lawn.
Locking button
The locking button switches the installed roller on and off together with the control bar.
LEDs
The LEDs indicate the battery charge state and faults.
Button
The button activates the LEDs on the battery.
Battery
The battery supplies the lawn scarifier with power.
Flap
The flap covers the battery.
Battery compartment
The battery compartment holds the battery.

Rating plate with machine number

Symbols
The symbols can be on the lawn scarifier or battery and have the following meaning:

Safety Precautions

Warning Symbols

WARNING
The warning symbols on the lawn scarifier or battery have the following meaning:

Follow the safety instructions and their measures.
Read, understand and keep the instruction manual.
Wear safety glasses.
Keep hands and feet away from the rotating roller.
Beware of objects being thrown up –keep a safe distance and keep other people away.
Remove the battery during work stoppages, cleaning, transport, storage, maintenance or repair.
Protect the lawn scarifier from rain and humidity.
Remove the battery during work stop‐pages, transport, storage, maintenance or repair.
Protect the battery from heat and fire.
Protect the battery from rain and moisture. Do not immerse in liquids.

Intended Use

The STIHL lawn scarifier RLA 240.0 Is used for the following applications:

With the scarifying roller: scarifying the lawn
With the combing roller: combing the lawn
The lawn scarifier must not be used when it is raining.
The lawn scarifier is supplied with power by a STIHL AK battery.
STIHL recommends using the STIHL AK 20 or STIHL AK 30 battery.

WARNING

Batteries not approved by STIHL for the lawn scarifier may cause fires and explosions. This may result in serious or fatal injury to people and damage to property.
Use the lawn scarifier with a STIHL AK batter.
Failure to use the lawn scarifier or battery as intended may result in serious or fatal injury to people and damage to property.
Use the lawn scarifier and battery as described in this instruction manual.

Requirements for the User

WARNING

Uninstructed users cannot recognise or evaluate the dangers posed by the lawn scarifier and battery.This may result in serious or fatal injury to the user or other people.
Read, understand and keep the instruction manual.
If passing on the lawn scarifier or battery to another person:provide them with the instruction manual also.
Make sure that the user meets the following conditions:
- The user is rested.
- The user is physically, sensorily and mentally capable of operating the lawn scarifier and battery and working with them.If the user is physically, sensorily or mentally impaired, the machine must only be used under supervision or following instruction by a responsible person.
- The user can recognise and evaluate the dangers posed by the lawn scarifier and battery.
- The user is aware that they are responsible for accidents and damage.
- The user is of legal age or the user is being trained under supervision in a profession in accordance with national regulations.
- The user has received instruction from a STIHL specialist dealer or a competent person before using the lawn scarifier for the first time.
- The user is not impaired by alcohol, medicines or drugs.
If anything is unclear: consult a STIHL specialist dealer.

Clothing and Equipment

WARNING

Objects may be thrown up at high velocity while working. This may result in injury to the user.
Wear close-fitting safety glasses. Suitable safety glasses are tested in accordance with EN 166 or national regulations and available commercially with the corresponding marking.
Wear long trousers made from resistant material.
Dust may be stirred up while working. Breathing in dust may be harmful to health and cause allergic reactions.
If dust is stirred up: wear a dust mask.
Unsuitable clothing may get caught in wood, brambles and in the lawn scarifier. Users without suitable clothing can be seriously injured.
Wear close-fitting clothing.
Remove scarves and jewellery.
The user may come into contact with the roller during cleaning, maintenance or transport. This may result in injury to the user.
Wear work gloves made from resistant material.
Wearing unsuitable footwear may cause the user to slip. This may result in injury to the user.
Wear sturdy, closed-toed footwear with high-grip soles.
Noise is produced while working. Noise may damage the hearing.
Wear hearing protection.

Work Area and Surroundings

WARNING

Bystanding people, children and animals cannot recognise or evaluate the dangers posed by the lawn scarifier and high-velocity objects. This may result in serious injury to bystanding people, children and animals and damage to property.
- Keep by standing people, children and animals out of the work area.
- Maintain a distance from objects.
- Do not leave the lawn scarifier unattended.
- Make sure that children cannot play with the lawn scarifier.
Working in the rain may cause the user to slip. This may result in serious or fatal injury to the user.
In case it rains: Do not continue work.
The lawn scarifier is not waterproof. Working in the rain or in a damp environment may result in electric shock. This may result in serious or fatal injury to the user and damage to the lawn scarifier.
Do not work in the rain or in a damp environment.
Electrical components of the lawn scarifier may produce sparks. Sparks may cause fires and explosions in highly flammable or explosive environments. This may result in serious or fatal injury to people and damage to property.
Do not work in a highly flammable or explosive environment.

Battery

WARNING

Bystanders, children and animals cannot recognize or assess the dangers of the battery. Bystanders, children and animals may be seriously injured.
- Keep bystanders, children and animals away from the work area.
- Do not leave the battery unattended.
- Make sure that children cannot play with the battery.
The battery is not protected against all ambient conditions. If the battery is exposed to certain ambient conditions, the battery may catch fire, explode or be irreparably damaged. This may result in serious injury to people and damage to property.
- Protect battery from heat and fire.
- Do not throw the battery into a fire.
- Do not charge, use and store the battery outside of the specified temperature limits,
- Protect the battery from rain and moisture and do not immerse it in liquids.
- Keep battery away from small metal parts.
- Do not expose the battery to high pressure.
- Do not expose the battery to microwaves.
- Protect the battery from chemicals and salts.

Safe Condition

Lawn Scarifier

The lawn scarifier is in safe condition when the following conditions are met:

The lawn scarifier is not damaged.
The lawn scarifier is clean and dry.
The controls are working and have not been modified.
If material removed from the lawn is to be collected in the grass catcher box: the grass catcher box is correctly attached.
If material removed from the lawn is to be ejected to the rear: the grass catcher box is detached and the discharge flap is closed.
The roller is correctly attached.
Genuine STIHL accessories for this lawn scarifier are attached.
The accessories are correctly attached.

WARNING

If not in safe condition, components may no longer operate correctly and safety devices may be disabled. This may result in serious or fatal injury to people.

Do not use a damaged lawn scarifier.
If the lawn scarifier is dirty: clean the lawn scarifier.
If the lawn scarifier is wet: dry the lawn scarifier.
Do not modify the lawn scarifier.
If the controls are not working: do not use the lawn scarifier.
If material removed from the lawn is to be collected in the grass catcher box: attach the grass catcher box as described in this instruction manual.
Attach genuine STIHL accessories for this lawn scarifier.
Attach the roller as described in this instruction manual.
Attach accessories as described in this instruction manual or in the instruction manual for the accessories.
Do not insert objects into the apertures in the lawn scarifier.
Replace worn or damaged warning signs.
If anything is unclear: consult a STIHL specialist dealer.

Rollers
The scarifying roller and the combing roller are in safe condition when the following conditions are met:

The shaft, blades, spring tines and attachments are not damaged.
The shaft, blades and spring tines are not deformed.
The roller is correctly attached.
The blades and spring tines are burr-free.
The minimum length of the blades is not fallen below, 20.2.

WARNING

In unsafe condition, parts of the blade and spring tine may come loose and be expelled.This may result in serious injury to people.
- Use undamaged blades, spring tines and attachments.
- If the minimum length of the blades is fallen below: replace the scarifying roller.
- If anything is unclear: consult a STIHL specialist dealer.

Battery

The battery is in a safe condition if the following points are observed:

Battery is undamaged.
The battery is clean and dry.
Battery functions properly and has not been modified.

WARNING

A battery that is not in a safe condition cannot operate safely. Persons may be seriously injured.
- Never work with a damaged battery.
- Never attempt to charge a damaged or defective battery.
- If the battery is dirty: Clean the battery.
- If the battery is wet or damp: Allow the battery to dry, 20.5.
- Never attempt to modify the battery.
- Never insert objects in the battery’s openings.
- Never bridge the battery’s contacts with metallic objects (short circuit).
- Do not open the battery.
- Replace worn or damaged labels.
Fluid may leak from a damaged battery. If that liquid comes into contact with the skin or eyes, the skin or eyes may be irritated.
- Avoid contact with the liquid.
- If skin contact occurs: Wash affected areas of skin with plenty of water and soap.
- In the event of contact with eyes: Rinse eyes with plenty of water for at least 15 minutes and consult a doctor.
A damaged or defective battery may smell unusual, emit smoke or burn. Persons may be seriously or fatally injured, and property may be damaged.
- If the battery smells unusual or emits smoke: do not use the battery and keep it away from combustible substances.
- If the battery catches fire: Attempt to extinguish the battery with a fire extinguisher or water.

Working

WARNING

In certain situations, the user may no longer be able to concentrate on their work. This may result in the user stumbling, falling and becoming seriously injured.
- Work calmly and carefully.
- If the light and visibility conditions are poor: do not use the lawn scarifier.
- Operate the lawn scarifier alone.
- Watch out for obstacles.
- Do not tilt the lawn scarifier.
- Work standing on the ground and maintain balance.
- If signs of fatigue occur: take a break.
- If scarifying or combing on a slope: scarify or comb across the slope.
- Do not scarify or comb on slopes with an inclination greater than 25° (46.6%).
The turning roller may cut the user. This may result in serious injury to the user.
Do not touch a turning roller.
Hard objects hitting the turning roller can damage the lawn scarifier.
- If a hard object hits the turning roller, switch off the lawn scarifier, remove the battery and check the lawn scarifier for damage.
- If the lawn scarifier is damaged: consult a STIHL specialist dealer.
If the roller is blocked by an object and the object is removed while the engine is running, the roller may move and the user may be seriously injured.
- Switch the lawn scarifier off and remove the battery. Only then remove the object.
- Check the lawn scarifier for damage.
- If the lawn scarifier is damaged: consult a STIHL specialist dealer.
If the lawn scarifier changes or starts to behave differently when working, it may not be in safe condition. This may result in serious injury to people and damage to property.
Stop working, switch off the lawn scarifier, remove the battery and consult a STIHL specialist dealer.
The lawn scarifier may cause vibrations when working.
- Wear gloves.
- Take breaks.
- If signs of a circulatory disturbance occur: consult a doctor.
If the roller hits a foreign object when working, the roller or parts of it may be thrown up at high velocity. This may result in injury to people and damage to property.
- Remove foreign objects from the work area.
- Mark and drive round obstacles (e.g. roots, tree stumps).
When the control bar is released, the roller continues to turn for a short time. This may result in serious injury to people.
Wait until the roller is no longer turning.
Sparks can be produced if the turning roller hits a hard object. Sparks may cause fires in highly flammable environments. This may result in serious or fatal injury to people and damage to property.
- Do not work in a highly flammable environment.
If the lawn scarifier is stopped on a sloping surface, it may unintentionally roll away. This may result in injury to people and damage to property.
- Only let go of the lawn scarifier if it is on a level surface and cannot roll away by itself.
If objects are attached to the handlebar, the additional weight may cause the lawn scarifier to tip over. This may result in injury to people and damage to property.
- Do not attach objects to the handlebar.
If the lawn scarifier is left unattended during a work break, bystanding or uninstructed people can start the lawn scarifier and be seriously injured.
- If the lawn scarifier is unattended, switch off the lawn scarifier and remove the battery.
  DANGER
If working near live wires, the roller may come into contact with live wires and damage them. This may result in serious or fatal injury to the user.
- Do not work near live wires.
The user may be struck by lighting if working during a thunderstorm. This may result in seri‐ous or fatal injury to the user.
- In case of thunderstorms: Do not continue work.

Transporting

WARNING

The lawn scarifier may tip over or move during transport. This may result in injury to people and damage to property.
- Switch the lawn scarifier off.
- Wait until the roller is no longer turning.
- Remove the battery.
- Place the lawn scarifier on a level surface.
- Set the transport position.
- Carry the lawn scarifier over obstacles (e.g. steps, kerbs).
- Secure the lawn scarifier with lashing straps, belts or a net so that it cannot tip over and move.

Battery

WARNING

The battery is not protected against all ambient conditions. The battery may be damaged if it is exposed to certain ambient conditions, and damage to property may occur.
Never transport a damaged battery.
The battery may turn over or shift during transport. This may result in injury to people and damage to property.
- Pack the battery in packaging in such a way that it cannot move.
- Secure the packaging so that it cannot move.

Storing

WARNING

Children cannot recognise or evaluate the dangers posed by the lawn scarifier. There is a risk of serious injury to children.
- Remove the battery.
- Keep the lawn scarifier out of reach of children.
Moisture may cause corrosion to the electric contacts on the lawn scarifier and metal com‐ponents. This may result in damage to the lawn scarifier.
- Remove the battery.
- Keep the lawn scarifier clean and dry.

Battery

WARNING

Children cannot recognise or evaluate the dangers posed by batteries. There is a risk of serious injury to children.
Keep the battery out of reach of children.
The battery is not protected against all ambient conditions. If exposed to certain ambient conditions, the battery may be irreparably damaged.
- Keep the battery clean and dry.
- Store the battery in an enclosed space.
- Store the battery separately from the lawn scarifier.
- If the battery is stored in the charger: dis‐connect the mains plug and store the battery at a charge state between 40% and 60% (2 LEDs illuminated green).
- Do not store the battery outside the specific temperature limits, 20.4.

Cleaning, Maintenance and Repair

WARNING

If the battery is inserted during cleaning, maintenance or repair, the lawn scarifier may unintentionally be activated. This may result in serious injury to people and damage to property.
- Wait until the roller is no longer turning.
- Remove the battery.
Abrasive cleaning agents, using a water jet for cleaning or sharp objects may result in damage to the lawn scarifier, rollers and battery. If the lawn scarifier, rollers and battery are not cleaned correctly, components may no longer operate correctly and safety devices may be disabled. This may result in serious injury to people.
Clean the lawn scarifier, rollers and battery as described in this instruction manual.
If the lawn scarifier, rollers or battery are not maintained or repaired correctly, components may no longer operate correctly and safety devices may be disabled. This may result in serious or fatal injury to people.
- Do not maintain or repair the lawn scarifier or battery yourself.
- If the lawn scarifier or battery need to be maintained or repaired: consult a STIHL specialist dealer.

Preparing the Lawn Scarifier for Operation

Maintain the rollers as described in this instruction manual.

The blades and spring tines may move during roller cleaning, maintenance or repair. The user can cut themselves on sharp cutting edges and be injured or fingers can get caught between moving tines and stationary parts of the machine and be crushed.
- Wear work gloves made from resistant material.
- Work carefully.

Preparing the Lawn Scarifier for Operation

The following steps must be performed before commencing work:

Remove packaging material and transport locks.
Make sure that the following components are in safe condition:
- Lawn scarifier, 4.6.
- Rollers, 4.6.2.
- Battery, 4.6.3.
Check the battery, 11.3.
- Fully charge the battery, 6.1.
- Clean the lawn scarifier, 16.
- Check the rollers, 11.2.
- Attach the handlebar, 7.1.
- Ensure that there is no roller in the transport compartment, 7.2.
- Fold up and adjust the handlebar, 8.1.
- If material removed from the lawn is to be collected in the grass catcher box: attach the grass catcher box, 7.3.2.
- If material removed from the lawn is to be ejected to the rear: detach the grass catcher box, 7.3.3.
- Set the working depth, 12.2.
- Check the controls, 11.1.
- If the steps cannot be performed: do not use the lawn scarifier and consult a STIHL specialist dealer.

Charging the Battery, LEDs

The charging time depends on various influencing factors such as the temperature of the battery and the ambient temperature. For optimum performance, note the recommended temperature ranges, 20.5. The actual charging time may 0478-670-9909-D differ from the specified charging time. Please refer to www.stihl.com/charging-times .

Charge the battery as described in the instruction manual for STIHL AL 101, 301, 500 battery chargers.

State of Charge

Press the button (1).
The LEDs (5) glow green for about 5 seconds and indicate the state of charge.
If the LED on the right flashes green: Charge the battery.

LEDs on the Battery

The LEDs can indicate the battery charge state or faults.The LEDs can illuminate or flash green or red.
If the LEDs light up or flash green, the charge state is being indicated.
If the LEDs light up or flash red:remedy the faults, 19.1.
There is a fault in the lawn scarifier or in the battery.

Assembling the Lawn Scarifier

Attaching the Handlebar

Switch the lawn scarifier off and remove the battery.
Place the lawn scarifier on a level surface.
Open both quick-release levers (1) and fold the lower handlebar section (2) backwards, hold it at the desired height and close both quick-release levers (1) again.
Slide the cable guide (3) onto the screw (4).
Align centre handlebar section (5) on the lower handlebar (2) so the bores align.
Push the screws (4, 6) through the holes from the outside, insert a washer (7) on the inside and fix them in place with the turning handles (8).
Slide the cable guide (9) onto the screw (10).
Align the upper handlebar section (11) with the handlebar centre sections (5) so that the holes are aligned.
Push the screws (10, 12) through the holes from the outside, place a washer (13) onto each on the inside and fix in place with the rotary handles (14).
Press the cable (15) into the cable guides (3, 9).
Adjust the handlebar to the desired height using the quick-clamping device (1) 8.1.
The handlebar must not be dismantled again.

Removing the Combing Roller from the Transport Compartment Before Use for the First Time

Switch the lawn scarifier off and remove the battery.
Place the lawn scarifier on a level surface.
- Open quick-clamping devices (1) and fold down the handlebar to the rear.
Hold the lawn scarifier at the lower transport handle and upend.
Remove the cable ties.
Remove the combing roller from the transport compartment and keep it in a safe place.

Assembling, Attaching and Detaching the Grass Catcher Box

Assembling the Grass Catcher Box

Pull the fabric (1) over the frame (2) so that the base plate is at the bottom and the handle (3) is on the outside of the fabric.
Press plastic profiles (4) onto the frame. The plastic profiles engage with a click.

Attaching the Grass Catcher Box

Switch the lawn scarifier off.

Open discharge flap (1) and hold it open.
Take hold of grass catcher box (3) by han‐dle (2) and suspend shaft (5) in mount (4).
Set down discharge flap (1) on grass catcher box (3).

Detaching the Grass Catcher Box

Switch the lawn scarifier off.
Place the lawn scarifier on a level surface.
Open the discharge flap and hold it open.
Remove the grass catcher box upwards by the handle.
Close the discharge flap.

Adjusting the Lawn Scarifier for the User

Folding Up and Adjusting the Handlebar

Switch the lawn scarifier off and remove the battery.
Place the lawn scarifier on a level surface.
Fold up upper handlebar (1).
Tighten the rotary handles (2).
Hold the upper handlebar (1) and unfold it together with the centre handlebar section (3).
Tighten the rotary handles (4).
Open quick-clamping devices (6).
Fold up handlebar (5) fully.
Align the handlebar (5) in a comfortable work‐ing position and lock in place with the quick-release levers (6).

Folding the Handlebar

Switch the lawn scarifier off and remove the battery.
Place the lawn scarifier on a level surface.
Open the quick-clamping devices.
Fold down the handlebar forwards, ensuring that the cable is not trapped.

Removing and Fitting the Battery

Fitting the Battery

Place the lawn scarifier on a level surface.
Open flap (1) as far as the stop and hold.
Push battery (2) into battery compartment (3) as far as it will go.
Battery (2) engages with a click and is locked in place.
Close flap (1).

Removing the Battery

Place the lawn scarifier on a level surface.
Open flap (1) as far as the stop and hold.
Press locking lever (4).
The battery (2) is released.
Remove battery (2).
Close flap (1).

Switching the Lawn Scarifier On and Off

Switching the Lawn Scarifier On

Place the lawn scarifier on a level surface.
Do not tilt the lawn scarifier when switching on.
Press locking button (1) with the right hand and hold.
Pull control bar (2) with the left hand fully in the direction of the handlebar and hold so the thumb encloses the handlebar.
The roller turns.
Release locking button (1).
Hold the handlebar and control bar (2) with the right hand so that the thumb encloses the handlebar.

Switching the Lawn Scarifier Off

Release the control bar.
Wait until the roller is no longer turning.
If the roller continues to turn: remove the battery and consult a STIHL specialist dealer. The lawn scarifier is defective.

Checking the Lawn Scarifier and Battery

Checking the Controls
Locking button and control bar

Remove the battery.
Press the locking button and release it again.
Pull the control bar fully in the direction of the handlebar and release it again.
If the locking button or the control bar is stiff or does not spring back into the initial position: do not use the lawn scarifier and consult a STIHL specialist dealer.
The locking button or the control bar is defective.

Switching the lawn scarifier on

Fit the battery.
Press the locking button with the right hand and hold.
Pull the control bar with the left hand fully in the direction of the handlebar and hold so the thumb encloses the handlebar.
The roller turns.
If 3 LEDs flash red: remove the battery and consult a STIHL specialist dealer.
There is a fault in the lawn scarifier.
If the roller is not turning: Switch off the lawn scarifier, remove the battery and consult a STIHL specialist dealer.
The lawn scarifier is defective.
Release the locking button and control bar. The roller stops turning after a short time.
If the roller continues to turn: remove the battery and consult a STIHL specialist dealer. The lawn scarifier is defective.

Checking the Rollers

Switch the lawn scarifier off and remove the battery.
Place the lawn scarifier on a level surface.
Upend the lawn scarifier, 16.1. Scarifying roller
Check the length of the blades.
The wear limit of the blades is marked.
if the minimum length is fallen below: replace the roller, 17.2.

Combing roller

If the tines are crooked or bent: Consult a STIHL specialist dealer or replace the roller, 17.2.
If anything is unclear: consult a STIHL specialist dealer.

Testing the Battery

Press button on battery.
The LEDs glow or flash.
If the LEDs do not glow or flash: Do not use the battery and contact your STIHL servicing dealer.
There is a malfunction in the battery.

Working with the Lawn Scarifier

Holding and Guiding the Lawn Scarifier

Hold the handlebar with both hands so that the thumbs enclose the handlebar.

Setting the Working Depth and Transport Position
The working depth can be infinitely adjusted.

Setting the working depth

Move rotary wheel (1) into the desired posi‐tion.
The roller raises and lowers.

Setting the transport position

Turn rotary wheel (1) anti-clockwise into the highest position.
The roller raises and no longer touches the ground.

Preparing the Lawn
The shorter the lawn is mown, the better the scarifying results. The ideal grass height is between 2 and 3 cm.

Remove objects from the work area.
Mark stationary obstacles (e.g. roots and tree trunks).
If the grass is higher than 3 cm: mow the lawn.

Scarifying and Combing

Scarifying with the scarifying roller
Scarifying involves scratching the turf to remove weeds, moss, old clippings and lawn thatch.

Adjust the working depth.
Place the roller in the highest position before starting.
Slowly lower the roller so it is just scratching the ground. The ideal scarifying depth is between 2 and 3 mm.
The grassroots are not damaged.
Push the lawn scarifier forwards slowly and in a controlled manner.
Avoid staying stationary in one place for any duration.

Combing with the combing roller
Combing involves carefully removing lawn thatch and excess moss previously loosened by scarify‐ing from the lawn.
In addition, it counteracts soil compaction and the resulting lack of oxygen in the soil.

Adjust the working depth.
Place the roller in the highest position before starting.
Slowly lower the roller until the spring tines touch the ground.
Push the lawn scarifier forwards slowly and in a controlled manner.
Avoid staying stationary in one place for any duration.
For optimum performance, note the recommended temperature ranges, 20.5.

Emptying the Grass Catcher Box

Remove grass catcher box (1) upwards by the handle.
Empty grass catcher box (1).

After Finishing Work

Switch the lawn scarifier off and remove the battery.
Place the lawn scarifier on a level surface.
If the lawn scarifier is wet: allow the lawn scarifier to dry.
If the battery is wet or damp: allow it to dry, 20.5.
clean the lawn scarifier.

Caring for the lawn after scarifying

Remove all scarified material from the lawn.
Fertilise the lawn and reseed any bare patches.
Water the lawn thoroughly.
Caring for the lawn after combing
Remove all plant trimmings from the lawn.
Water the lawn thoroughly.

Transporting

Transporting the Lawn Scarifier

Switch the lawn scarifier off and remove the battery.
Place the lawn scarifier on a level surface.
Detach the grass catcher box.
Set the transport position.
Pushing the lawn scarifier
Push the lawn scarifier forwards slowly and in a controlled manner.

Carrying the lawn scarifier

If the lawn scarifier is being carried with the handlebar unfolded:
Wear work gloves made from resistant material.
One person holds the lawn scarifier by lower carrying handle (1) using both hands and another person holds handlebar (2) using both hands.
The lawn scarifier must be lifted and carried by two people.
If the lawn scarifier is being carried with the handlebar folded in:
Fold in the handlebar.
Wear work gloves made from resistant material.
One person holds the lawn scarifier at the front by lower carrying handle (1) using both hands and another person by the mounts of lower handlebar (2) using both hands.
The lawn scarifier must be lifted and carried by two people.
If the lawn scarifier is being carried by one person:
Fold in the handlebar.
Hold the lawn scarifier by upper carrying handle (1).
Lift and carry the lawn scarifier.

Transporting the lawn scarifier in a vehicle

Secure the lawn scarifier so it does not tip over and cannot move.

Transporting the Battery

Switch the lawn scarifier off and remove the battery.
Make sure that the battery is in safe condition.
Pack the battery in such a way that it cannot move in the packaging.
Secure the packaging so it cannot move.

The battery is subject to the requirements for transporting hazardous goods. The battery is classed as a UN 3480 (lithium-ion battery) and has been tested in accordance with the UN Manual of Tests and Criteria, Part III, subsection 38.3.
Please refer to www.stihl.com/safety-data-sheets for transport instructions.

Storing

Storing the Lawn Scarifier

Switch the lawn scarifier off and remove the battery.
Place the lawn scarifier on a level surface.
Set the transport position.
Store the lawn scarifier in accordance with the following conditions:
- The lawn scarifier is out of reach of children.
- The grass catcher box is emptied.
- The lawn scarifier is clean and dry.
- The lawn scarifier has cooled down.

Storing the Battery
STIHL recommends storing the battery at a charge state between 40% and 60% (2 LEDs illuminated green).

Store the battery in accordance with the following conditions:
- The battery is out of reach of children.
- The battery is clean and dry.
- The battery is in an enclosed space.
- The battery is separate from the lawn scarifier.
- If the battery is stored in the charger: dis‐connect the mains plug and store the battery at a charge state between 40% and 60% (2 LEDs illuminated green).
- The battery is not stored outside the specified temperature limits, 20.4.

NOTICE

If the battery is not stored as described in this instruction manual, it may become deeply discharged and irreparably damaged.
- Charge a discharged battery before storing it. STIHL recommends storing the battery at a charge state between 40% and 60% (2 LEDs illuminated green).
- Store the battery separately from the lawn scarifier.

Cleaning

Upending the Lawn Scarifier

Switch the lawn scarifier off and remove the battery.
Place the lawn scarifier on a level surface.
Set the transport position.
Detach the grass catcher box.
Place the handlebar in the lowest position, 8.1.
Press the handlebar downwards with the left hand and hold.
Hold the lawn scarifier by the lower transport handle with your right hand and upend.

Cleaning the Lawn Scarifier

Switch the lawn scarifier off and remove the battery.
Place the lawn scarifier on a level surface.
Clean the lawn scarifier with a damp cloth.
Clean the discharge chute with a soft brush or a damp cloth.
Remove any foreign bodies from the battery compartment and clean the battery compartment with a damp cloth.
Clean the electrical contacts in the battery compartment with a paintbrush or a soft brush.
Clean the ventilation slots with a paintbrush.
Upend the lawn scarifier.
Clean the area around the roller and the roller with a soft brush or a damp cloth.

Cleaning the Battery

Clean the battery with a damp cloth.

Maintenance

Maintenance Intervals
Maintenance intervals are dependent on the ambient conditions and the working conditions. STIHL recommends the following maintenance intervals:

After every fifth change of rollers

Have the roller fastening screw replaced by a STIHL specialist dealer.

Annual

Have the lawn scarifier serviced by a STIHL specialist dealer.

The current addresses of the specialist dealers can be found under the respective STIHL country representative at www.stihl.com .

Removing and Attaching the Roller

Detaching the Roller

Switch the lawn scarifier off and remove the battery.

Upend the lawn scarifier.
Unscrew screws (1).
Remove installed roller (3) together with holder (2).

Attaching the Roller

Switch the lawn scarifier off and remove the battery.
Upend the lawn scarifier.
Insert scarifying roller (2) or combing roller (4) together with holder (3) into the mount.
Install screws (1) and tighten firmly.

Repairing

Repairing the Lawn Scarifier and Battery

The user should not repair the lawn scarifier, bat‐tery or rollers themselves.

If the lawn scarifier, battery or rollers are dam‐aged:do not use the lawn scarifier, battery or rollers and consult a STIHL specialist dealer.
If warning signs are illegible or damaged:have the warning signs replaced by a STIHL specialist dealer.

Troubleshooting

Remedying Lawn Scarifier or Battery Faults

Fault	LEDs on the battery	Cause	Remedy
The lawn scari‐ fier does not start when switched on.	1 LED flashes green.
The battery charge state is too low.	► Charge the battery.
	1 LED illumina‐ tes red.	The battery is too warm or too cold.	► Remove

the battery.

► Allow the battery to cool down or warm up.

| 3 LEDs flash red.| There is a fault in the lawn scarifier.| ► Remove the battery.

► Clean the electrical contacts in the bat‐ tery compartment.

► Fit the battery.

► Switching the lawn scarifier on.

► If 3 LEDs still flash red: do not use the lawn scarifier and consult a STIHL spe‐ cialist dealer.

| 3 LEDs illumi‐ nate red.| The lawn scarifier is too warm.| ► Remove the battery.

► Allow the lawn scarifier to cool down.

| 4 LEDs flash red.| There is a fault in the battery.| ► Remove the battery and fit it again.

► Switching the lawn scarifier on.

► If 4 LEDs still flash red: do not use the battery and consult a STIHL specialist dealer.

| | The electrical connec‐ tion between the lawn scarifier and battery has been interrupted.| ► Remove the battery.

► Clean the electrical contacts in the bat‐ tery compartment.

► Fit the battery.

| | The lawn scarifier or battery are damp.| ► Remove the battery.

► clean the lawn scarifier.

► Allow the lawn scarifier or battery to dry, 20.5.

| | The resistance at the roller is too great.| ► Reduce the working depth.

► Check the grass height and mow if necessary.

► Allow the lawn scarifier to cool down.

► clean the lawn scarifier.

► Do not switch the lawn scarifier on too frequently within a short time.

► Reduce the working depth.

► Scarify or comb lower grass.

| | The roller is blocked.| ► Remove the battery.

► clean the lawn scarifier.

| | There is an electrical fault.| ► Remove the battery and fit it again.

► Switching the lawn scarifier on.

The lawn scari‐ fier vibrates excessively during operation.| | The bolts at the roller holder are loose.| ►   Tighten the bolts.
Fault| LEDs on the battery| Cause| Remedy
---|---|---|---
| | The roller is not cor‐ rectly balanced.| ►   consult a STIHL specialist dealer.
The lawn scari‐ fier operating time is too short.| | The battery is not fully charged.| ►   Fully charge the battery.
| | The battery service life has been excee‐ ded.| ►   Replace the battery.
| | The area around the roller is blocked.| ►   clean the lawn scarifier.
| | The roller is blunt or worn.| ►   Check the rollers.
| | The resistance at the roller is too great.| ►   Reduce the working depth.

► Scarify or comb lower grass.

The battery gets stuck when fitting it into the battery compartment.| | The guides or electri‐ cal contacts in the battery compartment are dirty.| ► clean the lawn scarifier.
Charging fails to start after fitting the battery into the charger.| 1 LED illumina‐ tes red.| The battery is too warm or too cold.| ► Leave the battery inserted in the char‐ ger.

Charging starts automatically as soon as the permissible temperature range is reached.

Specifications

STIHL Lawn Scarifier RLA 240.0

Permissible battery: STIHL AK
Weight without battery: 14 kg
Weight (m) with scarifying roller, grass catcher box and battery AK 30 S: 16 kg
Maximum grass catcher box capacity: 50 l
Working width: 34 cm
Speed: 3500 rpm
Working depth: Stepless, adjustment range 15 mm

For information on run time, see www.stihl.com/battery- life .

Rollers

Scarifying roller

16 fixed blades Combing roller
11×2 moving spring-tines

STIHL battery AK

Battery technology: Lithium ion
Voltage: 36 V
Capacity in Ah: See rating plate
Energy content in Wh: See rating plate
Weight in kg: See rating plate

Temperature Limits

WARNING

The battery is not protected against all ambient conditions. If exposed to certain ambient conditions, the battery may catch fire or explode. This may result in serious injury to people and damage to property.
- Do not charge or use the battery below – 20°C or above +50°C.
- Do not store the battery below -20°C or above +70°C.
- Do not use the lawn scarifier below 0 °C or above +50 °C.
- Do not store the lawn scarifier below 0 °C or above +70 °C.

Recommended Temperature Ranges

For optimum performance of the lawn scarifier and battery, observe the following temperature ranges:

Lawn scarifier:
Use: 0 °C to + 40 °C
Storage: 0 °C to + 50 °C
Battery:
Charging: +5°C to +40°C
Use: -10°C to +40°C
Storage: -20°C to +50°C

If the battery is charged, used or stored outside the recommended temperature ranges, performance may be reduced.
If the battery is wet or damp, allow it to dry for at least 48 hours at above +15°C and below +50°C and at less than 70% humidity. Higher humidity may increase the drying time.

Sound Values and Vibration Values

The K value for the sound pressure level is
3 dB(A). The K value for the sound power level is 3,2 dB(A). The K value for the vibration value (specified vibration characteristic value according to EN 12096) is 2,4 m/s².

Sound pressure level LpA measured according to EN IEC 62841-4-7: 75 dB(A)
Guaranteed sound power level LWAd measured in accordance with 2000/14/EC / S.I. 2001/1701: 92 dB(A)
Vibration value (specified vibration characteristic according to EN 12096) ahw measured according to EN IEC 62841-4-7, handlebar: 4,8 m/s²

The specified sound and vibration values were measured according to a standardized test procedure and can be used to compare electrical appliances. The actual sound and vibration values that occur may deviate from the indicated values, depending on the type of application. The specified sound and vibration values can be used for an initial assessment of the sound and vibration exposure. The actual sound and vibration load must be assessed. Times during which the electrical appliance is switched off, along with times during which it is switched on but running without load, can also be taken into consideration.

For information on compliance with Employers’ Vibration Directive 2002/44/EC and S.I. 2005/1093, see www.stihl.com/vib .

Normative Information
STIHL Tirol GmbH
Hans Peter Stihl-Strasse 5
6336 Langkampfen
Austria
confirms that the machine complies with the regulations in implementation of the following standards IEC 62841‑1 and IEC 62841‑4‑7.

REACH
REACH is an EC regulation and stands for the Registration, Evaluation, Authorisation and Restriction of Chemical substances.
For information on compliance with the REACH regulation see www.stihl.com/reach.

Spare Parts and Accessories

These symbols indicate original STIHL spare parts and original STIHL accessories.

STIHL recommends the use of original STIHL spare parts and accessories.
Despite ongoing market observation, STIHL is unable to judge the reliability, safety and suitabil‐ity of other manufacturers’ spare parts and accessories; accordingly, STIHL cannot warrant for the use of those parts.
Original STIHL spare parts and original STIHL accessories are available from STIHL dealers.

Essential Spare Parts

Scarifying roller: 6291 700 3501
Combing roller: 6291 710 5200

Disposal

Disposing of the Lawn Scarifier and Battery

Information on disposal is available from your local authority or from a STIHL specialist dealer.
Improper disposal may be harmful to health and pollute the environment.

Take STIHL products including packaging to a suitable collection point for recycling in accordance with local regulations.
Do not dispose of the product with domestic waste.

EC Declaration of Conformity

STIHL Lawn Scarifier RLA 240.0

STIHL Tirol GmbH
Hans Peter Stihl-Strasse 5
6336 Langkampfen
Austria
declares under our sole responsibility that

design: lawn scarifier
manufacturer’s brand: STIHL
type: RLA 240.0
Power: 900 W
serial number: 6291

complies with the relevant provisions of Directives 2000/14/EC, 2006/42/EC, 2011/65/EU and 2014/30/EU and has been developed and manufactured in accordance with the versions of the following standards valid on the date of manufacture: EN IEC 62841-4-7, EN 62841-1, EN 55014-1 and EN 55014-2.
The measured and guaranteed sound power lev‐els were determined in accordance with Directive 2000/14/EC, Appendix V.

Measured sound power level: 89,2 dB(A)
Guaranteed sound power level: 92 dB(A)

The technical documents are stored at STIHL Tirol GmbH.
The year of manufacture and machine number are indicated on the lawn scarifier.
Langkampfen, 06.05.2024
STIHL Tirol GmbH

Matthias Fleischer, Head of Product Development

p.p. V
Sven Zimmermann, Head of Quality Department

UKCA Declaration of Conformity

STIHL Lawn Scarifier RLA 240.0

STIHL Tirol GmbH
Hans Peter Stihl-Strasse 5
6336 Langkampfen
Austria
declares under our sole responsibility that

design: lawn scarifier
manufacturer’s brand: STIHL
type: RLA 240.0
Power: 900 W
serial number: 6291

complies with the relevant provisions of the UK regulations Noise Emission in the Environment by Equipment for use Outdoors Regulations 2001, Supply of Machinery (Safety) Regulations 2008, Electromagnetic Compatibility Regulations 2016 and The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012 and has been developed and manufactured in accordance with the versions of the following standards valid on the date of manufacture: EN IEC 62841-4-7, EN 62841-1, EN 55014-1 and EN 55014-2.
The measured and guaranteed sound power levels were determined in accordance with the UK regulation Noise Emission in the Environment by Equipment for use Outdoors Regulations 2001, Schedule 8.

Measured sound power level: 89,2 dB(A)
Guaranteed sound power level: 92 dB(A)

The technical documents are stored at STIHL Tirol GmbH.
The year of manufacture and machine number are indicated on the lawn scarifier.
Langkampfen, 06.05.2024
STIHL Tirol GmbH

Matthias Fleischer, Head of Product Development

Sven Zimmermann, Head of Quality Department

Addresses

www.stihl.com

General and Product-Specific Safety Instructions

Introduction
This section reproduces the general and product-specific safety instructions prescribed and pre-formulated in the product standard.
The safety information for avoiding electric shock given under “Electrical Safety” is not applicable to STIHL battery products, with the exception of point c).

WARNING

Read all safety warnings, instructions, illustrations and specifications provided with this lawn scarifier. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury. Save all warnings and instructions for future reference.

Work Area Safety

Keep work area clean and well lit. Cluttered or dark areas invite accidents.
Do not operate lawn scarifiers in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Lawn scarifiers create sparks which may ignite the dust or fumes.
Keep children and bystanders away while operating a lawn scarifier. Distractions can cause you to lose control.

Electrical Safety

Lawn scarifier plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) lawn scarifiers. Unmodified plugs and matching outlets will reduce risk of electric shock.
Avoid body contact with earthed or grounded surfaces, such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
Do not expose lawn scarifiers to rain or wet conditions. Water entering a lawn scarifier will increase the risk of electric shock.
Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the lawn scarifier. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.
When operating a lawn scarifier outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.
If operating a lawn scarifier in a damp loca‐tion is unavoidable, use a residual current device (RCD) protected supply. Use of an RCD reduces the risk of electric shock.

Personal Safety

Stay alert, watch what you are doing and use common sense when operating a lawn scarifier. Do not use a lawn scarifier while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating lawn scarifiers may result in seri‐ous personal injury.
Use personal protective equipment. Always wear eye protection. Protective equipment such as a dust mask, non-skid safety shoes, hard hat or hearing protection used for appropriate conditions will reduce personal injuries.
Prevent unintentional starting. Ensure the switch is in the off-position before connecting to power source and/or battery pack, picking up or carrying the lawn scarifier. Carrying lawn scarifiers with your finger on the switch or energising lawn scarifiers that have the switch on invites accidents.
Remove any adjusting key or wrench before turning the lawn scarifier on. A wrench or a key left attached to a rotating part of the lawn scarifier may result in personal injury.
Do not overreach. Keep proper footing and balance at all times. This enables better control of the lawn scarifier in unexpected situations.
Dress properly. Do not wear loose clothing or jewellery. Keep your hair and clothing away from moving parts. Loose clothes, jewellery or long hair can be caught in moving parts.
If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. Use of dust collection can reduce dust-related hazards.
Do not let familiarity gained from frequent use of lawn scarifiers allow you to become complacent and ignore lawn scarifier safety principles. A careless action can cause severe injury within a fraction of a second.

Lawn Scarifier Use and Care

Do not force the lawn scarifier. Use the correct lawn scarifier for your application. The correct lawn scarifier will do the job better and safer at the rate for which it was designed.
Do not use the lawn scarifier if the switch does not turn it on and off. Any lawn scarifier that cannot be controlled with the switch is dangerous and must be repaired.
Disconnect the plug from the power source and/or remove the battery pack, if detachable, from the lawn scarifier before making any adjustments, changing accessories or storing lawn scarifiers. Such preventive safety measures reduce the risk of starting the lawn scarifier accidentally.
Store idle lawn scarifiers out of the reach of children and do not allow persons unfamiliar with the lawn scarifier or these instructions to operate the lawn scarifier. Lawn scarifiers are dangerous in the hands of untrained users.
Maintain lawn scarifiers and accessories. Check for misalignment or binding of moving parts, breakage of parts and any other condi‐tion that may affect the lawn scarifier’s operation. If damaged, have the lawn scarifier repaired before use. Many accidents are caused by poorly maintained lawn scarifiers.
Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.
Use the lawn scarifier, accessories and tool bits etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of the lawn scarifier for operations different from those intended could result in a hazard‐ous situation.
Keep handles and grasping surfaces dry, clean and free from oil and grease. Slippery handles and grasping surfaces do not allow for safe handling and control of the lawn scarifier in unexpected situations.

General and Product-Specific Safety Instructions

Battery Lawn Scarifier Use and Care

Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.
Use lawn scarifiers only with specifically designed battery packs. Use of any other battery packs may create a risk of injury and fire.
When battery pack is not in use, keep it away from other metal objects, like paper clips, coins, keys, nails, screws or other small metal objects, that can make a connection from one terminal to another. Shorting the battery terminals together may cause burns or a fire.
Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the battery may cause irritation or burns.
Do not use a battery pack or lawn scarifier that is damaged or modified. Damaged or modified batteries may exhibit unpredictable behaviour resulting in fire, explosion or risk of injury.
Do not expose a battery pack or lawn scarifier to fire or excessive temperature. Exposure to fire or temperature above 130 °C may cause explosion.
Follow all charging instructions and do not charge the battery pack or lawn scarifier outside the temperature range specified in the instructions. Charging improperly or at temperatures outside the specified range may damage the battery and increase the risk of fire.

Service

Have your lawn scarifier serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the lawn scarifier is maintained.
Never service damaged battery packs. Service of battery packs should only be performed by the manufacturer or authorised service providers.

Safety Instructions for Battery Lawn Scarifiers

Do not use the lawn scarifier in bad weather conditions, especially when there is a risk of lightning. This decreases the risk of being struck by lightning.
Thoroughly inspect the area for wildlife where the lawn scarifier is to be used. Wildlife may be injured by the lawn scarifier during operation.
Thoroughly inspect the area where the lawn scarifier is to be used and remove all stones, sticks, wires, bones, and other foreign objects. Thrown objects can cause personal injury.
Before using the lawn scarifier, always visually inspect to see that the tines and the tines assembly are not worn or damaged. Worn or damaged parts increase the risk of injury.
Check the catcher frequently for wear or deterioration. A worn or damaged catcher may increase the risk of personal injury.
Keep guards in place. Guards must be in working order and be properly mounted. A guard that is loose, damaged, or is not functioning correctly may result in personal injury. Keep all cooling air inlets clear of debris. Blocked air inlets and debris may result in overheating or risk of fire.
While operating the lawn scarifier, always wear non-slip and protective footwear. Do not operate the lawn scarifier when barefoot or wearing open sandals. This reduces the chance of injury to the feet from contact with the moving tines.
While operating the lawn scarifier, always wear long trousers. Exposed skin increases the likelihood of injury from thrown objects. Do not operate the lawn scarifier in wet grass. Walk, never run. This reduces the risk of slipping and falling which may result in personal injury.
Do not operate the lawn scarifier on excessively steep slopes. This reduces the risk of loss of control, slipping and falling which may result in personal injury.
When working on slopes, always be sure of your footing, always work across the face of slopes, never up or down and exercise extreme caution when changing direction. This reduces the risk of loss of control, slipping and falling which may result in personal injury.
Use extreme caution when reversing or pulling the lawn scarifier towards you. Always be aware of your surroundings. This reduces the risk of tripping during operation.
Hold the lawn scarifier by insulated gripping surfaces only, because the tines may contact hidden wiring. Tines contacting a “live” wire may make exposed metal parts of the lawn scarifier “live” and could give the operator an electric shock.
Do not touch tines and other hazardous moving parts while they are still in motion. This reduces the risk of injury from moving parts.
When clearing jammed material or cleaning the lawn scarifier, make sure all power switches are off and the battery pack is disconnected. Unexpected operation of the lawn scarifier may result in serious personal injury.