STIHL HTA 66 Battery Pole Chainsaw Instruction Manual

: June 10, 2024
: STIHL

Table of Contents

STIHL HTA 66 Battery Pole Chainsaw
Introduction
Overview
10
Rating plate with the machine number
Safety Precautions
Charging the Battery, LEDs
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

STIHL HTA 66 Battery Pole Chainsaw

STIHL-HTA-66-Battery-Pole-Chainsaw-product

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 con- ditions.

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 sus- tainable 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.

Contents
0458-191-9621-C

Dr. Nikolas Stihl 29

IMPORTANT! READ BEFORE USING AND KEEP IN A SAFE PLACE FOR REFERENCE.
2 Guide to Using this Manual
2.1 Applicable documents
The local safety regulations apply. In addition to this User Manual, you should
also read, understand and retain the following documents: User manual of the carrying system you are
using User Manual for STIHL AR battery User Manual for “AP belt bag with connect-
ing cable” Safety notices and precautions for
STIHL AP battery User Manual for STIHL AL 101, 301, 301-4,
500 chargers Safety information for STIHL batteries and
products with built-in battery: www.stihl.com/safety-data-sheets
For further information on STIHL connected, compatible products and FAQs, please visit www.connect.stihl.com or available from a STIHL servicing dealer.
The Bluetooth® word mark and logos are regis- tered trademarks owned by Bluetooth SIG, Inc. These word marks and logos are used by STIHL under license.
Batteries with are equipped with a Bluetooth® radio interface. Local operating restrictions (in aircraft or hospitals, for example) must be observed.
2.2 Symbols used with warnings in the text
WARNING
This symbol indicates dangers that can cause serious injuries or death. The measures indicated can avoid serious injuries or death.
NOTICE
This symbol indicates dangers that can cause damage to property. The measures indicated can avoid damage to property.
30

2 Guide to Using this Manual
Symbols in Text
This symbol refers to a chapter in this instruction manual.

Overview

STIHL HTA 66 Pole Pruner and Battery
1

2

5 6 7 8

4 3

11

9

10

22 19
21 20 #

18 17

12 13
14 15
16

0000097131_004

1 Chain scabbard The chain scabbard protects against contact with the saw chain.
2 Handle hose For holding and controlling the pole pruner.
3 Shaft The shaft connects all components.
4 Oil tank cap The oil tank cap closes the oil tank.
5 Battery compartment The battery compartment holds the battery.
6 Control handle For holding and controlling the pole pruner.
7 Ergo lever The Ergo lever holds the release slide in posi- tion when the trigger is released.
8 Release slide The release slide releases the trigger.
0458-191-9621-C

3 Overview
9 Carrying ring The carrying ring is for attaching the carrying system.
10 Trigger Switches the pole pruner on and off.
11 Locking lever The locking lever holds the battery in the bat- tery compartment.
12 Chain sprocket The chain sprocket drives the saw chain.
13 Tensioning screw The tensioning screw is used to adjust the chain tension.
14 Guide bar The guide bar supports and guides the saw chain.
15 Saw chain The saw chain cuts the wood.
16 Limit stop Holds the pole pruner against the wood while cutting.
17 Chain sprocket cover Covers the chain sprocket and secures the guide bar to the pole pruner.
18 Nut The nut secures the chain sprocket cover to the pole pruner.
19 Battery Supplies power to the pole pruner.
20 LEDs The LEDs indicate the state of charge of the battery and any faults.
21 Pushbutton The pushbutton activates the LEDs on the battery. The pushbutton activates and deacti- vates Bluetooth® radio interface (if available).
22 “BLUETOOTH®” LED (only for batteries with )
The LED indicates the activation and deacti- vation of the Bluetooth® interface. # Rating plate with the machine number
0458-191-9621-C

English
3.2 STIHL HTA 86 Pole Pruner and Battery
1

2

4

5 6

7

8

3

9

11

10

23 20
22 21 #

12
13 14

19 18

15
17 16

0000097132_004

1 Chain scabbard The chain scabbard protects against contact with the saw chain.
2 Handle hose For holding and controlling the pole pruner.
3 Shaft The shaft connects all components.
4 Oil tank cap The oil tank cap closes the oil tank.
5 Battery compartment The battery compartment holds the battery.
6 Control handle For holding and controlling the pole pruner.
7 Ergo lever The Ergo lever holds the release slide in posi- tion when the trigger is released.
8 Release slide The release slide releases the trigger.
9 Carrying ring The carrying ring is for attaching the carrying system.
10 Trigger Switches the pole pruner on and off.
31

English
11 Locking lever The locking lever holds the battery in the bat- tery compartment.
12 Clamp nut Serves to adjust the length of shaft.
13 Chain sprocket The chain sprocket drives the saw chain.
14 Tensioning screw The tensioning screw is used to adjust the chain tension.
15 Saw chain The saw chain cuts the wood.
16 Guide bar The guide bar supports and guides the saw chain.
17 Limit stop Holds the pole pruner against the wood while cutting.
18 Chain sprocket cover Covers the chain sprocket and secures the guide bar to the pole pruner.
19 Nut The nut secures the chain sprocket cover to the pole pruner.
20 Battery Supplies power to the pole pruner.
21 LEDs The LEDs indicate the state of charge of the battery and any faults.
22 Pushbutton The pushbutton activates the LEDs on the battery. The pushbutton activates and deacti- vates Bluetooth® radio interface (if available).
23 “BLUETOOTH®” LED (only for batteries with
) The LED indicates the activation and deacti- vation of the Bluetooth® interface.

Rating plate with the machine number

3.3 Symbols
Meanings of the symbols that may be on the pole pruner and battery:
The clamp nut is unscrewed in this posi- tion. The shaft can be extended.
The clamp nut is locked in this position. The shaft cannot be extended.
This symbol marks the oil tank for saw chain oil.

4 Safety Precautions This symbol shows the direction of rotation of the saw chain. Rotate in this direction to increase the saw chain tension 1 LED lights up red. The battery is too warm or too cold. 4 LEDs flash red. There is a fault in the battery. The battery is equipped with a Bluetooth® radio interface and can be paired with the STIHL connected app. The information next to the symbol indi- cates the energy content of the battery according to the cell manufacturer’s specifi- cation. The energy content available in operation is lower. Do not dispose of the product with domes- tic waste.
4 Safety Precautions
4.1 Warning symbols
Meanings of warning symbols on the pole pruner or battery:
Observe safety warnings and take the necessary precautions.
Read and understand the User Manual and keep it in a safe place for refer- ence. Wear safety glasses and a hard hat.
Wear safety boots.
Wear work gloves.
Maintain a safe distance.
Remove the battery during work inter- ruptions, transport, storage, mainte- nance or repair.

32

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Safety Precautions

Protect the battery against heat and fire.
Do not immerse the battery in liquids.
4.2 Intended Use
The STIHL HTA 66 and HTA 86 pole pruners are designed for limbing and pruning the branches of tall trees.
The pole pruner must not be used for felling operations.
The pole pruner may be used in the rain.
The pole pruner is powered by a STIHL AP bat- tery or a STIHL AR battery.
The battery with in combination with the STIHL connected app enables customization and the transfer of information to the battery using Bluetooth® technology.
WARNING
Batteries not explicitly approved for the pole pruner by STIHL may cause a fire or explo- sion. Persons may be seriously or fatally injured, and property may be damaged. Use the pole pruner with a STIHL AP bat- tery or a STIHL AR battery.
Using the pole pruner or the battery for purpo- ses for which they were not designed may result in serious or fatal injuries and damage to property. Use the pole pruner as described in this User Manual. Use the battery as described in this User Manual, the STIHL AR battery User Man- ual, the STIHL connected app and at www.connect.stihl.com.
The Operator
WARNING: Users without adequate training or instruction cannot recognize or assess the risks involved in using the pole pruner and battery. The user or other persons may sustain serious or fatal injuries. Read, understand and save the instruction manual.

If you pass the pole pruner or battery on to another person: Always give them the instruction manual.
Make sure the user meets the following requirements: The user must be rested. The user must be in good physical con- dition and mental health to operate and work with the pole pruner and battery. If the user’s physical, sensory or mental ability is restricted, he or she may work only under the supervision of or as instructed by a responsible person. The user is able to recognize and assess the risks involved in using the pole pruner and battery. The user must be of legal age or is being trained in a trade under supervi- sion in accordance with national rules and regulations. The user has received instruction from a STIHL servicing dealer or other experi- enced user before working with the pole pruner for the first time. The user must not be under the influ- ence of alcohol, medication or drugs.
If you have any queries: Contact a STIHL servicing dealer for assistance.
Clothing and equipment
WARNING: Long hair may be pulled into the pole pruner during operation. This may result in serious injury to the user. Tie up and confine long hair above your shoulders.
Objects can be thrown at high speed during operation. 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 commer- cially with the corresponding mark- ing.
Falling objects can cause head injuries. wear a hard hat.
Dust can be whipped up during operation. Whipped up dust can damage the respiratory passages and cause allergic reactions. If dust is generated: Wear a dust respirator mask.

0458-191-9621-C

33

4 Safety Precautions

Unsuitable clothing can snag on wood, brush or the pole pruner. Not wearing suitable cloth- ing may result in serious injury. Wear close-fitting clothing. Remove scarves and jewelry.
The user may cut himself or herself on wood while working. The user may come into con- tact with the saw chain during cleaning or servicing. This may result in injury to the user. Wear work gloves made from resist- ant 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.

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 ambi-
ent conditions. If the battery is exposed to cer- tain 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, 20.5. Do not immerse the battery in liq- uids.

4.5 Work Area and Surroundings
4.5.1 Pole Pruner
WARNING: Bystanders, children and animals cannot rec- ognize or assess the dangers of the pole pru- ner or flying debris. This may result in serious injury to bystanders, children and animals and damage to property. Do not allow bystanders, children or animals within 15 meters of the work area.
Maintain a clearance of 15 meters from objects.
Never leave the pole pruner unattended. Make sure that children cannot play with
the pole pruner. Electrical components of the pole pruner may
produce sparks. Sparks may cause fires and explosions in highly flammable or explosive environments. Persons may be seriously or fatally injured and property may be damaged. Do not work in a highly flammable or explo-
sive environment.
4.5.2 Battery
WARNING
Bystanders, children and animals cannot rec- ognize or assess the dangers of the battery. Bystanders, children and animals may be seri- ously injured.

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.
4.6 Safe Condition
4.6.1 Pole Pruner The pole pruner is in a safe condition if the fol- lowing points are observed: The pole pruner is not damaged. The pole pruner is in a clean condition. The controls function properly and have not
been modified. The chain lubrication is operating properly. Wear marks on the chain sprocket are not
deeper than 0.5 mm. A combination of guide bar and saw chain rec-
ommended in this User Manual is mounted. The guide bar and saw chain are properly
mounted. The saw chain is properly tensioned. Only original STIHL accessories designed for
this pole pruner model are fitted. The accessories are correctly attached. The oil tank cap is closed.
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. Work only with an undamaged pole pruner.

34

0458-191-9621-C

4 Safety Precautions
If the pole pruner is dirty: Clean the pole pruner.
Do not modify the pole pruner. Exception: Mounting a combination of guide bar and saw chain recommended in this User Man- ual.
If the controls do not function properly: Do not use the pole pruner.
Only fit original STIHL accessories designed for this pole pruner model.
Mount the guide bar and saw chain as described in this User Manual.
Attach accessories as described in this User Manual or in the User Manual for the accessories.
Never insert objects in the openings of the pole pruner.
Close the oil tank cap. Replace worn or damaged labels. If you have any doubts, be sure to consult a
STIHL dealer.
4.6.2 Guide Bar The guide bar is in a safe condition if the follow- ing points are observed: Guide bar is not damaged. Guide bar is not deformed. The minimum groove depth is maintained,
20.3. Bar rails are free from burrs. Bar groove is not pinched or splayed.
WARNING
If the guide bar is not in a safe condition, it can no longer support and guide the saw chain properly. The rotating saw chain can jump off the guide bar. This can result in serious or fatal injuries. Work only with an undamaged guide bar. If the groove depth is less than the mini- mum depth: Mount a new guide bar. Deburr the guide bar every week. If you have any queries: Contact your STIHL servicing dealer.
4.6.3 Saw Chain The saw chain is in a safe condition if the follow- ing points are observed: Chain is not damaged. Chain is properly sharpened. The service marks on the cutters are still visi-
ble.
WARNING
If components do not comply with safety requirements, they will no longer function properly and safety devices may be rendered inoperative. This can result in serious or fatal injuries. Work only with an undamaged saw chain. Sharpen the chain properly. If you have any queries: Contact your
STIHL servicing dealer for assistance.
4.6.4 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 bat- tery to dry, 20.6. Never attempt to modify the battery. Never insert objects in the battery’s open- ings. 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 extin- guish the battery with a fire extinguisher or water.

0458-191-9621-C

35

4.7 Working
4.7.1 Sawing
WARNING
Always work within calling distance of others so that you can summon help in an emer- gency. Make sure that people are within earshot outside the working area.
In certain situations, the user may no longer be able to concentrate on their work. The user may lose control of the pole pruner, stumble or fall and be seriously injured. Keep calm and plan your work. If light and visibility are poor: Do not use the pole pruner. Use the pole pruner without assistance. Watch out for obstacles. Work standing on the ground and keep your balance. If you have to work at a height: Use a mobile elevating work platform or secure scaffolding. If you start feeling fatigue: Take a break.
The moving saw chain can cut the user. This may result in serious injury to the user. Do not touch the rotating saw chain. If the saw chain is blocked by an object: Switch off the pole pruner and remove the battery. before clearing the jam.
The moving saw chain warms up and expands. If the saw chain is not sufficiently lubricated and retensioned, the saw chain may jump off the guide bar or it may break. This may result in serious injury to people and damage to property. Use saw chain lubricant. Check the saw chain tension regularly while working. If saw chain tension is insufficient: Tension the saw chain.
If the behavior of the pole pruner changes dur- ing operation or feels unusual, it may no lon- ger be in a safe condition. This may result in serious injury to people and damage to prop- erty. Stop working, remove the battery and con- sult a STIHL servicing dealer.
Vibrations may occur while using the pole pru- ner. Wear gloves.

4 Safety Precautions
If the moving saw chain hits a hard object, sparks may occur. Sparks can cause fires in a flammable environment. Persons may be seri- ously or fatally injured and property may be damaged. Do not use the chain saw in a flammable environment.
The saw chain runs on for a short period after you release the trigger. People may be cut by the moving saw chain. They may cause seri- ous injury to persons. Hold the pole pruner firmly with both hands and wait until the saw chain comes to a standstill.
In an emergency, the user may start to panic and forget to take off the carrying system. This may result in serious injury to the user. Practice taking off the carrying system.
WARNING
B 2

0000-GXX-8685-A0

1 A

If you saw wood which is under tension, the guide bar may become jammed. The user may

lose control of the pole pruner and be seri-

ously injured.

First make a relief cut (1) on the compres-

sion side (A), then a separating cut (2), off-

set in the direction of the trunk, on the ten-

sion side (B).

DANGER: Working near live electric cables may result in accidental contact with the saw chain and damage the cables. This may result in serious or fatal injury to the user.
Maintain a clearance of 15 meters from live cables.

Take breaks. If signs of a circulatory disturbance occur:
Consult a doctor.
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4 Safety Precautions 4.7.2 Limbing
max 60°
WARNING
During delimbing the sawn-off branch may fall to the ground. This may result in serious injury to the user. Do not stand under the branch which you are sawing. Maintain an angle of no more than 60° to the horizontal.
4.8 Reactive Forces
4.8.1 Kickback

0000-GXX-4757-A2 Always hold your pole pruner firmly with both hands.
Always keep your body out of the plane of the cutting attachment.
Use the working techniques described in this instruction manual.
Do not cut with the upper quadrant of the bar nose.
Always cut with a properly sharpened and tensioned saw chain.
Use a reduced kickback saw chain. Use a guide bar with a narrow radius nose. Always cut with the chain running at full
speed.
4.8.2 Pull-In

0000-GXX-1348-A0

Kickback can be caused for the following rea- sons: The rotating saw chain in the upper quadrant
of the bar nose makes contact with a hard object and is suddenly braked. The rotating saw chain is pinched at the bar nose.
WARNING

0000-GXX-4802-A0

The pole pruner is pulled away from the operator when the bottom of the bar is used for cutting.

WARNING: If the rotating chain makes contact with a hard object and is suddenly pinched, the pole pru- ner is abruptly jerked away from the operator. The user can lose control of the pole pruner and be seriously injured. Always hold your pole pruner firmly with both hands. Use the working techniques described in this instruction manual. Keep the guide bar straight in the cut. Apply the stop properly. Always cut with the chain running at full speed.
4.8.3 Pushback

0000-GXX-4803-A0

0000-GXX-1349-A0

If kickback occurs, the pole pruner can be thrown upwards and backwards. The user can

lose control of the pole pruner and be seri-

ously injured.

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37

The pole pruner is pushed back toward the oper- ator when the top of the bar is used for cutting.

WARNING: If the rotating chain makes contact with a hard object and is suddenly pinched, the pole pru- ner is abruptly pushed back toward the opera- tor. The user can lose control of the pole pru- ner and be seriously injured. Always hold your pole pruner firmly with both hands. Use the working techniques described in this instruction manual. Keep the guide bar straight in the cut. Always cut with the chain running at full speed.
4.9 Transporting
4.9.1 Pole Pruner

WARNING: The pole pruner may turn over or shift during transport. Persons may be injured or property damaged. Remove the battery.
Fit the chain scabbard so that it completely covers the guide bar.
Secure the pole pruner with lashing straps or a net to prevent it from turning over and moving.

Battery
WARNING: The battery is not protected against all ambi- ent 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 trans- port. 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.

4 Safety Precautions

4.10 Storing
4.10.1 Pole Pruner
WARNING
Children are not aware of and cannot assess the dangers of the pole pruner and can be seriously injured. Remove the battery.
Fit the chain scabbard so that it completely covers the guide bar.
Store the pole pruner out of the reach of children.
Dampness may corrode the electrical contacts on the pole pruner and metal components. This can damage the pole pruner. Remove the battery.
Store the pole pruner in a clean and dry condition.
4.10.2 Battery
WARNING
Children are not aware of and cannot assess the dangers of the battery Children may be seriously injured. Store the battery out of the reach of chil- dren.
The battery is not protected against all ambi- ent conditions. If the battery is exposed to cer- tain ambient conditions, the battery may be irreparably damaged. Store the battery in a clean and dry condi- tion. Store the battery in an enclosed space. Store the battery separately from the pole pruner. If the battery is stored in the charger, dis- connect the mains plug and store the bat- tery at a state of charge between 40% and 60% (2 lit green LEDs). Do not store the battery outside of the specified temperature limits, 20.5.
4.11 Cleaning, Maintenance and Repair
WARNING
The pole pruner may start unintentionally if the battery is left in place during cleaning, mainte-

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5 Preparing Pole Pruner for Operation

nance or repair operations. This may result in serious injury to people and damage to prop- erty.
Remove the battery.
Aggressive cleaning agents, cleaning with a jet of water or pointed objects may damage the pole pruner, guide bar, saw chain and bat- tery. If the pole pruner, guide bar, saw chain or battery are not cleaned correctly, components may no longer function properly or safety devi- ces may be rendered inoperative. They may cause serious injury to persons. Clean the pole pruner, guide bar, saw chain and battery as described in this User Man- ual.
If the pole pruner, guide bar, saw chain or bat- tery are not serviced or repaired correctly, components may no longer function properly or safety devices may be rendered inopera- tive. This may result in serous or fatal injury to people. Do not attempt to service or repair the pole pruner or battery. If the pole pruner or the battery require servicing or repairs: Contact your STIHL dealer for assistance. Service or repair the guide bar and saw chain as described in this User Manual.
The user may be cut by the sharp cutters while cleaning or servicing the saw chain. This may result in injury to the user. Wear work gloves made from resist- ant material.

Fully charge battery as described in the User Manual for the STIHL AL 101, 301, 301-4, 500 chargers.
Clean the pole pruner, 16.1. Assemble the pole pruner (HTA 86), 8.1. Mount the guide bar and saw chain, 8.2.1. Tension the saw chain, 8.3. Fill up with saw chain oil, 8.4. Adjust the shaft length (HTA 86), 12.1. Fit and adjust the carrying system, 12.2. Check the controls, 11.4. Check the chain lubrication, 11.5. If you cannot carry out this work: Do not use
your pole pruner and contact your STIHL dealer for assistance.
5.2 Connecting a battery with Blue- tooth® radio interface with the STIHL connected app
Activate the Bluetooth® radio interface on the mobile device.
Activating the Bluetooth® radio interface on the battery, 7.1.
Download the STIHL connected app to the mobile device from the App Store and create an account.
Open and sign in to the STIHL connected app. Add the battery in the STIHL connected app
and follow the instructions on the screen.
For contacts and other information, please visit https://support.stihl.com or see the STIHL con- nected app.
The STIHL connected app is available interna- tionally.

Charging the Battery, LEDs

5 Preparing Pole Pruner for Operation
5.1 Preparing the Pole Pruner for Operation
The following steps must be performed before commencing work: Ensure that the following components are in a
safe condition: Pole Pruner, 4.6.1. Guide bar, 4.6.2. Saw chain, 4.6.3. Battery, 4.6.4. Check the battery, 11.6.

6.1 Charging the Battery
The charging time depends on various factors, e.g. the battery temperature or the ambient tem- perature. For optimum performance, observe the recommended temperature ranges, 20.6. The actual charging time may vary from the charging time indicated. The charging time is indicated at www.stihl.com/charging- times. Recharge the battery as described in the User
Manual for the STIHL AL 101, 301, 301-4, 500 chargers.

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39

7 Activating and Deactivating Bluetooth® Radio Interface

6.2 Displaying the charge level
80-100% 60-80% 40-60% 20-40%
0-20%

8 Assembling the Pole Pru- ner
8.1 Assembling the Pole Pruner (HTA 86)
Switch off the pole pruner and remove the bat- tery.

0000079877_002 0000097889_001

1
Press the button (1). The LEDs light up green for about 5 seconds and indicate the state of charge.
If the LED on the right flashes green: Charge the battery.
6.3 LEDs on Battery
The LEDs can show the state of charge or mal- functions. The LEDs can glow or flash green or red.
The state of charge is indicated when the LEDs glow or flash green. If the LEDs glow or flash red: Troubleshooting,
19. There is a malfunction in the pole pruner or battery.
7 Activating and Deactivating Bluetooth® Radio Interface
7.1 Activating the Bluetooth® Radio Interface
If the battery has a Bluetooth® radio interface: Press and hold the pushbutton until the
“BLUETOOTH®” LED next to the symbol lights up blue for approximately 3 seconds. The Bluetooth® radio interface on the battery is activated.
7.2 Deactivating the Bluetooth® Radio Interface
If the battery has a Bluetooth® radio interface: Press and hold the pushbutton until the
“BLUETOOTH®” LED next to the symbol lights up blue six times. The Bluetooth® radio interface on the battery is deactivated.

3

2

1

90°

4

5

6

90°

7

Align the shaft (1) as shown in the figure. Push the shaft (1) into the clamping piece (3)
in such a way that the recesses (5 and 6) are in line. Push the shaft (1) into the clamping piece (3) as far as it will go in such a way that the clamping piece (3) is over the handle hose (7). Take care not to damage the cable (2). Fully tighten the screw (4).

The shaft need not be removed again.

8.2 Mounting and Removing the Bar and Chain

8.2.1

Mounting the Guide Bar and Saw Chain

The guide bar and saw chain combinations that can be used with the chain sprocket are listed in the specifications, 21.1. Switch off the pole pruner and remove the bat-
tery.

0000097133_001

2 1

4

3

Rotate the nut (1) counterclockwise until the chain sprocket cover (2) can be removed.
Remove the chain sprocket cover (2). Turn the tensioning screw (3) counterclock-
wise until the tensioner slide (4) butts against the left end of the housing.

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8 Assembling the Pole Pruner

Fit the saw chain in the guide bar groove so that the arrows on the tie straps on the top of the bar point in the direction of rotation.

5

7

6

8

0000-GXX-2954-A0

English
8.2.2 Removing the Guide Bar and Saw Chain
Switch off the pole pruner and remove the bat- tery.
Rotate the nut counterclockwise until the chain sprocket cover can be removed.
Remove the chain sprocket cover. Turn the tensioning screw counterclockwise as
far as it will go. The saw chain is now slack. Remove the guide bar and saw chain.
8.3 Tensioning the Saw Chain
The saw chain expands or contracts during cut- ting work. The saw chain tension changes as a result. Check the saw chain tension regularly during operation and readjust if necessary. Switch off the pole pruner and remove the bat-
tery.

0000097171_001

Fit the guide bar and saw chain on the pole pruner and check the following points: The drive links of the saw chain are seated in teeth of the chain sprocket (7). The collar stud (5) is located in the slot in the tail of the guide bar (6). The peg of tensioner slide (4) engages the hole (8) in guide bar (6).
The guide bar (6) may be fitted either way round. The logo on the guide bar (6) may also be upside down.
6 3
Turn the tensioning screw (3) clockwise until the saw chain fits snugly against the guide bar. Make sure the drive links engage the guide bar groove. The guide bar (6) and saw chain fit snugly against the pole pruner.
Fit the chain sprocket cover (2) so that it is flush with the pole pruner.
Fit the nut (1) and tighten it down firmly.

0000097172_001

1 2
a
Loosen the nut (1). Hold the guide bar nose up and turn the ten-
sioning screw (2) clockwise until the following points apply: The chain sag a’ in the center of the guide bar is 1 – 2 mm. The saw chain can still be pulled easily along the guide bar with two fingers. Hold the guide bar nose up and tighten down the nut (1) firmly. If the chain saga’ in the center of the guide
bar is not 1 – 2 mm: Readjust the saw chain tension.
8.4 Filling Up with Saw Chain Oil
The saw chain oil lubricates and cools the rotat- ing chain. Switch off the pole pruner and remove the bat-
tery. Place the pole pruner on a level surface so
that the oil tank cap faces up. Use a damp cloth to clean the oil tank cap and
the area around it.

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9 Removing and Fitting the Battery

Swing the grip on the oil tank cap to the verti- cal position.
Turn the oil tank cap counterclockwise as far as it will go.
Remove the oil tank cap. Fill up with saw chain oil, taking care not to
spill any oil and not to overfill the tank. If the grip on the oil tank cap has dropped into
the closed position: Raise the grip until it is vertical.

0000-GXX-2930-A0

Press the oil tank cap down and rotate it clock- wise as far as it will go.
Press the oil tank cap down and rotate it coun- terclockwise until mark (1) points to mark (2).
Now try again to close the oil tank. If the oil tank still cannot be closed properly:
Do not use your pole pruner and contact a STIHL dealer for assistance. The pole pruner is not in a safe condition.
9 Removing and Fitting the Battery
9.1 Inserting the Battery
1

1 1

0000-GXX-2931-A0

2

3

Place the oil tank cap in the filler opening so that mark (1) lines up with mark (2).
Press the oil tank cap down and rotate it clock- wise as far as it will go. The oil tank cap snaps into place. The mark (1) points to mark (3).
Check to see if the oil tank cap can be pulled upwards and off.
If the oil tank cap cannot be pulled upwards and off: Fold down the grip on the oil tank cap. The oil tank is closed.

If the oil tank cap can be pulled upwards and off, perform the following steps: Place the oil tank cap in the filler opening in
any position.

1

2

0000-GXX-3135-A0

2
Insert the battery (1) up to the limit stop into the battery compartment (2). The battery (1) engages with a click and is now locked.
9.2 Removing the Battery
Place the pole pruner on a level surface. Keep one hand in front of the battery compart-
ment so that the battery (2) cannot fall out.

0000097076_002

1

2

Press both locking levers (1). The battery (2) is released and can be removed.

10 Switching Pole Pruning On and Off

10.1 Switching on the Pole Pruner
Hold the pole pruner with one hand by the control handle wrap your thumb around the control handle.

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11 Checking Pole Pruner and Battery Hold the pole pruner firmly with your other
hand by the handle hose – wrap your thumb around the handle hose.
1
3
a

English

0000097176_001

0000097269_001

2
Push the release slide (1) in the direction of the saw chain with your thumb and hold it there.
Press the trigger (2) with your index finger and keep depressed. The motor is accelerated and the saw chain rotates. The release slide can be released (1).
If the ergo lever (3) is pressed, the trigger switch (2) remains unlocked. This means the trigger can be released and depressed again without having to push the release slide in the direction of the saw chain once more.
If the trigger (2) and the Ergo lever (3) are released, the trigger (3) is locked. The release slide (1) must be pushed towards the saw chain again and held to unlock the trigger (2).
10.2 Switching the Pole Pruner Off
Release the trigger and the Ergo lever. Wait until the saw chain comes to a complete
standstill after about 1 second. If the saw chain continues to run after about 1
second: Remove the battery and contact your STIHL dealer for assistance. The pole pruner has a malfunction.
11 Checking Pole Pruner and Battery
11.1 Checking the Chain Sprocket
Switch off the pole pruner and remove the bat- tery.
Remove the chain sprocket cover. Remove the guide bar and saw chain.

Use a STIHL gauge to check the wear marks on the chain sprocket.
If the wear marks are deeper than a = 0.5 mm: Do not use your pole pruner and contact your STIHL dealer for assistance. The chain sprocket must be replaced.
11.2 Checking the Guide Bar
Switch off the pole pruner and remove the bat- tery.
Remove the saw chain and guide bar.
Measure the depth of the guide bar with the scale on a STIHL filing gauge.
Install a new guide bar if one of the following points applies: The guide bar is damaged. The measured guide bar groove depth is less than specified minimum depth, 20.3. The guide bar groove is pinched or splayed.
If you have any doubts, be sure to consult a STIHL dealer.
11.3 Checking the Saw Chain
Switch off the pole pruner and remove the bat- tery.
1 2

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English
Measure the height of the depth limiters (1) with a STIHL filing gauge (2). The STIHL filing gauge must match the pitch of the saw chain.
If a depth gauge (1) projects from the filing gauge (2): Lower the depth gauge (1) with a file, 17.2.
1

2

3

0000-GXX-1372-A0

4
Make sure the service marks (1 to 4) on the cutters are visible.
If one of the service marks is not visible on a cutter: Do not use your saw chain and contact your STIHL dealer for assistance.
Use a STIHL filing gauge to check that the fil- ing angle is 30° on all cutters. The STIHL filing gauge must match the pitch of the saw chain.
If the filing angle of 30° has not been main- tained: Resharpen the saw chain.
If you have any doubts, be sure to consult a STIHL dealer.
11.4 Checking the controls
Release slide, Ergo lever and trigger Remove the battery. Try squeezing the trigger switch without acti-
vating the release slide. If the trigger can be pulled: Do not use your
pole pruner and contact your STIHL dealer for assistance. The release slide is faulty. Push the release slide with your thumb in the direction of the saw chain and hold it there. Press and hold Ergo lever. Press the trigger. The release slide can be released. Release the trigger and Ergo lever. If the release slide, trigger or the Ergo lever is stiff or does not spring back to the idle posi- tion: Do not use the pole pruner and contact your STIHL dealer for assistance. The release slide, trigger or the Ergo lever is defective.
Switching on the Pole Pruner Insert battery. Push the release slide towards the saw chain
and hold in place.

12 Using the Pole Pruner
Press and hold the trigger. The saw chain runs.
If 3 LEDs flash red: Remove the battery and consult a STIHL dealer. There is a malfunction in the pole pruner.
Release the trigger. The saw chain stops running after about 1 second.
If the saw chain continues to run after about 1 second: Remove the battery and contact your STIHL dealer for assistance. The pole pruner has a malfunction.
11.5 Checking Chain Lubrication
Fit the battery. Hold the guide bar over a light surface. Switch on the pole pruner.
Chain oil is thrown off the chain and is visible on the light surface. Chain lubrication is oper- ating properly. If no chain oil can be seen: Fill up with chain oil. Check chain lubrication again. If chain oil is still not visible on the light sur-
face: Do not use your pole pruner and con- tact your STIHL servicing dealer for assis- tance. Chain lubrication is defective.
11.6 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.
12 Using the Pole Pruner
12.1 Adjusting the shaft length (HTA 86)
The shaft can be adjusted to different lengths to suit the application as well as the user’s height and reach. Switch off the pole pruner and remove the bat-
tery.

max 45°

2 1

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12 Using the Pole Pruner
Maintain an angle of no more than 45° to the horizontal.
Turn the clamp nut (1) a half-rotation towards .
Adjust the shaft (2) to the required length. Turn the clamp nut (1) in direction as far as it
will go. Check that the shaft (2) cannot be shifted any
more ant that the clamp nut (1) is twisted tight in direction as far as it will go.
The shaft length is properly adjusted if the shaft (2) cannot be pushed in or pulled out and the clamping unit is screwed tight, as far as it will go, in direction of .
12.2 Fitting and Adjusting the Shoul- der Strap

English
Hold the pole pruner with one hand by the control handle wrap your thumb around the control handle.
Hold the pole pruner firmly with your other hand by the handle hose – wrap your thumb around the handle hose.
12.4 Limbing
Cross-cut

0000097178_001

1
2
Put on the shoulder strap (1). Adjust the shoulder strap (1) so that the cara-
biner (2) is about a hand’s width below your right hip. Other approved carrying systems are listed in this User Manual, 22.1.
12.3 Holding and Controlling the Pole Pruner
1
2

0000-GXX-2990-A0

1
Position the limit stop (1) against the branch. The saw chain can be positioned precisely using the gauge bar.
With the chain running at full speed, press the guide bar downward against the limb with a leveraging movement.
Cut through the limb with the bottom of the guide bar.
2
1

0000085007_003

0000-GXX-4765-A1

0000-GXX-7807-A1

Connect the carrying ring (2) to the carabi- ner (1).

If the limb is under tension: Make the relieving cut (1) into the compression side and then per- form the bucking cut (2) from the tension side.

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English Cutting thick branches
a

0000-GXX-4766-A0

1

2

Perform a relieving cut (2) at cutting point (2) at a distance a = 20 cm from the final cross cut (1).
Perform a relieving cut and then a cross cut at the desired cutting point (1).
For optimum performance, observe the recom- mended temperature ranges, 20.6.
13 After Finishing Work
13.1 After Finishing Work
Switch off the pole pruner and remove the bat- tery.
If the pole pruner is wet: Allow the pole pruner to dry.
If the battery is moist or wet: Allow the battery to dry, 20.6.
Clean the pole pruner. Clean the guide bar and saw chain. Loosen the nut on the chain sprocket cover. Back off the tensioning screw 2 turns counter-
clockwise. The saw chain is now slack. Tighten down the nut on the chain sprocket cover. Push the chain scabbard over the guide bar so that it completely covers the guide bar. Clean the battery.
14 Transporting
14.1 Transporting the Pole Pruner
Switch off the pole pruner and remove the bat- tery.
Fit the chain scabbard so that it completely covers the guide bar.
Push in shaft completely (HTA 86).
Carrying the pole pruner Carry the pole pruner in one hand by the shaft
with the guide bar behind you.
Transporting the pole pruner in the car Secure the pole pruner to prevent turnover
and movement.

13 After Finishing Work
14.2 Transporting the Battery
Switch off the pole pruner and remove the bat- tery.
Check that the battery is in a safe condition. Pack the battery so that it cannot move in the
packaging. Secure the packaging so that it cannot move.
The battery is subject to the Carriage of Danger- ous Goods regulations. The battery is classified as UN 3480 (lithium ion batteries) and has been tested pursuant to UN Manual Tests and Criteria Part III, Subsection 38.3.
The transport regulations can be found at www.stihl.com/safety-data-sheets.
15 Storing
15.1 Storing the Pole Pruner
Switch off the pole pruner and remove the bat- tery.
Fit the chain scabbard so that it completely covers the guide bar.
Check the following points when storing the pole pruner: The pole pruner is out of the reach of chil- dren. The pole pruner is clean and dry.
If you store the pole pruner for more than 30 days: Remove the guide bar and saw chain.
15.2 Storing the Battery
STIHL recommends keeping the battery in a charging state between 40% and 60 % (2 green LEDs lit). The battery should be stored in such a way
that the following conditions are fulfilled: The battery is out of the reach of children. The battery is clean and dry. The battery is in an enclosed space. Battery is separated from the pole pruner. If the battery is stored in the charger, dis-
connect the mains plug and store the bat- tery at a state of charge between 40% and 60% (2 lit green LEDs). Do not store the battery outside of the specified temperature limits, 20.5.

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16 Cleaning
NOTICE
If the battery is not stored as described in this User Manual, the battery may become deeply discharged and irreparably damaged. Charge a discharged battery before storing it. STIHL recommends keeping the battery state of charge between 40% and 60% (2 lit green LEDs). Store the battery separately from the pole pruner.
16 Cleaning
16.1 Cleaning the Pole Pruner
Switch off the pole pruner and remove the bat- tery.
Clean the pole pruner with a damp cloth or STIHL resin solvent.
Clean vents with a paintbrush. Remove foreign objects from the battery com-
partment and clean the battery compartment with a damp cloth. Clean the electrical contacts in the battery compartment with a paintbrush or soft brush. Remove the chain sprocket cover. Clean the area around the chain sprocket with a damp cloth or STIHL resin solvent. Fit the chain sprocket cover.
16.2 Cleaning the Guide Bar and Saw Chain
Switch off the pole pruner and remove the bat- tery.
Remove the guide bar and saw chain.
1 3

0000097134_001

2

3

Clean the oil port (1), oil inlet hole (2) and bar groove (3) with a soft brush or STIHL resin solvent.
Clean the saw chain with a soft brush or STIHL resin solvent.
Mount the guide bar and saw chain.
16.3 Cleaning the Battery
Clean the battery with a damp cloth.

English
17 Maintenance
17.1 Deburring the Guide Bar
A burr can build up on the outer edge of the guide bar. Remove burr with a flat file or a STIHL guide
bar dressing tool. If you have any queries: Contact your STIHL
servicing dealer.
17.2 Sharpening the Saw Chain
Correctly sharpening saw chains requires a lot of practice. STIHL files, STIHL filing aids, STIHL sharpeners and the brochure “Sharpening STIHL Saw Chains” help you achieve the right results. To obtain the brochure visit http://www.stihl.com/ sharpening-brochure. STIHL recommends you have saw chains resharpened by a STIHL servicing dealer.
WARNING The chain’s cutters are very sharp. There is a
risk of cut injuries. Wear work gloves made of durable mate-
rial.
File each cutter with a round file so that the following points are observed: Round file matches the chain pitch. File from the inside to the outside of the cut- ter. Hold the file at right angle to the guide bar. Maintain a filing angle of 30°.

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English

18 Repairing

File down the depth gauges with a flat file so that they are level with the STIHL filing gauge and parallel to the service mark. The STIHL fil- ing gauge must match the chain pitch.
If you have any queries: Contact your STIHL servicing dealer for assistance.

contact your STIHL servicing dealer for assis- tance. If the battery has a malfunction or is damaged: Replace the battery.

18 Repairing

18.1 Repairing the Pole Pruner and Battery

The pole pruner, guide bar, saw chain and bat- tery cannot be repaired by the user. If the pole pruner, guide bar or saw chain are
damaged: Do not use your pole pruner and
19 Troubleshooting

19.1 Troubleshooting the pole pruner or battery

Fault

LEDs on the Cause battery

Remedy

Pole pruner does 1 LED flashing State of charge of the Charge battery as described in the User

not run when green.

battery is too low.

Manual for chargers STIHL AL 101, 301,

switched on.

301-4, 500.

1 LED emits The battery is too

red light.

warm or too cold.

Remove the battery. Allow the battery to cool down or warm
up.

3 LEDs flash red.

There is a malfunction Remove the battery. in the pole pruner. Clean electrical contacts in the battery
compartment. Insert battery. Switch on the pole pruner. If 3 LEDs continue flashing red: Do not
use the pole pruner and contact a STIHL specialist dealer.

3 LEDs light The pole pruner is too Remove the battery.

up red.

hot.

Allow the pole pruner to cool down.

4 LEDs flash red.

There is a fault in the battery.

Remove battery and reinsert it. Switch on the pole pruner. If 4 LEDs continue to flash red: Do not
use the battery; contact a STIHL authori- zed dealer.

No electrical contact between pole pruner and battery.

Remove the battery. Clean electrical contacts in the battery
compartment. Insert battery.

Pole pruner or battery Allow pole pruner or battery to dry,

damp.

20.6.

Pole pruner cuts 3 LEDs light out during opera- up red. tion.

The pole pruner is too Remove the battery.

hot.

Allow the pole pruner to cool down.

There is an electrical Remove battery and reinsert it.

fault.

Switch on the pole pruner.

Runtime of pole pruner is too short.

The battery is not fully Fully charge battery as described in the

charged.

User Manual for the STIHL AL 101, 301,

301-4, 500 chargers.

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20 Specifications

English

Fault

LEDs on the battery

Smell of smoke or burning in the cutting area.

STIHL connected app is unable to find the battery with .

Cause

Remedy

The battery service Replace battery. life has been excee- ded.

The saw chain has not been correctly sharpened.

Sharpen chain as specified.

Insufficient saw chain oil in the oil tank. The chain lubrication system is supplying insufficient saw chain oil.

Fill up with saw chain oil. Do not use your pole pruner and contact your STIHL servicing dealer for assistance.

The saw chain is over-tensioned.

Tension the saw chain as specified.

The pole pruner is not Have correct use explained, then practice. being used correctly. Bluetooth® radio inter- Activate Bluetooth® radio interface on the face on the battery or battery or mobile device. mobile device is deac- tivated.

Excessive distance between battery and mobile device.

Reduce distance, 20.4. If the battery still cannot be found with
the STIHL connected app: Contact a STIHL authorized dealer for assistance.

19.2 Product Support and Assis- tance on Use
Product support and assistance on use are avail- able from STIHL servicing dealers.
For contacts and other information, please visit https://support.stihl.com or www.stihl.com.
20 Specifications
20.1 STIHL HTA 66, HTA 86 Pole Pruners
HTA 66 Permitted batteries:
STIHL AP STIHL AR Weight without battery: 3.3 kg Max. oil tank capacity: 105 cc (0.105 l) Degree of electrical protection: IPX4 (protec- tion against splash water from any direction)

For runtime, see www.stihl.com/battery-life.
20.2 Chain Sprockets
The following chain sprockets may be used: 6-tooth for 1/4″ P
20.3 Minimum groove depth of guide bars
The mininum groove depth depends on the pitch of the guide bar. 1/4″ P 4 mm
20.4 STIHL AP battery
Battery technology: lithium-ion Voltage: 36 V Capacity in Ah: see rating label Energy content in Wh: see rating label Weight in kg: see rating label Bluetooth® radio interface (only for batteries
with ):

HTA 86
Permitted batteries: STIHL AP STIHL AR
Weight without battery: 4.6 kg Max. oil tank capacity: 105 cc (0.105 l) Degree of electrical protection: IPX4 (protec-
tion against splash water from any direction)

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Data connection: Bluetooth® 5.1. The mobile appliance must be compatible with Bluetooth® Low Energy 5.0 and support Generic Access Profile (GAP).
Frequency band: ISM band 2.4 GHz Maximum RF power transmitted: 1 mW Signal range: approx. 10 m. The signal
strength depends on the ambient conditions and the mobile terminal. Signal range can vary greatly depending on local conditions, including the receiver. The range may be perceptibly reduced inside enclosed rooms and through metal barriers (such as walls, shelves or cases). Mobile appliance operating system require- ments: Android or iOS (current version or higher)
20.5 Temperature limits
WARNING
The battery is not protected against all ambi- ent conditions. If the battery is exposed to cer- tain environmental conditions, it may catch fire or explode. This may result in serious injury to people and damage to property. Do not charge the battery below -20°C or above 50°C. Do not use the pole pruner or battery below -20°C or above 50°C. Do not use the pole pruner or battery below -20°C or above 50°C.
20.6 Recommended temperature ranges
For optimum performance of the pole pruner and battery, observe the following temperature ranges: Charging: 5°C to 40°C