BOSCH ARM33 Electric Lawn Mower Instruction Manual

: October 30, 2023
: Bosch

Table of Contents

Operation
Maintenance
Technical Data
Noise/Vibration Information
Mounting and Operation
Troubleshooting
Documents / Resources

Original instructions

ARM
33 | 34 | 34 R | 1300-34 R | 3400 | 36 | 37 | 37 R | 1400-37 R | 3700

Safety Notes
Warning! Read these instructions carefully, and be familiar with the controls and the proper use of the machine. Please keep the instructions safe for later use! Explanation of symbols on the machine
General hazard safety alert.
****Read the instruction manual.
Pay attention that bystanders are not injured by foreign objects thrown from the machine.
Warning: Keep a safe distance from the machine when operating.
Caution: Do not touch rotating blades. Sharp blade(s). Beware of severing toes or fingers.
Not applicable.
Switch off and remove plug from mains before adjusting, cleaning or if the cable is entangled and before leaving the garden product unattended for any period. Keep the supply flexible cord away from the cutting blades.
Wait until all machine components have completely stopped before touching them. The blades continue to rotate after the machine is switched off, a rotating blade can cause injury.
Do not use the machine in the rain or leave it outdoors when it is raining.
Beware electric shock hazards.
Keep supply flexible cord away from cutting means.

Operation

Never allows children or people unfamiliar with these instructions to use the machine. Local regulations may restrict the age of the operator. When not in use store the machine out of reach of children.
This machine is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge unless they have been given supervision or instruction concerning the use of the machine by a person responsible for their safety. Children should be supervised to ensure that they do not play with the machine.
Never mow while people, especially children, or pets are nearby.
The operator or user is responsible for accidents or hazards occurring to other people or their property.
Do not operate the machine when barefoot or wearing open sandals, always wear substantial footwear and long trousers.
Thoroughly inspect the area where the machine is to be used and remove all stones, sticks, wires, bones, and other foreign objects.
Before using, always visually inspect to see that the blades, blade bolts and cutter assembly are not worn or damaged. Replace worn or damaged blades and bolts in sets to preserve balance.
Mow only in daylight or in good artificial light.
Avoid mowing in bad weather conditions especially when there is a risk of lightning.
Avoid operating the machine in wet grass, where feasible.
Walk, never run.
Never operate the appliance with defective guards or shields, or without safety devices, for example, deflectors and/or grass catchers in place.
Always wear ear protection.
Working in banks can be dangerous.
– Do not mow on excessively steep slopes.
– Always be sure of your footing on slopes or wet grass.
– Mow across the face of slopes – never up and down.
– Exercise extreme caution when changing direction on slopes.
Use extreme caution when stepping back or pulling the machine towards you.
Never mow by pulling the mower towards you.
Wait until the blades stop if the machine has to be tilted for transportation when crossing surfaces other than grass and when transporting the machine to and from the area to be mowed.
Do not tilt the machine when starting or switching on the motor, except if the machine has to be tilted for starting in long grass. In this case, do not tilt it more than absolutely necessary and tilt only the part which is away from the operator. Always ensure that both hands are in the operating position before returning the machine to the ground.
Switch on the motor according to the instructions with feet well away from rotating parts.
Do not put hands or feet near or under rotating parts.
Always stand clear of the discharge zone when operating the machine.
Never pick up or carry the machine while the motor is running.
Do not modify this product. Unauthorized modifications may impair the safety of your product and may result in increased noise and vibration.
Regularly inspect the supply cable and any extension cables. Do not connect damaged cables to the supply or touch a damaged cable before it is disconnected from the supply. A damaged cable can lead to contact with live parts. Beware electric shock hazards.

Remove the plug from the socket:

Whenever you leave the machine.
before clearing a blockage,
before checking, cleaning, or working on the machine,
and after striking a foreign object. Inspect the machine for damage and make repairs as necessary,
if the machine starts to vibrate abnormally (check immediately).

Connecting to the mains

The voltage indicated on the rating plate must correspond to the voltage of the power source.
We recommend that this equipment is only connected to a socket that is protected by a circuit-breaker that would be actuated by a 30 mA residual current.
Only use or replace power supply cables for this unit that correspond to the types indicated by the manufacturer. See the operating instructions for order no. and types.
Never touch the mains plug with wet hands.
Do not run over, crush or pull the power supply cord or extension cord, otherwise, it may be damaged. Protect the cable from heat, oil, and sharp edges.
The extension lead must have a cross-section in accordance with the operating instructions and be protected against splashed water. The connection must not be in the water.
Always wear gardening gloves when handling or working near sharp blades.

Electrical Safety

Warning! Switch off, and remove the plug from the mains before adjusting, cleaning or if the cable is cut, damaged, or entangled.
The blades continue to rotate for a few seconds after the machine is switched off.
Caution – do not touch the rotating blade.

Your machine is double insulated for safety and requires no earth connection. The operating voltage is 230 V AC, 50 Hz (for non-EU countries 220 V, 240 V as applicable). Only use approved extension cables. Contact your Bosch Service Centre for details. Extension cords/leads should only be used if they comply with H05VV-F, H05RN-F types, or IEC type design (60227 IEC 53, 60245 IEC 57). If you want to use an extension cable when operating your product, only the following cable dimensions should be used:

1.0 mm 2: max. length 40 m 2
1.5 mm: max. length 60 m 2
2.5 mm: max. length 100 m

Note: If an extension cable is used it must be earthed and connected through the plug to the earth cable of your supply network in accordance with prescribed safety regulations. If in doubt contact a qualified electrician or the nearest Bosch Service Centre.

WARNING! Inadequate extension cables can be dangerous. Extension cable, plug, and socket must be of watertight construction and intended for outdoor use.

Cable connections should be kept dry and off the ground. It is recommended for increased electrical safety to use a Residual Current Device (RCD) with a tripping current of not more than 30 mA. Always check your RCD every time you use it.
For products not sold in GB: WARNING: For your safety, it is required that the plug attached to the machine is connected with the extension cord. The coupling of the extension cord must be protected against splash water, be made of rubber or coated with rubber. The extension cord must be used with a cable strain relief.
The connection lead must be inspected for signs of damage at regular intervals and may only be used if in perfect condition.
If the supply cord is damaged, it must be replaced by a Bosch Service Centre.
Products sold in GB only: Your product is fitted with a BS 1363/A approved electric plug with internal fuse (ASTA approved to BS 1362).
If the plug is not suitable for your socket outlets, it should be cut off and an appropriate plug fitted in its place by an authorised customer service agent. The replacement plug should have the same fuse rating as the original plug. The severed plug must be disposed of to avoid a possible shock hazard and should never be inserted into a mains socket elsewhere.
Products sold in AUS and NZ only: Use a residual current device (RCD) with a rated residual current of 30 mA or less.

Maintenance

Always wear gardening gloves when handling or working near the sharp blades.
Keep all nuts, bolts and screws tight to be sure that the machine is in safe working condition.
Check the grass catcher frequently for wear or deterioration.
Examine the machine and replace worn or damaged parts for safety.
Ensure replacement cutting means of the right type are used
Ensure replacement parts fitted are Bosch approved.
Before storage ensure the machine is clean and free from debris, if necessary clean with a soft, dry brush.

Symbols
The following symbols are important for reading and understanding the operating instructions. Please take note of the symbols and their meaning. The correct interpretation of the symbols will help you to use the garden product in a better and safer manner.

Symbol	Meaning

| Reaction direction

| Movement direction

| Wear protective gloves

| Weight

| Switching On

| Switching Off

| Permitted action

| Prohibited action

| Accessories/Spare Parts

Intended Use

The garden product is intended for domestic lawnmowing.

Technical Data

Lawnmower| | ARM 33/ARM 34/ARM 34 R/ ARM 1300-34 R/ARM 3400| ARM 36/ARM 37/ARM 37 R/ ARM 1400-37 R/ARM 3700
---|---|---|---
Article number| | 3 600 HA6 1..| 3 600 HA6 2..
Rated power input| W| 1300| 1400
Blade width| cm| 34| 37
Height of cut| mm| 20 – 70| 20 – 70
Grassbox, capacity| I| 40| 40
Weight according to EPTA-Procedure 01:2014| kg| 12.0| 13.
Protection class| | /II| /II
Serial number| | | type plate on the garden product

The values given are valid for a nominal voltage [U] of 230 V. For different voltages and models for specific countries, these values can vary. Starting cycles generate brief voltage drops. Interference with other equipment/machines may occur in case of unfavourable mains system conditional functions are not to be expected for system impedances below 0.36 ohm.

Noise/Vibration Information

Sound emission values were determined according to EN 60335-2-77.
Typically the A-weighted noise levels of the product are:
Sound pressure level
Sound power level
Uncertainty K
Wear hearing protection!| 3 600 …
dB(A)
dB(A)
dB| HA6 1.
91
96
=2| HA6 2.
92
96
=1
---|---|---|---

Wear hearing protection!

Vibration total values ah (triax vector sum) and uncertainty K determined according to toEN 60335-2-77:| | |
---|---|---|---
Vibration emission value ah| 2 m/s| <2.5| <2.5
Uncertainty K| 2 m/s| =1.5| =1.5

Declaration of Conformity

3 600 … HA6 1. HA6 2.

We declare under our sole responsibility that the product described under “Technical data” is in conformity with all relevant provisions of the directives 2011/65/EU, until 19 April 2016: 2004/108/EC, from 20 April 2016 on: 2014/30/EU, 2006/42/EC, 2000/14/EC including their amendments and complies with the following standards: EN 60335-1, EN 60335-2-77, EN 50581. 2000/14/EC: Guaranteed sound power level: Conformity assessment procedure according to Annex VI.| dB(A)| 96| 96

Equipment category: 32
Notified body:
SRL, Sudbury, England, Nr. 1088
Technical file (2006/42/EC, 2000/14/EC) at:
Bosch Lawn and Garden Ltd., PT-HG/ENS-PA2,
Stowmarket, Suffolk IP14 1EY, England

Henk Becker Executive Vice President Engineering| Helmut Heinzelmann Head of Product Certification PT/ETM9
---|---
Robert Bosch Power Tools GmbH 70538 Stuttgart, GERMANY Stuttgart, 01.01.2017

Mounting and Operation

Action	Figure	Page
Delivery Scope	1	201
Wheel Assembly	2	202
Handle Assembly	3	203
Snap together the Grassbox Grassbox fitting/removing	4	204
Adjusting the Cutting Height	5	204
Action	Figure	Page
---	---	---
Starting	6	205
Stopping	6	205
Working Advice	7	206
Blade Maintenance	8	206
Selecting Accessories	9	207

Troubleshooting

Problem
Motor refuses to start| Possible Cause Power turned off| Corrective Action Turn power on
---|---|---
Mains socket faulty| Use another socket
Extension cable damaged| Inspect cable, replace if damaged
Fuse faulty/ blown| Replace fuse
Grass too long| Increase the height of cut and tilt garden product to reduce starting load
The motor protector has activated| Allow the motor to cool and increase the height of cut
Machine functions intermittently| Extension cable damaged| Inspect cable, replace if damaged
Internal wiring of machine damaged| Contact Service Agent
The motor protector has activated| Allow the motor to cool and increase the height of cut
The machine leaves ragged finish and/or
Motor labours| Height of cut too low| Increase the height of cut
Cutting blade blunt| Replace the blade
Possible clogging| Check underneath the garden product and clear out as necessary (always wear protective gloves)
Blade fitted upside down| Refit blade correctly
Blade not rotating while garden product switched on| Cutting blade obstructed| Switch off the garden product
Clear obstruction (always wear protective gloves)
Blade nut/bolt lose| Tighten blade nut/bolt (17 Nm)
Excessive vibrations/noise| Blade nut/bolt lose| Tighten blade nut/bolt (17 Nm)
Cutting blade damaged| Replace the blade

After-sales Service and Application Service
www.bosch-garden.com
In all correspondence and spare parts orders, please always include the 10-digit article number given on the type plate of the garden product.
Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham
Uxbridge
UB 9 5HJ
At www.bosch-pt.co.uk you can order spare parts or arrange
the collection of a product in need of servicing or repair.
Tel. Service: (0344) 7360109
E-Mail: boschservicecentre@bosch.com

Robert Bosch Power Tools GmbH
70538 Stuttgart
GERMANY
www.bosch-garden.com

Documents / Resources

| BOSCH ARM33 Electric Lawn Mower [pdf] Instruction Manual
ARM33, ARM33 Electric Lawn Mower, Electric Lawn Mower, Lawn Mower, Mower, ARM34, ARM34R
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