Stihl RMA 510 User Manual

STIHL RMA 510

WARNING

Read Instruction Manual thoroughly before use and follow all safety precautions – improper use can cause serious or fatal injury.

ADVERTENCIA

Antes de usar la máquina lea y siga todas las precauciones de seguridad dadas en el manual de instrucciones – el uso incorrecto puede causar lesiones graves o mortales.

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Instruction Manual Manual de instrucciones

Instruction Manual 1 - 36

Manual de instrucciones 37 - 75

Contents

English

Guide to Using this Manual 2 Important Safety Instructions 2 Safety Precautions and Working

Techniques 3 General Safety Warnings and

Instructions for Battery-Powered Products 12

Using the Unit 13 Mulching 13

Original Instruction ManualPrinted on chlorine-free paper

Grass Bag 15 Mounting the Handle 15 Adjusting Cutting Height 17 Connecting Charger to Power

Supply 17 Charging the Battery 18 LEDs on Battery 19 LED on Charger 20 Switching On ECO Mode 21 Switching Off ECO Mode 21 Switching On 21 Switching Off 22 Storing the Machine 23

Printing inks contain vegetable oils, paper can be recycled.

Inspection and Maintenance by User 24

Sharpening Instructions 25 Maintenance and Care 27 Main Parts 28 Specifications 30 Troubleshooting 32 Maintenance and Repairs 34 Battery Recycling 34 Limited Warranty 34

Trademarks 35 Addresses 36

Do not lend or rent the lawn mower without this instruction manual. Allow only persons who fully understand the information in this manual to operate the mower.

To receive maximum performance and satisfaction from your STIHL lawn mower, it is important that you read, understand and follow the safety precautions and the operating and maintenance instructions in the chapters "Important Safety Instructions" and "Safety Precautions and Working Techniques" before using your lawn mower.

For further information, or if you do not understand any of the instructions in this manual, please go to www.stihlusa.com or contact your authorized STIHL servicing dealer.

WARNING

Because this lawn mower is a highspeed cutting tool and is batterypowered, some special safety precautions must be observed to reduce the risk of personal injury. Careless or improper use may cause serious or even fatal injury, including the amputation of hands and feet.

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ECO

Guide to Using this Manual

Pictograms

The meanings of the pictograms attached to or embossed on the machine are explained in this manual.

Depending on the model concerned, the following pictograms may be on your machine.

Fuse Key

ECO

Symbols in Text

Many operating and safety instructions are supported by illustrations.

The individual steps or procedures described in the manual may be marked in different ways:

N A bullet marks a step or procedure. A description of a step or procedure that

refers directly to an illustration may contain item numbers that appear in the illustration. Example:

N Loosen the screw (1). N Lever (2) ...

In addition to the operating instructions, this manual may contain paragraphs that require your special attention. Such

paragraphs are marked with the symbols and signal words described below:

DANGER

Indicates a hazardous situation that, if not avoided, will result in death or serious injury.

WARNING

Indicates a hazardous situation that, if not avoided, could result in death or serious injury.

NOTICE

Indicates a risk of property damage, including damage to the machine or its individual components.

Engineering Improvements

STIHL’s philosophy is to continually improve all of its products. As a result, engineering changes and improvements are made from time to time. Therefore, some changes, modifications and improvements may not be covered in this manual. If the operating characteristics or the appearance of your machine differs from those described in this manual, please contact your STIHL dealer for assistance.

Important Safety Instructions

READ ALL INSTRUCTIONS

WARNING

When using electric lawn mowers, basic safety precautions should always be followed to reduce the risk of fire, electric shock and personal injury, including the following:

1. Avoid Dangerous Environments – Do not use lawn mowers in damp or wet locations.

2. Do Not Use In Rain.

3. Keep Children and Bystanders Away – All bystanders should be kept a safe distance from work area.

4. Dress Properly – Do not wear loose clothing or jewelry. They can be caught in moving parts. Substantial footwear is recommended. Never wear sandals, tennis shoes, flip flops or similar footwear or go barefoot. Wear heavy-duty work gloves (e.g. made of leather or other wearresistant material) when transporting the mower or carrying out work on the mower blade.

5. Use Protective Glasses – Always use an approved face or dust mask if operation is dusty.

6. Use the Right Appliance – Do not use the lawn mower for any job except that for which it is intended.

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7. Do Not Force the Lawn Mower – It will do the job better and more safely at the rate for which it was designed.

8. Do Not Overreach – Keep proper footing and balance at all times.

9. Stay Alert – Watch what you are doing. Use common sense. Do not operate the lawn mower when you are tired.

10. Disconnect the Lawn Mower – Disconnect the lawn mower from the power supply by removing the fuse key and battery when not in use, before servicing, when changing accessories such as blades, and the like.

11. Store Lawn Mower Indoors – When not in use, lawn mower should be stored indoors in a dry and locked place – out of reach of children.

12. Maintain the Lawn Mower With Care – Keep cutting edges sharp and clean for optimal performance and to reduce the risk of injury. Follow instructions for lubricating and changing accessories. Inspect lawn mower periodically and, if damaged, have it repaired by an authorized service facility.

13. Keep handles dry, clean and free from oil and grease.

14. Keep guards in place and in working order.

15. Keep blades sharp.

16. Keep hands and feet away from cutting area.

17. Objects struck by lawn mower blade can cause severe injuries to persons. The lawn should always be carefully examined and cleared of all objects prior to each mowing.

18. If lawn mower strikes a foreign object, follow these steps:

N Stop lawn mower. Release switch

lever.

N Remove fuse key and battery. N Inspect for damage. N Have any damage repaired by an

authorized service facility before restarting and operating the lawn mower.

19. Use identical replacement blades only.

SAVE THESE INSTRUCTIONS

Safety Precautions and Working Techniques

Because this lawn mower is a high-speed, fast-cut ting power tool and is battery-powered, special safety precautions must be observed to reduce the risk of personal injury.

It is important that you read, fully understand and observe the following safety precautions and warnings. Read the instruction manual and the safety precautions periodically. Careless or improper use may cause serious or fatal injury.

Have your STIHL dealer show you how to operate your lawn mower. Observe all applicable laws, regulations, standards and ordinances.

The use of noise emitting power tools may be restricted to certain times by national or local regulations.

WARNING

Do not lend or rent your lawn mower without this instruction manual. Be sure that anyone using the mower understands the information contained in this manual.

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WARNING

Use your lawn mower only for mowing grass. Do not use it for other purposes. Misuse may result in personal injury or property damage, including damage to the mower or its blade.

WARNING

Minors should never be allowed to use this power tool. Bystanders, especially children, and animals should not be allowed in the area where it is in use. Accidents can occur if the operator is not alert to the presence of children. Children are often attracted to the machine and mowing activities. Never assume that children will remain where you last saw them. Keep children under the watchful eye of a responsible adult other than the operator. Use extra care when approaching blind corners, shrubs, trees or other objects that may block your view of a child.

WARNING

To reduce the risk of injury to bystanders and damage to property, never let your lawn mower run unattended. When it is not in use (e.g. during a work break), shut it off and make sure that unauthorized persons do not use it. To do this, remove the fuse key and battery from the power tool.

Most of these safety precautions and warnings apply to the use of all STIHL lawn mowers. Different models may have different parts and controls. See the appropriate section of your instruction manual for a description of the controls and the function of the parts of your model.

Always remove fuse key and battery before inspecting, cleaning, transporting, storing or carrying out any work on the mower. This avoids the risk of the motor starting unintentionally.

Use only original STIHL replacement parts, including the cutting blade. They are specifically designed to match your model and meet your performance requirements. Use of non-STIHL parts may reduce the operational efficiency of the mower or may cause serious or fatal injury.

Safe use of a lawn mower involves

1. the operator

2. the power tool

3. the use of the power tool.

THE OPERATOR

Physical Condition You must be in good physical condition

and mental health and not under the influence of any substance (drugs, alcohol, etc.) which might impair vision, dexterity or judgment. Do not operate this mower when you are fatigued.

WARNING

Be alert – if you get tired, take a break. Tiredness may result in loss of control. Working with any power tool can be strenuous. If you have any condition that might be aggravated by strenuous work, check with your doctor before operating this mower.

Proper Clothing

WARNING

To reduce the risk of injury, the operator should wear proper protective apparel.

The mower deck of your lawn mower will not protect the operator from all foreign objects (gravel, glass, wire, etc.) thrown back by the rotating cutting blade. Thrown objects may also ricochet and strike the operator, bystanders or property. Avoid discharging material against a wall or obstruction.

To reduce the risk of eye injury, always wear gog gles or close-fitting protective glasses with adequate side protection that are impact-rated and marked as complying with ANSI Z87 “+”. Wear ers of prescription (Rx) eyewear should wear eye protection that meets these requirements and that incorporates the pre scription in its design or that can be worn over prescription lenses with out disrupting either the prescription eyewear or the protective eyewear.

Clothing must be sturdy but allow complete free dom of movement. Wear long pants to help pro tect your legs. Do not wear shorts.

Avoid loose-fitting jackets, scarfs, neckties, jewelry, flared or cuffed pants, unconfined long hair or anything that

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could become caught on branches, brush or the moving parts of the mower. Secure hair so it is above shoulder level.

Good footing is very important. Wear sturdy shoes with nonslip soles. Never wear tennis shoes, sandals, flip-flops or simi lar footwear or go barefoot.

The cutting blade is sharp. Always wear heavy-duty work gloves (e.g. made of leather or other wear-resistant material) when transport ing the machine and carrying out work on the cutting blade.

THE POWER TOOL

For illustrations and definitions of the power tool parts see the chapter on "Main Parts."

WARNING

Never modify your lawn mower in any way. Only attachments supplied by STIHL or expressly authorized by STIHL for use with the specific STIHL model are recommended. Although certain unauthorized attachments are useable with STIHL power tools, their use may, in fact, be extremely dangerous.

If your lawn mower is subjected to unusually high loads for which it was not designed (e.g. heavy impact or a fall), always check that it and the battery are in good condition before continuing work – see also "Before Starting Work." Make

sure all safety devices are working properly. Do not continue operating your lawn mower if it is damaged. In case of doubt, have it checked by your STIHL servicing dealer.

Battery

WARNING

Risk of fire, explosion and/or burns, including chemical burns. Do not disassemble, crush, heat above 212 °F (100 °C), expose to fire or inciner ate. Never expose the battery to microwaves or high pressures.

Do not place the battery on or near fires, stoves or in other high-temperature locations. Do not place the battery in direct sunlight or store it inside a vehicle in hot weather. Doing so may cause the battery to generate heat, rupture or ignite. Using the batteries in this manner may also result in a loss of performance and a shortened battery life.

In case of fire: stay clear of any vapors or gases generated, taking the wind direction into account. If possible without danger, remove the battery from the vicinity of the fire. Cooling the battery or extinguishing the fire with ample amounts of water may be possible. It is preferable, however, to extinguish the fire with a multipurpose dry chemical fire extinguisher. As for any fire, evacuate the area and call the fire authorities. Once the fire has been extinguished, the area should be monitored (fire watch) in case of a flare-up, until the battery has cooled sufficiently. Restrict access to the

area until the completion of clean-up. Do not touch the burned battery or any spilled liquids. Use an inert absorbent such as sand on spilled liquids.

Use and store the bat tery only within a temperature range from 14 °F (-10 °C) to 122 °F (50 °C). Protect the bat tery from direct sunlight.

WARNING

Use STIHL AP batteries with this mower. Charge only with STIHL AL chargers.

Use of unauthorized batteries can damage the mower and result in fire, explosion and personal injury and property damage.

WARNING

To reduce the risk of per sonal injury or property damage from a short cir cuit, fire or explosion, keep the battery dry. Protect it from rain, water, liquids and damp condi tions. Never immerse the battery in water or other liquids.

WARNING

Do not open, drop, hit or damage the battery. Never insert objects into the battery's cooling slots, since they may damage the battery. The battery contains safety features and devices which, if damaged, may cause the battery to generate heat, rupture or

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ignite or explode. Never use or charge a defective, damaged, cracked, deformed or leaking battery.

To reduce the risk of personal injury and property damage in the event the battery emits smoke, an unusual smell or feels unusually hot while using, charging or storing, immediately discontinue using or charging the battery. Prepare to contact the authorities in the event of fire or explosion.

WARNING

Fluid may leak from the battery if it is damaged or is not used properly – avoid contact with the skin. Leaking battery fluid can cause skin irritation and chemical burns. In the event of accidental contact, immediately rinse thoroughly with mild soap and water. If fluid gets into your eye(s), do not rub your eye(s) but rinse water over the open eye(s) for at least 15 minutes and seek immediate medical attention.

WARNING

Never bridge the battery terminals with metallic objects, since this will cause a short circuit and may damage the battery and possibly cause a fire or explosion. Keep a battery that is not in use away from metal objects (e.g. nails, coins, jewelry). Do not use metal containers for transporting or storing batteries.

Store the battery out of reach of children in a cool and dry area away from direct sunlight and excess heat or cold (14 °F to 122 °F (-10 °C to 50 °C)).

Read, fully understand and observe the instruction leaflet or instruction manual for the STIHL battery and keep it in a safe place.

Charger Use STIHL AP batteries with this mower.

Charge only with STIHL AL chargers.

WARNING

Never charge defective, damaged, cracked, deformed or leaking batteries.

To reduce the risk of shock and/or fire, connect the charger only to a power supply with the voltage and frequency specified on the rating plate. Always plug the charger into a properly installed wall outlet. Do not use an extension cord unless absolutely necessary (see below).

Protect the charger from rain and dampness. Keep charger dry.

WARNING

Never insert a wet battery into the charger. Attempting to charge a wet battery could cause the charger to short circuit.

Use and store the charger only indoors in dry rooms.

Operate charger at temperatures between 41 °F (5 °C) and 104 °F (40 °C).

Allow the charger to cool down normally – do not cover it.

Never bridge the contacts of the charger with metallic objects (e.g. nails, coins, jewelry). The charger will be damaged by a short circuit resulting in a risk of fire and explosion.

In the event of smoke or fire in the charger, disconnect it from the outlet immediately and contact the fire department.

WARNING

To reduce the risk of electric shock or short circuit, do not insert any objects into the charger's cooling slots.

WARNING

The charger heats up during the charging process. To reduce the risk of fire, do not operate on an easily combustible surface (e.g. paper, cardboard, textiles) or in an easily combustible environment.

WARNING

Chargers can produce sparks which may ignite combustible gases, liquids, vapors, dusts or other combustible materials. To reduce the risk of fire and explosion, do not operate the charger in a location where such materials are present.

Never use a charger with a damaged housing, power supply cord or plug. Do not operate the charger if it has received a sharp blow, been dropped or otherwise damaged in any way.

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Check the charger's power supply cord and plug regularly for dam age. If the power supply cord or plug is damaged, immediately disconnect the plug from the wall outlet to avoid the risk of electric shock.

Never jerk the power supply cord to disconnect it from the wall outlet. To unplug, grasp the plug, not the cord. Replace a damaged power supply cord or have it repaired by an experienced electrician.

Do not use the power supply cord for any other purpose, e.g. for carrying or hanging up the charger. Never use power supply cords that do not comply with applicable electrical codes and regulations.

Make sure the power supply cord is located and/or marked so that it will not be stepped on, tripped over, come in contact with sharp edges or moving parts or otherwise be subjected to damage or stress.

WARNING

To reduce the risk of shock and/or overheating and fire, an extension cord should not be used unless absolutely necessary. If an extension cord must be used, plug the charger into a properly wired 16 gauge (AWG 16) or heavier gauge extension cord with blades that are the same number, size and shapes as the blades on the charger.

Unplug the power supply cord from the outlet when charger is not in use.

Do not open or dissassemble charger there are no user-serviceable parts inside.

Never store a battery in the charger. Store the charger out of the reach of

children.

THE USE OF THE MOWER

Transporting the Unit

WARNING

To reduce the risk of injury from blade contact, never carry or transport your lawn mower with the cutting blade moving. Always wear heavy-duty work gloves.

WARNING

Always switch off the mower and remove the fuse key and battery before picking up or transporting the unit. When transporting it in a vehicle, properly secure the lawn mower and its parts (e.g. grass bag) to prevent turnover and damage. Use ropes or straps to secure the handles.

Remove the fuse key and battery before picking up or transporting the unit. This avoids the risk of the motor starting unintentionally.

If carrying the lawn mower by hand, use two persons:

– Hold the cover with both hands (1). – Hold the left bracket with the left

hand, right bracket with the right hand (2).

Always keep the cutting blade away from your body.

Before Starting Work

WARNING

Always check your lawn mower for proper condition and operation before starting, particularly the switch lever and switch lever lockout. The switch lever and the switch lever lockout must move freely and always spring back to the off position. Never attempt to modify the controls or safety devices.

0000-GXX-2634-A0

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0000-GXX-2635-A0

WARNING

Folding or unfolding the handle improperly can damage the mower's cable controls and affect the proper function of the on/off mechanism. To reduce the risk of damage, do not pinch or crimp the cables when folding the unit. Inspect the cables after unfolding the mower and before inserting the battery to ensure that the cables have not been damaged in any way.

WARNING

Never operate your lawn mower if it is damaged, improperly adjusted or maintained, or not completely and securely assembled.

Keep the handles of the mower clean and dry at all times; it is particularly important to keep them free of moisture, pitch, oil, grease or resin in order for you to maintain a firm grip and properly control your lawn mower.

WARNING

The cutting blade must be properly tightened and in good operating condition. Remove the battery and fuse key and inspect the condition and tightness of the cutting blade before starting work and at regular intervals. Replace a damaged cutting blade before using the mower.

Do not use your lawn mower if safety devices are damaged, the coast down brake does not operate or safety devices are not properly mounted and in working order.

Inspect the grass bag frequently and replace with an authorized replacement if there are signs of wear or deterioration. Never use your mower with a damaged grass bag.

Check contacts in the battery compartment for foreign matter. Keep the compartment clean.

Insert the battery correctly. Operate the mower only with the battery

compartment closed.

WARNING

Inspect the work area before you start the lawn mower: to reduce the risk of injury, clear the work area of stones, glass, pieces of metal, trash and other objects that could be thrown by the cutting blade.

WARNING

If a rotating metal blade strikes a rock or other hard object, sparks may be created, which can ignite flammable materials under certain circumstances. Flammable materials can include dry vegetation and brush, particularly when weather conditions are hot and dry. When there is a risk of fire or wildfire, do not use metal blades around flammable materials or around dry vegetation or brush. Contact your local fire authorities or the U.S. Forest Service if you have any question about whether vegetation and weather conditions are suitable for the use of a metal blade.

WARNING

Your lawn mower is a one-person machine. Do not allow other persons in the general work area, even when starting.

During Operation Holding and Controlling the Lawn

Mower

Always hold the unit firmly with both hands on the handle and switch lever while you are working. Wrap your fingers and thumbs around the handle and switch lever when cutting.

Never attempt to operate your lawn mower with one hand. Loss of control may result in serious or fatal injury.

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WARNING

To reduce the risk of cut injuries, never put hands or feet near or under the machine or near the ejec tion chute. Never touch a moving cutting blade with your hand or any other part of your body. To reduce the risk of injury, never attempt to clear clippings or debris from cutting blade, deck or ejection chute without first switching off motor and removing fuse key and battery.

WARNING

Release the switch lever and wait for the cutting blade to come to a complete stop before removing the grass bag or wheeling the mower over surfaces other than grass. Stay behind the handle when the motor of the mower is running.

WARNING

Do not overreach. Keep proper footing and balance at all times. Special care must be taken in slippery conditions and in difficult, overgrown terrain. Watch for hidden obstacles such as tree stumps, roots and ditches to avoid stumbling. Tall grass can hide obstacles and debris. Do not mow near drop offs, ditches or embankments. You could lose your footing and balance. Be extremely cautious when working on slopes or uneven ground. Slopes are a major factor related to slip and fall accidents, which in turn can result in severe injury.

Do not mow extremely steep slopes. To reduce the risk of injury, do not operate your machine on slopes with a grade of more than 25%. If you feel uneasy on a slope, do not mow it.

WARNING

Mow parallel to the slope, never up or down. Take particular care when changing direction on slopes.

Do not pull the mower backwards unless absolutely necessary. Always look down and behind before and while mowing backwards.

Working Conditions Operate your mower only under good

visibility and daylight conditions. Work carefully.

WARNING

If the vegetation being cut or the surrounding ground is coated with a chemical substance (such as an active pesticide or herbicide), read and follow the instructions and warnings that accompanied the substance involved.

WARNING

Inhalation of certain dusts, especially organic dusts such as mold or pollen, can cause susceptible persons to have an allergic or asthmatic reaction. Substantial or repeated inhalation of dust and other airborne contaminants, in particular those with a smaller particle size, may cause respiratory or other illnesses. Control dust at the source where possible. Use good work

practices, such as operating the mower so that the wind or operating process directs any dust raised by the power tool away from the operator. Follow the recommendations of EPA/OSHA/NIOSH and occupational and trade associations with respect to dust ("particulate matter"). When the inhalation of dust cannot be substantially controlled, i.e., kept at or near the ambient (background) level, the operator and any bystanders should wear a respirator approved by NIOSH/MSHA for the type of dust encountered.

Operating Instructions Start the mower on a flat surface. Do not

tilt the mower when you switch on the motor.

Do not switch on the mower in high grass.

For specific starting instructions, see the chapter "Switching On" in the instruction manual.

WARNING

Keep hands and feet away from cutting blade.

WARNING

In the event of an emergency, switch off the motor immediately by releasing the switch lever and remove the fuse key and battery.

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15 m (50 ft)

WARNING

The cutting blade continues to rotate for a short period after the switch lever is released. This is known as the flywheel effect.

WARNING

The rotating cutting blade may throw foreign objects directly or by ricochet. Keep bystanders, especially children, and animals away from the work area.

To reduce the risk of injury ensure that bystanders are at least 50 feet (15 m) away. To reduce the risk of damage to property, also maintain this distance from such objects as vehicles or windows.

Switch off the motor immediately by releasing the switch lever if you are approached.

WARNING To reduce the risk of personal injury: Operate the mower at walking pace only

– never run. Do not use the mower for transporting

persons, particularly children, or objects. Do not attach objects to the handle.

WARNING

During cutting, check the tightness and the condition of the cutting blade at regular short intervals with the motor and blade stopped and the fuse key and battery removed. If the behavior of the blade changes during use, switch off the motor immediately, wait until the cutting blade stops, remove the fuse key and battery and check the screw securing the blade for tightness and the blade for cracks, wear and damage. Never examine the cutting blade while the motor is running. To avoid the risk of injury from the rotating cutting blade, never open the rear discharge cover or remove the grass bag while the motor is running.

If the machine should start to vibrate abnormally, stop the motor, remove the fuse key and battery and check for the cause immediately. Vibration is generally a warning of trouble. Do not restart the motor until the cause of the abnormal vibration is identified and resolved.

WARNING

If the cutting blade becomes obstructed, or if there is a blockage in the rear or side discharge chutes or in the area of the cutting blade, always switch off the motor, remove the fuse key and battery and make sure the cutting blade has stopped before cleaning.

In the event of contact with foreign matter, check the cutting blade for signs of damage. Do not operate your mower with a damaged or bent blade shaft or motor shaft.

WARNING

To reduce the risk of unintentional rotation of the cutting blade and severe personal injury or death, always switch off the motor and remove fuse key and battery before replacing the cutting blade. Always switch off the motor by releasing the switch lever before adjusting the cutting height.

DANGER

Do not rely on the mower’s insulation against electric shock. To reduce the risk of electro cution or electric shock, never contact electrical cables or wires or oper ate this mower in the vicinity of any wires or cables which may be car rying electric current.

Do not overload your mower during operation to a point where the motor slows down. If motor speed begins to slow, select a higher cutting height or walk slower.

Switching the mower on and off frequently within a short period may cause the motor to overheat.

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If the motor is thermally overloaded during operation, it is designed to cut out automatically and must cool down before it is restarted. Causes of overload:

– Mowing overlong grass or cutting

height set too low.

– Feed rate too high from walking too

fast. – Dirty cooling air inlets (intake slots). Do not operate the mower at

temperatures below 41 °F (5 °C). Do not mow wet grass.

The drive motor is not waterproof. Never work with the lawn mower in the rain or in wet or very damp locations.

Do not leave the mower outdoors in the rain.

Do not operate the machine when there is a risk of lightning strike.

The switch and safety devices installed in the machine must not be removed or bypassed. In particular, never secure the switch lever to the handle (e.g. by tying it).

Do not operate the machine with a folded handle.

Do not switch on the motor if either the rear or side ejection chute is not shielded appropriately.

MAINTENANCE, REPAIR AND STORING

If you make a warranty claim for a component which has not been serviced or maintained properly STIHL may deny coverage.

WARNING

Use only identical STIHL replacement parts for maintenance and repair, including the cutting blade. Use of nonSTIHL parts may reduce operational efficiency or may cause serious or fatal injury.

Strictly follow the maintenance and repair instructions in the appropriate section of your instruction manual. Please also refer to the maintenance chart in this manual.

WARNING

Always switch off the motor, remove the fuse key and battery and make sure that the cut ting blade is stopped before doing any mainte nance or repair work, replacing the cutting attachment or cleaning the mower. This avoids the risk of the motor start ing unintentionally. Do not attempt any mainte nance or repair work not described in your instruc tion manual. STIHL recommends having such work performed by your STIHL servicing dealer.

Tighten all nuts, bolts and screws after each use.

Regularly check the electrical contacts and ensure that the insulation of the power cord and plug of the charger is in good condition and shows no sign of damage.

Electrical components, e.g. power cord of charger, may only be repaired or replaced by a qualified electrician.

Clean plastic components with a cloth. Do not use aggressive detergents. They may damage the plastic.

Clean cooling air inlets in motor housing as necessary.

Do not spray the mower with water. Do not clean your mower with a

pressure washer. The solid jet of water may damage parts of the machine.

Keep the battery guides free from foreign matter – clean as necessary.

Maintain or replace warning and instruction labels as necessary.

Store the mower in a dry, locked location with the fuse key and battery removed and out of reach of children.

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General Safety Warnings and Instructions for BatteryPowered Products

This section contains the prescribed general safety warnings and instructions for battery-powered products contained in UL 2595.

WARNING

Read all safety warnings and instructions. Failure to follow the warnings and instructions may result in electric shock, fire, explosion and/or serious injury or property damage.

1. Prevent unintentional starting.

Ensure the switch lever is in the off-

position before inserting the battery

2. Remove the fuse key and battery

before picking up or carrying the

mower and before making any

adjustments, changing accessories

or storing. Such preventive safety

measures reduce the risk of starting

the mower accidentally.

3. Recharge only with the charger

specified by STIHL. A charger that

is suitable for one type of battery

may create a risk of fire when used

with another battery.

4. Use the mower only with the

specifically designated batteries.

Use of any other battery may create

a risk of fire or explosion and

personal injury or property damage.

5. When the battery is not in use, keep it awa y from o ther me tal obj ects, l ike paper clips, coins, keys, nails or other small metal objects that can make a connection from one terminal to another. Do not store it in a metal container. Shorting the battery terminals together may cause burns or a fire or explosion.

6. 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, chemical burns or respiratory illness from inhalation.

7. Do not use a battery or mower that is damaged or modified. Damaged or modified batteries may exhibit unpredictable behavior resulting in fire, explosion and risk of injury or property damage.

8. Do not expose a battery or the mower to fire or excessive temperature. Exposure to fire or temperature above 212° F (100° C) may cause fire and explosion.

9. Follow all charging instructions and do not charge the battery outside of the ambient temperature range specified. Charging improperly or outside the specified range may damage the battery and increase the risk of fire.

10. Have servicing performed by a qualified repair person using only authorized replacement parts. This will help maintain the safety and performance of the product.

SAVE THESE INSTRUCTIONS

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Using the Unit Mulching

Mowing

Frequent mowing contributes to a beautiful and dense lawn.

The lawn should not be kept too short in hot and dry weather because it will otherwise be burned by the sun and become unattractive.

A sharp blade produces a more attractive finish than a dull one. Sharpen the blade regularly – see also "Sharpening the Cutting Blade".

Cuttings can be mulched, collected in the grass bag or ejected from the side discharge chute.

Mowing on Slopes

Your cordless lawn mower can be used on gradients of up to 25°.

Cutting Performance

The cutting performance depends on the type of grass and the height of cut selected. Cutting performance is increased by:

– Mowing frequently. – Increasing the height of cut. – Reducing mowing speed. – Allowing lawn to dry before mowing.

Disposal

Do not throw cuttings in the garbage can – they can be composted!

Mulching

In the mulching mode, the grass clippings are recirculated in the airstream, re-cut several times into small particles and then blown back onto the lawn. The fine particles remain on the lawn surface where they decompose quickly and serve as a natural fertilizer. Frequent mulching contributes to a beautiful, dense lawn. One third of the grass height should be cut in this process.

It is advisable to mulch at least twice a week in spring and at least once a week in summer/autumn.

Mulching Result

Prerequisites for good mulching results:

– Only cut dry grass – Use properly sharpened blades – Reduce mowing speed – Vary mowing direction and overlap

the cuts

– Mow very high grass in gradual

stages

The underside of the mower deck can become clogged and block the blade if the cutting height is too low or the grass is wet.

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Conversion for Mulching

The mulch insert must be installed for mulching.

N Remove the grass bag, see

“Removing the Grass Bag”

N Adjust the height of cut, see

“Adjusting Cutting Height”

N Fit the mulch insert, see “Fitting the

Mulch Insert”

Installing the Mulch Insert

Removing the Mulch Insert

N Open the rear discharge cover (1)

and hold it in position.

N Grip the mulch insert (2) by the

handle (3) and take it out of the discharge chute (4).

N Close the rear discharge cover (1).

Installing the Side Discharge Chute

The mulch insert must be in place when the side discharge is installed.

Removing the Side Discharge Chute

N Open the side discharge cover (1)

and hold it in position.

N Remove the side discharge

chute (2).

N Close the side discharge cover (1).

N Open the rear discharge cover (1)

and hold it in position.

N Hold the mulch insert (2) by the

handle (3) and fit it in the rear discharge chute (4).

N Close the rear discharge cover (1).

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N Open the side discharge cover (1)

and hold it in position.

N Line up recesses (2) in side

discharge chute (3) below the pin (4).

N Close the side discharge cover (1).

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Grass Bag

Installing the Grass Bag

N Switch off the machine. N Remove the mulch insert, see

“Removing the Mulch Insert”.

N Remove the side discharge cover,

see “Removing the Side Discharge Cover”.

N Open the rear discharge cover (1)

and hold it in position.

N Hold grass bag by the handle (2)

and engage the hooks (3) on the rod (4).

N Close the rear discharge cover (1).

Emptying the Grass Bag

N Switch off the machine. N Open the rear discharge cover (1)

and hold it in position.

N Hold grass bag by the handle (2)

and unhook it upwards.

N Close the rear discharge cover (1). N Empty the grass bag.

Mounting the Handle

WARNING

To reduce the risk of injury, always remove the battery and fuse key, place the mower on a level surface and secure it before assembling the handle.

WARNING

The lower handle, and upper handle, can be folded down after rotating the handle knobs. Check that the star knobs are firmly tightened. Hold the handle at the highest point with one hand and rotate the handle knobs. Risk of pinching.

WARNING

The upper handle can be folded over by loosening the star knobs. Hold the handle at the highest point with one hand and loosen the star knobs. Risk of pinching.

Assembling the Handle

Unfolding the lower handle

90°

N Rotate the handle knobs (1) 90°. N Unfold the lower handle (2).

90°

N Line up the handle knobs (1) in one

of the three positions on the brackets (3).

N Rotate the handle knobs (1) 90° so

that they engage the holes in the brackets (3).

Make sure that both handle knobs (1) are in the same position.

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90°

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Mounting the upper handle

N Line up holes in upper handle (4)

and lower handle (5).

N Insert bolts (6) through holes in

upper handle (4) and lower handle (5).

N Screw the star knobs (7) onto the

bolts (6) and tighten them down clockwise.

N Secure cables (8) in the cable clip

(9),

Folding the lower handle

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N Rotate the handle knobs (1) 90°. N Fold the lower handle (2).

90°

Folding the upper handle

5 4

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N Unscrew the star knobs (4)

counterclockwise.

N Fold the upper handle (5). N Tighten down the star knobs (4)

clockwise.

Unfolding the Handle

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Make sure cables are not pinched when you unfold the handle.

Unfolding the lower handle

90°

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Folding the Handle

The handle can be folded to clean, transport or store your cordless lawn mower.

Make sure cables are not pinched when you fold the handle.

N Rotate the handle knobs (1) 90° so

that they engage the holes in the brackets (3).

The lower handle (2) is now locked in position.

N Rotate the handle knobs (1) 90°. N Unfold the lower handle (2).

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90°

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3901BA015 KN

3901BA019 KN

N Line up the handle knobs (1) in one

of the three positions on the brackets (3).

N Rotate the handle knobs (1) 90° so

that they engage the holes in the brackets (3).

Make sure that both handle knobs (1) are in the same position.

Unfolding the upper handle

N Unfold the upper handle (4). N Tighten down the star knobs (5)

clockwise.

Adjusting Cutting Height

Different cutting heights can be selected.

Setting Cutting

height 1 35mm (1.4in) 2 43mm (1.7in) 3 52mm (2in) 4 60mm (2.4in) 5 71mm (2.8in) 6 79mm (3in) 7 90mm (3.5in)

Adjusting Cutting Height

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To incerase cutting height: N Pull cutting height adjustment

lever (1) toward rear of mower.

Reduce cutting height: N Pull cutting height adjustment

lever (1) toward front of mower.

The selected cutting height is shown.

Connecting Charger to Power Supply

Power supply (mains) voltage and operating voltage must be the same.

N Insert the plug (1) in the wall

outlet (2).

A self test is performed after the charger is connected to the power supply. During this process, the light emitting diode (1) on the charger lights up green for about

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1 second, then red and goes off again.

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3901BA009 KN

3901BA014 KN

Charging the Battery

When delivered, the battery is not fully charged.

It is advisable to charge the battery completely before using it for the first time.

N Connect the charger to the power

supply – mains voltage and operating voltage of the charger must be the same – see "Connecting Charger to Power Supply".

Operate the charger only in a closed, dry space at ambient temperatures between 41 °F (5 ° C) and 104 °F (40 °C).

Only charge dry batteries. Allow a damp battery to dry before charging.

N Slide the battery (1) into the

charger (2) until you start to feel resistance – then push it in until it engages.

The LED (3) on the charger comes on when the battery is inserted – see "LED on Charger"

Charging begins as soon as the LEDs (4) on the battery glow green – see "LEDs on Battery".

Charge time depends on a number of factors, including battery condition, ambient temperature, etc., and may therefore vary from the times specified.

The battery heats up during operation in the power tool. If a hot battery is inserted in the charger, it may be necessary to cool it down before charging. The charging process begins only after the battery has cooled down. The time required for cooling may prolong the charge time.

The battery and charger heat up during the charging process.

AL 300, AL 500 Chargers

The AL 300 and AL 500 chargers are equipped with a battery cooling fan, which can be heard during operation.

AL 100 Charger

The AL 100 charger has no fan and waits for the battery to cool down before starting the charging process. The battery is cooled by heat dissipation in the ambient air.

End of Charge

The charger switches itself off automatically when the battery is fully charged:

– LEDs on the battery go off. – The LED on the charger goes off. – The charger's fan is switched off (if

charger is so equipped).

Remove the fully charged battery from the charger.

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3901BA010 KN

3901BA016 KN

80 - 100 %

60 - 80 %

40 - 60 %

20 - 40 %

0 - 20 %

LEDs on Battery

Four LEDs show the battery's state of charge and any problems that occur on the battery or power tool.

N Press button (1) to activate the

The LEDs can glow or flash green or red.

display – the display goes off automatically after 5 seconds.

LED glows continuously green.

LED flashes green.

LED glows continuously red.

LED flashes red.

During Charging Process

The LEDs glow continuously or flash to indicate the progress of charge.

A green flashing LED indicates the capacity that is currently being charged.

0 - 20 %

20 - 40 %

40 - 60 %

60 - 80 %

80 - 100 %

The LEDs on the battery go off automatically when the charge process is completed.

If the LEDs on the battery flash or glow red – see "If the red LEDs glow continuously / flash".

During Operation

The green LEDs glow continuously or flash to indicate the state of charge.

If the LEDs on the battery flash or glow

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red – see "If the red LEDs glow continuously / flash".

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3901BA041 KN

3901BA019 KN

If the red LEDs glow continuously / flash

A 1 LED glows

continuously

Battery is too

1) 2)

hot

red:

B 4 LEDs flash

C 3 LEDs glow

D 3 LEDs flash

red

continuously red:

red

When charging: Charge process

Malfunction in battery

Power tool is too hot – allow it to cool down.

Malfunction in power tool

starts automatically after the battery has cooled down / warmed up.

During operation: Power tool cuts out – allow battery to cool down; it may be necessary to take the battery out of the power tool for this purpose.

/cold

Electromagnetic interference or fault. Take the battery out of the

LED on Charger

power tool and refit it. Switch on the machine – if the LEDs continue to flash, the battery has a malfunction and must be replaced.

Electromagnetic interference or fault. Take the battery out of the machine. Use a blunt tool to remove dirt from the contacts in the battery compartment. Refit the battery. Switch on the power tool – if the LEDs still flash, the power tool has a malfunction and must be checked by a servicing dealer – STIHL recommends an authorized STIHL servicing dealer.

The LED (1) on the charger may glow continuously green or flash red.

Green continuous light ...

... indicates the following: The battery – is being charged

– is too hot and must cool down

before charging See also "LEDs on battery". The green LED on the charger goes off

as soon as the battery is fully charged.

Red flashing light ...

... may indicate the following: – No electrical contact between

battery and charger – remove and

refit the battery – Malfunction in battery – see also

"LEDs on Battery". – Malfunction in charger – have

checked by a servicing dealer.

STIHL recommends an authorized

STIHL servicing dealer.

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Switching On ECO Mode

When the ECO mode is selected, the mower operates at a lower RPM for situations requiring less power. This increases energy efficiency and battery runtime.

N Swing the battery compartment

cover (1) forwards.

N Move the ECO switch (2) to H. N Close the cover (1).

The battery compartment cover must always be closed during operation.

Switching Off ECO Mode

N Swing the battery compartment

cover (1) forward.

N Move the ECO switch (2) to 0.

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N Close the cover (1). The battery compartment cover must

always be closed during operation.

Switching On

A factory-new battery is not fully charged.

Recommendation: Fully charge the battery before using it for the first time.

Opening the Battery Compartment Cover

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N Lift the cover (1) up and swing it

forward.

Inserting the fuse key

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The motor can be started only when the fuse key is inserted.

N Push the fuse key (2) into the

socket (3).

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Inserting the Battery

N Insert the battery (4) in the battery

compartment and push it until it engages in position.

Closing the Battery Compartment Cover

N Press in the switch lever lockout (5)

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with your right hand and hold it there.

N Pull the switch lever (6) towards the

handle with your left hand and hold it until you hear an audible click.

N Release the switch lever

lockout (5).

Switching Off

Releasing the Switch Lever

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N To switch off the motor, release the

switch lever (1) – the cutting blade

comes to a standstill after coasting

for a few seconds. Remove the fuse key and the battery

from the machine during breaks and after finishing work.

Opening the Battery Compartment Cover

N Close the cover (1). The battery compartment cover must

always be closed during operation.

Starting

Do not start the motor in high grass or in the lowest setting since this makes starting more difficult.

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N Lift the cover (2) up and swing it

forward.

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