Stihl STIHL FSA 90 R STIHL FSA 90 R (en / fr) [en, fr]

STIHL FSA 90 R

Instruction Manual Notice d’emploi

G Instruction Manual

1 - 31

F Notice d’emploi

32 - 65

Contents

English

Guide to Using this Manual 2 Safety Precautions 2 Reactive Forces 8 Working Techniques 8 Approved Combinations of Cutting

Attachment, Deflector, Handle and Harness 10

Mounting the Loop Handle 11 Mounting the Deflector 12

Original Instruction ManualPrinted on chlorine-free paper

Mounting the Cutting Attachment 13 Connecting Charger to Power

Supply 15 Charging the Battery 16 LEDs on Battery 17 LED on Charger 18 Fitting the Harness 19 Balancing the Machine 19 Switching On 20 Switching Off 22 Storing the Machine 22 Maintaining the Mowing Head 23 Sharpening Metal Cutting Blades 24

Printing inks contain vegetable oils, paper can be recycled.

Maintenance and Care 25 Main Parts 26 Specifications 27 Troubleshooting 29 Maintenance and Repairs 31 Battery Recycling 31 Disposal 31

Dear Customer, Thank you for choosing a quality

engineered STIHL product. It has been built using modern

production techniques and comprehensive quality assurance. Every effort has been made to ensure your satisfaction and trouble-free use of the product.

Please contact your dealer or our sales company if you have any queries concerning this product.

Your

Dr. Nikolas Stihl

0458-709-8221-B. VA2.B22.

0000007009_009_GB

FSA 90 R

English

Guide to Using this Manual

This instruction manual covers a STIHL cordless trimmer which is also referred to as the power tool or machine in the descriptions.

Pictograms

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

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

Preset trigger travel (infinitely variable)

Unlock

Lock

Symbols in text

WARNING

Warning where there is a risk of an accident or personal injury or serious damage to property.

NOTICE

Caution where there is a risk of damaging the machine or its individual components.

Engineering improvements

STIHL's philosophy is to continually improve all of its products. For this reason we may modify the design, engineering and appearance of our products periodically.

Therefore, some changes, modifications and improvements may not be covered in this manual.

Safety Precautions

Some special safety precautions have to be observed when working with this power tool because of the very high speed of the cutting attachment.

It is important that you read the instruction manual before first use and keep it in a safe place for future reference. Nonobservance of the safety precautions may result in serious or even fatal injury.

General

WARNING

– Minors should never be allowed to

operate this power tool. Watch children to be sure that they do not play with the power tool.

– This power tool may be operated

only by persons who have been instructed in its use and proper handling.

– This power tool may not be used by

persons who are not able to operate it safely due to limited physical, sensory or mental ability.

FSA 90 R

English

– Lend or rent your power tool only

together with this instruction manual and only to persons who are familiar with this model and its operation.

– Remove the battery before

performing any work on the power tool, e.g. cleaning, maintenance, replacing parts.

If you have not used this model before: Have your dealer or a trained expert show you how to operate it properly and safely.

Observe all applicable local safety regulations, standards and ordinances.

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

Keep bystanders, especially children, and animals away from the work area.

The user is responsible for avoiding injury to third parties or damage to their property.

To operate this power tool you must be rested, in good physical condition and mental health.

If you have any condition that might be aggravated by strenuous work, check with your doctor before operating a power tool.

Do not operate the power tool if you are under the influence of any substance (drugs, alcohol) which might impair vision, dexterity or judgment.

Remove the battery from the power tool:

– before carrying out inspections,

adjustments or cleaning work

– before working on the cutting

attachment

– before leaving the machine

unattended

– before transporting – before storing – before performing repairs and

maintenance work

– in the event of danger or in an

emergency

This avoids the risk of the motor starting unintentionally.

Intended Use

Use your power tool only as specified for the cutting attachment mounted, see "Working Techniques".

Do not use your power tool for any other purpose – risk of accidents.

Never attempt to modify your power tool in any way since this may increase the risk of personal injury. STIHL excludes all liability for personal injury and damage to property caused while using unauthorized attachments.

Clothing and Equipment

Wear proper protective clothing and equipment.

Clothing must be sturdy but allow complete freedom of movement. Wear snug-fitting clothing, an overall and jacket combination, do not wear a work coat.

Avoid clothing that could get caught on branches or brush or moving parts of the machine. Do not wear a scarf, necktie or jewelry. Tie up and confine long hair (e.g. with a hair net, cap, hard hat, etc.).

Wear steel-toed safety boots with non-slip soles.

Sturdy shoes with non-slip soles may be worn as an alternative only when using mowing heads.

WARNING

To reduce the risk of eye injuries, wear close-fitting safety glasses in accordance with European Standard EN 166. Make sure the safety glasses are a comfortable and snug fit.

Wear a face shield. A face shield alone does not provide adequate eye protection.

Wear a safety hard hat where there is a danger of head injuries from falling objects.

FSA 90 R

English

Wear heavy-duty work gloves made of durable material (e.g. leather).

STIHL offers a comprehensive range of personal protective clothing and equipment.

Transporting

Before transporting – even for short distances – always switch off the machine, move the retaining latch to ƒ and remove the battery. This avoids the risk of the motor starting unintentionally.

Carry the unit horizontally and properly balanced by the drive tube.

To reduce the risk of cut injuries, fit transport guard on a metal cutting attachment, even when carrying the tool for short distances.

Transporting by vehicle: Properly secure the power tool to prevent turnover and damage.

Cleaning

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

Always clean dust and dirt off the power tool – do not use any grease solvents for this purpose.

Clean the cooling slots if necessary. Keep the battery guides free from

foreign matter – clean as necessary.

Do not use a pressure washer to clean the unit. The solid jet of water may damage parts of the unit.

Do not spray the power tool with water. Do not spray the cutting attachment or

deflector with water or immerse them in water as this may damage the drive motor and electronic control unit in the motor housing.

Accessories

Only use cutting attachments and accessories that are explicitly approved for this power tool by STIHL or are technically identical. If you have any questions in this respect, consult a servicing dealer. Use only high quality tools and accessories in order to avoid the risk of accidents and damage to the unit.

STIHL recommends the use of genuine STIHL tools and accessories. They are specifically designed to match the product and meet your performance requirements.

Drive

Battery Follow the supplement sheet or User

Manual for the STIHL rechargeable battery and keep them in a safe place.

For further safety instructions, see www.stihl.com/safety-data-sheets Battery charger Observe the supplement sheet for the

STIHL charger and keep in a safe place.

Symbols on Deflectors

An arrow on the deflector shows the correct direction of rotation of the cutting attachments.

Some of the following symbols are applied to the outside of the deflector to indicate the approved combination of cutting attachment and deflector.

Deflector may be used with mowing heads.

Deflector may be used with grass cutting blades.

Deflector must not be used with mowing heads.

Deflector must not be used with grass cutting blades.

Deflector must not be used with brush knives.

FSA 90 R

English

Deflector must not be used with circular saw blades.

Cutting Attachments

To reduce the risk of injury from thrown objects, never operate the power tool without the proper deflector for the type of cutting attachment being used.

The deflector on this power tool cannot protect the operator from all objects thrown by the cutting attachment (stones, glass, wire, etc.). Such objects may ricochet and then hit the operator.

Check the cutting attachment at regular short intervals during operation or immediately if there is a noticeable change in cutting behavior:

– Switch off the motor, move the

retaining latch to ƒ and wait for the cutting attachment to come to a standstill, remove the battery.

– Check condition and tightness, look

for cracks.

To replace the cutting attachment, switch off the power tool, move the retaining latch to ƒ and remove the battery. This avoids the risk of injury from the motor starting unintentionally.

Never continue using or attempt to repair damaged or cracked cutting attachments.

This may cause parts of the cutting attachment to come off and hit the operator or bystanders at high speed and result in serious or fatal injuries.

Using Mowing Heads

Use only the deflector with properly mounted line limiting blade to ensure the mowing lines are automatically trimmed to the approved length.

Before adjusting nylon line on manually adjustable mowing heads, switch off the machine, set retaining latch to ƒ and remove the battery. This avoids the risk of injury from the motor starting unintentionally.

WARNING

To reduce the risk of serious injury, never use wire or metal-reinforced line in place of the nylon line.

Using Metal Cutting Attachments

STIHL recommends the use of original STIHL metal cutting attachments. They are specifically designed to match your model and meet your performance requirements.

Metal cutting attachments rotate at very high speed. The forces that occur act on the machine, the attachment and the material being cut.

Sharpen metal cutting attachments regularly as specified.

Check sharpness. Replace or sharpen dull metal cutting attachments immediately.

Unevenly sharpened metal cutting attachments cause out-of-balance which can impose extremely high loads on the machine and increase the risk of breakage.

Dull or improperly sharpened cutting edges can put a higher load on the metal cutting attachment and increase the risk of injury from cracked or broken parts.

Inspect metal cutting attachments for cracks or warping after every contact with hard objects (e.g. stones, rocks, pieces of metal). To reduce the risk of injury, remove burrs and other visible build-ups of material (use a file) because they may become detached and be thrown at high speed during operation.

Do not continue using or attempt to repair damaged or cracked metal cutting attachments by welding, straightening or modifying the shape (out of balance).

If a rotating metal cutting attachment makes contact with a rock or other solid object there is a risk of sparking which may cause easily combustible material to catch fire under certain circumstances. Dry plants and scrub are also easily combustible, especially in hot and dry weather conditions. If there is a risk of fire, do not use metal cutting attachments near combustible materials, dry plants or scrub. Always contact your local forest authority for information on a possible fire risk.

To reduce the above-mentioned risks when using a metal cutting attachment, never use a metal cutting attachment with a diameter larger than specified. It must not be too heavy. It must be manufactured from materials of adequate quality and its geometry must be correct (shape, thickness).

FSA 90 R

English

15m (50ft)

To reduce the risk of injury, a metal cutting attachment not manufactured by STIHL must not be heavier, thicker, have a different shape or a diameter larger than the largest metal cutting attachment approved by STIHL for this power tool model.

Before Starting Work

Check that your power tool is properly assembled and in good condition – refer to appropriate chapters in the instruction manual.

– The trigger and trigger lockout must

move freely and spring back to the idle position when they are released.

– Use only an approved combination

of cutting attachment, deflector and handle. All parts must be assembled properly and securely.

– Check that the cutting attachment is

properly and securely mounted and in good condition.

– Check protective devices (e.g.

deflector for cutting attachment, rider plate) for damage or wear. Always replace damaged parts. Do not operate your machine with a damaged deflector or worn rider plate (lettering and arrows no longer legible).

– Never attempt to modify the controls

or safety devices in any way.

– Keep the handles dry and clean –

free from oil and dirt – for safe control of the power tool.

– Check contacts in battery

compartment for foreign matter.

– Fit the battery correctly – it must

engage audibly.

– Never use defective or deformed

batteries.

To reduce the risk of accidents, do not operate the unit if it is not properly assembled and in good condition.

Switching On

Before switching on your power tool, make sure the cutting attachment is not touching the ground or any other object.

To reduce the risk of injury, avoid contact with the cutting attachment.

Note that the cutting attachment continues to run for a short period after the power tool is switched off – flywheel effect.

During Operation

In case of imminent danger or in an emergency, switch off the motor immediately, move retaining latch to ƒ and remove the battery.

This power tool may be used in the rain and wet. Dry off your power tool after finishing work.

Do not leave the power tool outdoors in the rain.

Take special care in slippery conditions (ice, wet ground, snow), on slopes or uneven ground.

Watch out for obstacles: Roots and tree stumps which could cause you to trip or stumble.

Inspect the work area: Stones, pieces of metal or other solid objects may be thrown more than 15 meters and cause personal injury or damage the cutting attachment and property (e.g. parked vehicles, windows).

The cutting attachment may catch and fling objects a great distance and cause injury - therefore, do not allow any other persons within a radius of 15 meters of your own position. To reduce the risk of damage to property, also maintain this distance from other objects (vehicles, windows). Even maintaining a distance of 15 meters or more cannot exclude the potential danger.

To reduce the risk of accidents, take a break in good time to avoid tiredness or exhaustion.

Work calmly and carefully – in daylight conditions and only when visibility is good. Stay alert so as not to endanger others.

Special care must be taken when working in difficult, over-grown terrain.

The dust that occurs during operation may be harmful to health. If dust levels are very high, wear a suitable respirator.

FSA 90 R

English

0208BA006 KN

Clean grass and plant residue off the cutting attachment mounting at regular intervals – remove any build up of material from the cutting attachment and deflector.

Before leaving the power tool unattended: Always switch off the power tool, set the retaining latch to ƒ and remove the battery.

If your power tool is subjected to unusually high loads for which it was not designed (e.g. heavy impact or a fall), always check that it is in good condition before continuing work – see also "Before Starting Work". Make sure the safety devices are working properly. Do not continue operating your power tool if it is damaged. In case of doubt, consult your servicing dealer.

Always hold the power tool firmly with both hands on the handles.

Make sure you always have good balance and secure footing.

Models with loop handle

Right hand on control handle, left hand on loop handle, even if you are lefthanded.

After Finishing Work

Switch off the power tool, move retaining latch to ƒ and remove the battery.

Storing

When the power tool is not in use, store it so that it does not endanger others. Secure it against unauthorized use.

Store the machine in a dry, locked location with the retaining latch on ƒ and the battery removed.

Vibrations

This power tool minimizes the vibrations transmitted to the operator's hands.

However, the operator should seek medical advice in the event of suspected circulatory problems in the hands (e.g. tingling sensation in the fingers).

Maintenance and Repairs

Always move the retaining latch to ƒ and remove the battery before carrying out any repairs or maintenance work on the power tool. This avoids the risk of the motor starting unintentionally.

Service the machine regularly. Do not attempt any maintenance or repair work not described in the instruction manual. Have all other work performed by a servicing dealer.

STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer. STIHL dealers are

regularly given the opportunity to attend training courses and are supplied with the necessary technical information.

Only use high-quality replacement parts in order to avoid the risk of accidents and damage to the unit. If you have any questions in this respect, consult a servicing dealer.

STIHL recommends the use of genuine STIHL replacement parts. They are specifically designed to match your model and meet your performance requirements.

Never attempt to modify your power tool in any way since this will increase the risk of personal injury.

Check the electrical contacts and ensure that the insulation of the connecting cords and plug of the charger show no sign of aging (brittleness).

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

Check tightness of mounting screws on safety devices and the cutting attachment and retighten if necessary.

FSA 90 R

English

002BA135 KN

3988BA000 KN

Reactive Forces

Risk of Kickout (Blade Thrust) with Metal Cutting Attachments

WARNING

When using metal cutting attachments there is a risk of kickout when the rotating blade comes into contact with a solid object such as a tree trunk, branch, tree stump, rock or similar. The machine is thrown to the right or to the rear – opposite to the attachment's direction of rotation.

Working Techniques

Mowing Head with Nylon Line

Nylon line mowing heads are suitable for lawn edging and trimming small to medium areas and around obstacles. The working technique is described below, see "Mowing".

The mowing head comes with an instruction leaflet. Refill the mowing head with nylon line as described in the instruction leaflet.

Working with Bump Guard The bump guard is available as a special

accessory.

come to a standstill before adjusting the bump guard – do not adjust it with your foot.

Grass Cutting Blade

Grass cutting blades are suitable for cutting tough grass, weeds. fern, stinging nettles and reed. They are robust and can be used for mowing large areas. The working technique is described below, see "Mowing".

WARNING

Improper use may damage the grass cutting blade – risk of injury from thrown parts.

Resharpen the grass cutting blade according to instructions when it has dulled noticeably.

The risk of kickout is greatest when the black area of the rotating cutting attachment comes into contact with a solid object.

The bump guard (1) – limits the cutting range of the

mowing line

– reduces the risk of the rotating

mowing line causing damage (e.g. tree bark)

WARNING

The mowing head may continue to rotate briefly after you switch off your power tool – wait for the mowing head to

FSA 90 R

Mowing

002BA341 KN

N Hold your trimmer with both hands –

right hand on the control handle.

N Stand upright – hold the power tool

in a relaxed position.

N Make sure the cutting attachment is

not touching the ground or any other objects.

N Swing the trimmer back and forth in

an arc.

N The cutting height is determined by

the distance of the mowing line from the lawn surface.

N Avoid contact with fences, walls,

rocks, etc. since it will result in a higher rate of wear.

Do not throw cuttings in the garbage can. They can be composted.

English

FSA 90 R

English

Approved Combinations of Cutting Attachment, Deflector, Handle and Harness

Cutting attachment Deflector Handle Carrying strap

Permissible combinations

Choose the correct combination from the table depending on the cutting tool!

WARNING

For safety reasons only the cutting attachments, deflector, handle and harness versions within one line of the table may be combined with one

another. No other combinations are permitted because of the risk of accidents.

Cutting attachments

Mowing heads 1 STIHL SuperCut 20-2

2 STIHL AutoCut 25-2 3 STIHL DuroCut 20-2

Metal cutting tools 4 Grass cutting blade 230-2

(230 mm dia.)

Operate the mowing head only with

2.4 mm diameter (0.095 in) round, quiet mowing line

0000-GXX-0408-A1

FSA 90 R

English

3988BA034 KN

3988BA030 KN

3988BA007 KN

5 Grass cutting blade 260-2

(260 mm dia.)

6 Grass cutting blade 230-4

(230 mm dia.)

7 Grass cutting blade 230-8

(230 mm dia.)

WARNING

Grass cutting blades of materials other than metal must not be used.

Deflectors

8 Deflector with line limiting blade 9 Deflector without line limiting blade

Handles

10 Loop handle 11 Loop handle with 12 Barrier bar

Shoulder straps

13 Shoulder strap can be used 14 Full harness can be used 15 Harness for Type AR battery may

be used together with

16 padding (special accessory) See chapter "Fitting the Harness"

Mounting the Loop Handle

Using the Barrier Bar

A barrier bar may have to be mounted to suit the cutting attachment you intend to use – see "Approved Combinations of Cutting Attachment, Deflector, Handle and Harness".

The barrier bar comes standard with the machine or is available as a special accessory.

Mounting Loop Handle with Barrier Bar

N Place the clamp (3) in the loop

handle (4) and position them both against the shaft (5).

N Position the clamp (6) against the

shaft.

N Place the barrier bar (2) in position

as shown.

N Line up the holes. N Insert the screws (7) in the holes

and screw them into the barrier bar (2) as far as stop.

N Go to "Adjusting and Securing the

Loop Handle".

FSA 90 R

N Fit the square nuts (1) in the barrier

bar (2); the holes must line up.

English

7 8

3988BA001 KN

3988BA029 KN

3988BA008 KN

3988BA009 KN

Mounting the Loop Handle without Barrier Bar

N Place the clamp (3) in the loop

handle (4) and position them both against the shaft (5).

N Position the clamp (6) against the

shaft.

N Line up the holes. N Fit washers (8) on the screws (7)

and insert the screws in the holes. Fit the square nuts (1) and screw them down as far as stop.

N Go to "Adjusting and Securing the

Loop Handle".

Adjusting and Securing the Loop Handle

The loop handle can be adjusted to suit the height and reach of the operator and the application by changing distance (A).

Distance A when using mowing heads: Max. 30 cm (12 in)

Distance A when using metal cutting attachments: Max. 25 cm (10 in)

N Slide the handle to the required

position.

N Line up the loop handle (4). N Tighten down the screws until the

loop handle can no longer be rotated on the shaft. If no barrier bar is fitted – lock the nuts if necessary.

Mounting the Deflector

Use the Right Deflector

WARNING

Deflector (1) is approved for mowing heads only and must therefore be mounted before fitting a mowing head

WARNING

Deflector (2) is approved for grass cutting blades only and must therefore be mounted before fitting a grass cutting blade.

Mounting the Deflector

Deflectors (1 and 2) are both mounted to the motor housing in the same way.

FSA 90 R

English

3988BA010 KN

3988BA028 KN

3988BA011 KN

3988BA012 KN

3988BA013 KN

N Position the deflector against the

motor housing.

N Push hooks (3) on deflector into the

recesses in the motor housing.

N Insert the screw (4) and tighten it

down firmly.

Mounting the Cutting Attachment

Placing Power Tool on the Ground

N Move the retaining latch to ƒ and

remove the battery.

N Position your power tool so that the

cutting attachment mounting face is pointing up.

Mounting the Fanwheel

The machine comes standard with a fanwheel.

Mounting Hardware for Cutting Attachments

The mounting hardware supplied depends on the cutting attachment that comes as original equipment with the new machine.

Machine supplied without mounting hardware

Only mowing heads may be used which mount directly to the shaft (2).

Machine supplied with mounting hardware

Mowing heads and metal cutting attachments may be mounted.

FSA 90 R

N Push the fanwheel (1) onto the

shaft (2).

NOTICE

The fanwheel is necessary for mounting cutting attachments.

Depending on the cutting attachment, it may be necessary to use the nut (3), rider plate (4) and thrust washer (5).

These parts are included in a kit supplied with the machine and are also available as special accessories.

English

3988BA014 KN

3988BA015 KN

681BA050 KN

Blocking the Shaft

The output shaft (2) must be blocked with the stop pin (6) to mount or remove cutting attachments. The stop pin is included with the machine and is available as a special accessory.

N Push the stop pin (6) into the

hole (7) in the motor housing.

N Rotate the shaft, nut or cutting

attachment to line up the hole in the fanwheel (1) with the stop pin (6).

N Push the stop pin (6) home until its

end is level with the blades on the fanwheel (1).

The shaft is now blocked.

Mounting the Cutting Attachment

WARNING

Use a deflector that matches the cutting attachment – see "Mounting the Deflector".

Fitting Mowing Head with Screw Mounting

Keep the instruction leaflet for the mowing head in a safe place.

N Screw the mowing head

counterclockwise on to the shaft (2) as far as stop.

N Blocking the shaft N Tighten down the mowing head

firmly.

NOTICE

Remove the tool used to block the shaft.

Remove the mowing head.

N Block the shaft. N Unscrew the mowing head

clockwise.

Mounting the Metal Cutting Attachment

Keep the leaflet and packaging of the metal cutting attachment in a safe place.

WARNING

Wear protective gloves to reduce the risk of direct contact with the sharp cutting edges.

Mount only one metal cutting attachment.

Check direction of rotation of cutting attachment

The cutting edges of the grass cutting blades (1) and (2) may point in either direction – these cutting attachments must be turned over regularly to reduce one-sided wear.

Cutting edges of grass cutting blade (3) must point clockwise.

WARNING

Direction of rotation is indicated by an arrow on the inside of the deflector.

FSA 90 R

English

3988BA016 KN 3901BA015 KN

3901BA019 KN

N Place the cutting attachment (4) on

the fanwheel (5).

WARNING

Collar (see arrow) must engage the cutting attachment's mounting hole.

Securing the cutting attachment N Fit the thrust washer (6) – convex

side must face up.

N Fit the rider plate (7). N Block the shaft (8). N Screw the mounting nut (9) on to the

shaft counterclockwise and tighten it down firmly.

WARNING

If the mounting nut has become too loose, fit a new one.

FSA 90 R

NOTICE

Remove the tool used to block the shaft.

Removing the Metal Cutting Attachment

WARNING

Wear protective gloves to reduce the risk of direct contact with the sharp cutting edges.

N Block the shaft. N Unscrew the mounting nut

clockwise.

N Take the cutting attachment and its

mounting hardware off the fanwheel (5) – but do not remove the fanwheel.

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 1 second, then red and goes off again.

English

3901BA009 KN

3901BA014 KN

Charging the Battery

A factory-new battery is not fully charged.

Recommendation: Fully charge the battery 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 enclosed and dry rooms at ambient temperatures between +5°C to +40°C (+41°F to +104°F)

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

N Push the battery (1) into the

charger (2) until noticeable resistance is felt – then push it as far as stop.

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".

The charge time is dependent 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

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 transfer to 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.

The AL 300 and AL 500 chargers are equipped with a battery cooling fan

FSA 90 R

English

3901BA010 KN

3901BA018 KN

80 - 100 %

60 - 80 %

40 - 60 %

20 - 40 %

0 - 20 %

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 in the battery or machine.

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

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

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

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

N Press button (1) to activate the

display – the display goes off automatically after 5 seconds.

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

FSA 90 R

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

English

3901BA041 KN

3901BA019 KN

If the red LEDs glow continuously / flash

A 1 LED glows

continuously

Battery is too hot

1) 2)

/cold

red:

B 4 LEDs flash

C 3 LEDs glow

D 3 LEDs flash

red

continuously red:

red

When charging: Charge process

Malfunction in battery

Machine is too hot – allow it to cool down.

Malfunction in machine

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

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

Electromagnetic problem or fault. Take the battery out of the machine

LED on Charger

tool and refit it. Switch on the machine – if the LEDs continue to flash, the battery is faulty and must be replaced.

Electromagnetic problem 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 machine – if the light emitting diodes still flash, the machine is faulty 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

Stihl STIHL FSA 90 R STIHL FSA 90 R (en / fr) [en, fr]

Specifications and Main Features

Frequently Asked Questions

User Manual