Stihl RMA 370 User manual

{
STIHL RMA 370 Instruction Manual
Notice d’emploi

GInstruction Manual
1 - 27
FNotice d’emploi
28 - 56

Original Instruction ManualPrinted on chlorine-free paper
Printing inks contain vegetable oils, paper can be recycled.
© ANDREAS STIHL AG & Co. KG, 2017 0458-702-8221-B. VA0.G17. 0000005230_012_GB
RMA 370
English
1
{This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process
with electronic systems.
Contents
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 troublefree use of
the product.
Please contact your dealer or our sales
company if you have any queries
concerning this product.
Your
Dr. Nikolas Stihl
Guide to Using this Manual 2
Safety Precautions and Working
Techniques 2
Using the Unit 7
Mulching 8
Mounting the Handlebar 8
Grass Box 9
Adjusting Cutting Height 10
Connecting Charger to Power
Supply 11
Charging the Battery 11
LEDs on battery 12
Light Emitting Diodes (LED) on
Charger 14
Switching On 14
Switching Off 15
Storing the Machine 17
Inspection and Maintenance by
User 17
Sharpening Instructions 18
Maintenance and Care 21
Main Parts 22
Specifications 23
Troubleshooting 25
Maintenance and Repairs 27
Battery Recycling 27
Disposal 27

RMA 370
English
2
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.
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.
Notes on Usage
Use the power tool only for mowing
grass.
Do not mow wet grass.
It must not be used for any other
purpose because of the increased risk of
accidents and damage to the machine.
Never attempt to modify the product in
any way since this may result in
accidents or damage.
General Notes
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.
If you have not used this model before:
Have your dealer or a trained expert
show you how to operate it properly and
safely.
Minors should never be allowed to use
this product.
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.
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.
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.
Clothing and Equipment
Wear proper protective clothing and
equipment.
Guide to Using this Manual
Key for locking and
unlocking
Safety Precautions and
Working Techniques
Some special safety pre-
cautions have to be
observed when working
with this power tool
because of the very high
speed of the cutting
blade.
It is important that you
read the instruction man-
ual before first use and
keep it in a safe place for
future reference. Non-
observance of the
instruction manual may
result in serious or even
fatal injury.
Clothing must be sturdy
but allow complete free-
dom of movement. Wear
long pants.

RMA 370
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3
Avoid clothing that could get caught in
scrub 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, etc.).
WARNING
Hearing protection is recommended,
e.g. earplugs or ear muffs.
STIHL offers a comprehensive range of
personal protective clothing and
equipment.
The Power Tool
Never attempt to modify your machine 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.
Transporting the Power Tool
Always switch off the machine, wait for
the cutting blade to come to a complete
standstill, remove the fuse key and
battery – even when you transport the
machine short distances. This avoids
the risk of the motor starting
unintentionally.
Lift your power tool by the carrying grips
only. The cordless lawn mower can be
carried in two ways:
–One hand on the upper carrying grip
and one hand on the lower carrying
grip.
–One hand on the upper carrying
grip.
Always keep the cutting blade well away
from your body, especially your feet and
legs.
Transport the power tool only after the
motor has cooled down.
Transporting by vehicle: Properly secure
your power tool and its parts (e.g.
grassbox) to prevent turnover and
damage. Attach ropes or straps to the
handles.
Cleaning the Power Tool
Do not use a pressure washer to clean
your power tool. The solid jet of water
may damage parts of the power tool.
Do not spray the power tool with water.
Storing the Power Tool
When the power tool is not in use, store
it so that it does not endanger others.
Secure it against unauthorized use.
Accessories and Spare Parts
Only use cutting blades and accessories
that are explicitly approved for this
power tool by STIHL. 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
machine.
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
Observe the information in the leaflet or
instruction manual supplied with the
STIHL battery and keep it in a safe
place.
For further notes on safety see
www.stihl.com/safety-data-sheets
Charger
Observe the information in the leaflet
supplied with the STIHL charger and
keep it in a safe place.
Wear sturdy shoes with
non-slip soles.
To reduce the risk of eye
injuries, wear snug-fitting
safety glasses in accord-
ance with European
Standard EN 166. Make
sure the safety glasses
are a good fit.
Wear heavy duty gloves
when transporting the
machine and carrying out
work on the cutting blade.
9929BA031 KN

RMA 370
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4
Notes on Operation
and
before
–carrying out inspections,
adjustments or cleaning work
–performing any work on the cutting
blade
–leaving the machine unattended
–Transport
–before storing the machine
–before performing repairs and
maintenance work
–in the event of danger or in an
emergency
This avoids the risk of the motor starting
unintentionally.
Before Starting Work
Check that your power tool is properly
assembled and in good condition – refer
to appropriate chapters in the instruction
manual.
–The switch lever and switch lever
lockout must move freely and return
to the idle position when they are
released.
–Switch lever locked in position when
switch lever lockout is not
depressed.
–Check that the cutting blade is
properly and securely mounted and
in good condition.
–Inspect the power tool for damage
or wear. Always replace damaged
parts.
–Do not use your power tool if safety
devices are damaged, the coasting
brake does not operate or safety
devices are not mounted (e.g.
ejection chute shield).
–Never use your machine with a
damaged grassbox.
–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 your power tool if it is not
properly assembled and in good
condition.
Switching on the machine
Start the machine on a flat surface. Do
not tilt the machine when you switch on
the motor.
Do not switch on the machine in high
grass or with the cutting height set to the
lowest level.
Operate the machine only with the
battery compartment closed.
During Operation
Make sure you always have good
balance and secure footing.
In case of imminent danger or in an
emergency, switch off the power tool
immediately, remove the fuse key and
the battery.
To reduce the risk of injury from thrown
objects, do not allow any other persons
within a radius of 5 meters of your own
position. To reduce the risk of damage
to property, also maintain this distance
from other objects (vehicles, windows).
Remove the fuse key
take the battery out of the
machine
5 m (16 ft)

RMA 370
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5
Do not mow at outside temperatures
below +5°C.
Do not leave the power tool outdoors in
the rain.
Take special care in slippery conditions
on slopes and uneven ground.
Do not mow extremely steep slopes. To
reduce the risk of injury, do not operate
your machine on slopes with a gradient
of more than 25°.
Mow parallel to the slope, never up or
down. Take particular care when
changing direction on slopes.
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.
Watch out for obstacles: Tree stumps,
roots, especially when moving
backwards and pulling the machine –
risk of stumbling.
Work calmly and carefully – in daylight
conditions and only when visibility is
good. Stay alert so as not to endanger
others.
To reduce the risk of accidents, take a
break in good time to avoid tiredness or
exhaustion.
Be particularly alert and cautious when
wearing hearing protection because
your ability to hear warnings (shouts,
alarms, etc.) is restricted.
The dust that occurs during operation
may be harmful to health. If dust levels
are very high, wear a suitable respirator.
Avoid contact with electrical cables or
wires – risk of electric shock.
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.
Check the cutting attachment at regular
short intervals during operation or
immediately if there is a noticeable
change in cutting behavior:
–Switch off the machine, allow
cutting blade to come to a complete
standstill, remove the fuse key and
the battery.
–Check condition and tightness, look
for cracks.
In the event of contact with foreign
matter, check the cutting blade for signs
of damage. Do not operate your power
tool with a damaged or bent blade shaft
or motor shaft.
If the cutting blade becomes obstructed,
or if there is a blockages in the ejection
chute or in the area of the cutting blade,
immediately switch off the motor, allow
the cutting attachment to come to a
complete standstill, remove the fuse key
and the battery. Rectify the cause of the
problem.
Do not overload your machine during
operation to a point where the motor
slows down. If motor speed begins to
slow, select a higher cutting height or
reduce the feed rate.
Keep hands and feet well
clear of rotating parts and
do not touch the rotating
cutting attachment. To
reduce the risk of injury,
always maintain the dis-
tance from the ejection
chute that is defined by
the handlebar.
Do not touch the cutting
blade while the motor is
running. Never open the
ejection chute shield or
remove the grassbox
while the motor is run-
ning. There is otherwise a
risk of injury from the
rotating cutting blade.
Protect from rain – do not
immerse in fluids.
Inspect the work area:
Stones, pieces of metal
or other solid objects can
be thrown and cause per-
sonal injury or damage
the cutting blade and
property (e.g. parked
vehicles, windows).

RMA 370
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6
If the motor is thermally overloaded
during operation, it cuts out
automatically and must cool down
before it is restarted. Causes of
overload:
–Mowing overlong grass or at too low
a cutting height
–Feed speed too high
–Cooling air slots dirty
Switching the machine on and off
frequently within a short period may
cause the motor to overheat.
Do not attach objects to the handlebar.
The machine must not be used for
transporting persons, particularly
children, or objects.
After Finishing Work
Before leaving the power tool
unattended: Switch off the motor,
remove the fuse key and battery.
Note that the cutting attachment
continues to run for a short period after
the power tool is switched off – flywheel
effect. The machine is equipped with a
coasting brake. The coasting brake
shortens the time required for the blade
to come to a standstill – see also
"Switching Off".
Allow power tool to cool down
completely.
Always clean dust and dirt off the power
tool – do not use any grease solvents for
this purpose.
Holding and Controlling the Power Tool
The machine is operated by one person
only – do not allow other persons,
especially children, or animals in the
work area.
Always hold the handlebar firmly with
both hands.
Operate the machine at walking pace
only – never run.
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 remove the fuse key and battery
from the power tool before carrying out
any repairs or maintenance work. 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.
Regularly check the electrical contacts
and ensure that the insulation of the
connecting cord and plug of the charger
is in good condition and shows no sign
of ageing (brittleness).
Electrical components, e.g. connecting
cord of charger, may only be repaired or
replaced by a qualified electrician.
9929BA045 KN

RMA 370
English
7
Clean plastic surfaces with a cloth. Do
not use aggressive detergents. They
may damage the plastic.
Check tightness of mounting screws, on
the cutting attachment in particular, and
retighten if necessary.
Clean cooling air openings in motor
housing as necessary.
Keep the battery guides free from
foreign matter – clean as necessary.
Replace illegible or damaged warning
labels on the power tool.
Store the power tool in a dry, locked
location with the fuse key and battery
removed.
Mowing
A beautiful and dense lawn is obtained
by frequent mowing.
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 collected in the grass
box or ejected to the rear.
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!
Using the Unit

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8
Mulch Kit
The mulch kit, consisting of a mulching
blade, blade mounting screw and mulch
plug, converts the conventional mower
into a multi-purpose mower. The normal
mowing blade is replaced by a mulching
blade.
During mowing, clippings can be
collected in the grass box in the usual
way. Alternatively, the grass box can be
removed and the rear ejection chute
used. For mulching, the grass box is
removed and the mulch plug fitted, see
instruction sheet supplied with mulch kit.
Mulching
In the mulching mode, the grass
clippings are recirculated in the
airstream, recut several times and then
blown back onto the lawn. The fine
clippings remain on the lawn surface
where they decompose quickly and
serve as a natural fertilizer. Frequent
mulching produces a beautiful, dense
lawn. One third of the grass height
should be cut in this process.
Recommendation: Mulch at least twice a
week in spring and at least once a week
in summer/autumn.
Mulching Result
Prerequisites for a good mulching result:
–Optimum cutting height (between
setting 3 and 5)
–Lawn should be dry
–Use properly sharpened blades
–Low mowing speed
–Vary mowing direction and overlap
the cuts
–Mow very high grass in gradual
stages
The housing can become clogged and
block the blade if the cutting height is too
low or the grass is wet.
Replacing the Blade
Blade replacement and maintenance –
see "Sharpening the Cutting Blade".
Mounting Upper Handlebar
NInsert screw (1) through the cable
guide (2) and attach the electric
cable (3).
NPosition the upper handlebar (4) on
the lower handlebar (5).
NInsert screw with cable guide and
screw (6) through the holes from the
inside outwards and secure them
with the star knob (7).
Cable Clip
The electric cable is secured to the
upper handlebar with a cable clip.
Mulching Mounting the Handlebar
1
3
2
9929BA001 KN
6
5
9929BA002 KN
4
7

RMA 370
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9
NThe distance (a) between the cable
clip and switch lever lockout must
be about 25 cm.
Folding the Handlebar Down
WARNING
The upper handlebar can fold over when
the star knobs are loosened – to reduce
the risk of injury, always hold the top of
the upper handlebar firmly when
loosening the star knobs.
The handlebar can be folded down to
clean, transport or store your cordless
lawn mower.
NLoosen the star knobs (1) and fold
the upper handlebar (2) forwards as
far as the braces (3) – do not
unscrew the star knobs.
NThe upper handlebar must rest on
the braces (3).
Assembling the Grassbox
NPlace the cover (1) on the base (2)
of the grassbox – note correct
position of guides (arrows).
NPush the pins (3) through the holes
from inside until they snap into
position.
NApply light pressure to engage the
cover (1) on the base (2).
9929BA003 KN
a
3
3
1
1
9929BA004 KN
2
9929BA030 KN
3
3
Grass Box
1
9929BA005 KN
2
33
9929BA006 KN
9929BA007 KN
1
2

RMA 370
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10
Attaching the Grassbox
NOpen the flap (1) and hold it in
position.
NEngage the lugs (3) of the grassbox
(2) in the recesses (4) on the back of
the mower.
NClose the flap (1).
Full Indicator
The grassbox is equipped with a 'full'
indicator (1).
The 'full' indicator is lifted up by the
airstream created by the rotating cutting
blade. The grassbox fills up with
cuttings as mowing progresses. This
reduces the airstream and the 'full'
indicator drops.
Emptying the Grassbox
NSwitch off the machine.
NOpen the flap (1) and hold it in
position.
NLift the grassbox (2) and remove it
to the rear.
NClose the flap (1).
NOpen the grassbox lock (3) and
swing the cover (4) open.
NHold the grassbox by the carrying
grips (5) and empty it.
Different cutting heights can be set.
Level S is only available in some
countries.
NOTICE
To avoid damaging the machine, only
use the smallest cutting height on lawns
where there is no unevenness.
4
4
13
9929BA033 KN
2
9929BA034 KN
1
1
9929BA035 KN
2
5
3
5
4
9929BA011 KN
4
Adjusting Cutting Height
Level Cutting
height
S20 mm
130 mm
240 mm
350 mm
460 mm
570 mm
9929BA051 KN

RMA 370
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11
Setting the cutting height
NPush the height adjustment
lever (1) slightly away from the
cordless lawn mower until the snap
fittings (2) release the lever.
Greater cutting height:
NLift the cordless lawn mower with
the height adjustment lever (1) – the
lever is pushed forwards
Smaller cutting height:
NPush the cordless lawn mower
down with the height adjustment
lever (1) – the lever is pushed
backwards
NPush the height adjustment
lever (1) towards the cordless lawn
mower until the snap fittings (2)
engage in the lever.
The selected cutting height is shown on
the front snap fitting (3).
Power supply (mains) voltage and
operating voltage must be the same.
NInsert 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.
A factory-new battery is not fully
charged.
Recommendation: Fully charge the
battery before using it for the first time.
NConnect 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.
NPush the battery (1) into the
charger (2) until noticeable
resistance is felt – then push it as far
as stop.
1
3
2
9929BA049 KN
Connecting Charger to
Power Supply
3901BA015 KN
2
1
1
3901BA019 KN
Charging the Battery
2
3901BA009 KN

RMA 370
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12
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
The AL 300 and AL 500 chargers are
equipped with a battery cooling fan
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.
Four LEDs show the battery's state of
charge and any problems that occur on
the battery or power tool.
NPress button (1) to activate the
display – the display goes off
automatically after 5 seconds.
The LEDs can glow or flash green or
red.
4
3901BA014 KN
3
LEDs on battery
LED glows continuously green.
LED flashes green.
LED glows continuously red.
LED flashes red.
1
3901BA010 KN

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13
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.
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
red – see "If the red LEDs glow
continuously / flash".
If the red LEDs glow continuously / flash
3901BA018 KN
80 - 100 %
60 - 80 %
40 - 60 %
20 - 40 %
0 - 20 %
3901BA016 KN
80 - 100 %
60 - 80 %
40 - 60 %
20 - 40 %
0 - 20 %
A1LED glows
continuously
red:
Battery is too
hot1) 2)/cold1)
1) When charging: Charge process
starts automatically after the battery
has cooled down / warmed up.
2) 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.
B 4 LEDs flash
red
Malfunction in
battery 3)
C 3 LEDs glow
continuously
red:
Power tool is too
hot – allow it to
cool down.
D 3 LEDs flash
red
Malfunction in
power tool 4)
3901BA041 KN
A
B
C
D

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14
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.
When delivered, the battery is not fully
charged.
It is advisable to charge the battery
completely before using it for the first
time.
Insert the battery
Open the battery compartment
NPress the retaining lug (1) slightly in
and fold out the cover (2) to the
back
Insert the locking key
The engine can only be started if the
locking key is inserted.
NPush the locking key (3) as far as it
will go into the base (4)
3) Electromagnetic interference or
fault. Take the battery out of the
power tool and refit it. Switch on the
machine – if the LEDs continue to
flash, the battery has a malfunction
and must be replaced.
4) 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.
Light Emitting Diodes (LED)
on Charger
1
3901BA019 KN
Switching On
9929BA014 KN
2
1
4
3
9929BA015 KN

RMA 370
English
15
Insert the battery
NInsert the battery (5) into the battery
compartment and press in gently
Close the battery compartment
NFold down the cover (2) – the
retaining lug (1) must engage
The battery compartment must always
be closed during operation.
Switching on the machine
Do not start the motor in long grass or in
the lowest cut setting as this makes it
more difficult for the motor to start.
NPress and hold the trigger switch
lockout (1) with the right hand
NPull the switch lever (2) with the left
hand towards the handlebars, and
hold – you can now let go of the
trigger switch lockout
NTo switch off the motor, release the
switch lever (1) – the cutting blade
comes to a standstill after coasting
for a few seconds.
Always remove the battery and fuse key
from the power tool during work breaks
and after finishing work.
9929BA016 KN
5
9929BA017 KN
2
1
1
9929BA018 KN
2
Switching Off
9929BA019 KN
1

RMA 370
English
16
Coasting Brake
The coasting brake brings the cutting
blade to a standstill in less than 3
seconds after the switch lever is
released.
1Coasting brake disengaged.
2Coasting brake stops the rotating
cutting blade.
Removing the Battery
Opening the Battery Compartment
NPress in the tab (1) and swing the
cover (2) to the rear.
Removing the Battery
NPull the battery (3) out vertically.
Removing the Fuse Key
NPull the fuse key (4) out of the
socket (5).
Closing the Battery Compartment
NSwing the cover (2) down – the tab
(1) must snap into position.
When the cordless lawn mower is not in
use, store it so that it does not endanger
others – remove te battery and the fuse
key from the machine.
Secure it against unauthorized use.
9929BA013 KN
2
1
9929BA014 KN
2
1
9929BA028 KN
3
4
5
9929BA029 KN
9929BA017 KN
2
1

RMA 370
English
17
NRemoving the battery
NPull the locking key (1) out of the
base (2) and keep it in a separate
location to the cordless lawn mower
NUnhook the grass box
NAllow the machine to cool down
completely
NThoroughly clean the machine
NOil or grease moving parts
NStore machine in a safe and dry
place. Protect against unauthorized
use (e. g., by children)
Battery storage
NRemove the battery from the
machine or charger
NStore in a closed, dry space and
keep in a secure location. Protect
against unauthorized use (e. g., by
children) and dirt
NDo not store backup batteries
unused – use them in alternation
For optimum service life, store the
battery at a charge of approx. 30 %.
Storing the charger
NRemove the battery
NDisconnect the power plug
NStore charger in a closed, dry space
and keep in a secure location.
Protect against unauthorized use
(e. g., by children) and dirt
Clean the machine thoroughly after each
use. Careful maintenance protects the
machine from damage and extends its
useful life.
Cleaning Position
WARNING
Place your mower on a firm level surface
before standing it on end. The mower
can topple over when it is in the cleaning
position. Always stand to one side of the
mower. To reduce the risk of injury,
never work in front of or behind the
mower.
NRemove the battery and fuse key.
NFold the handlebar down.
Storing the Machine
9929BA020 KN
Inspection and Maintenance
by User

RMA 370
English
18
NStand the mower on end so that it is
supported by the ends of the lower
handlebar (1).
Cleaning the Power Tool
NPut the mower in the cleaning
position.
NClean the cutting blade.
NUse a brush and water to clean the
underside of the mower after
loosening stubborn grass residue
from the housing and ejection chute
with a stick.
NClean dirt from cooling air duct
between motor hood and housing
base.
If dirt cannot be removed with water,
brush or cloth, STIHL recommends you
use a special cleaner (e.g. STIHL
special cleaner).
The type of blade initially supplied with
the mower depends on the market.
1Mowing blade
2Mulching blade
Checking the Blade
NPut the mower in the cleaning
position.
NClean the cutting blade and inspect
it for damage (nicks or cracks) and
wear, replace if necessary.
Always check the mounting screw (1)
when replacing the blade.
WARNING
Replace a damaged mounting screw.
Mowing blade
NUse a caliper gauge to check blade
thickness at a minimum of 5
different points.
NPlace a ruler on the front edge of the
blade and measure how far it has
been filed back.
9929BA021 KN
1
Sharpening Instructions
1
2
9929BA037 KN
1
9929BA022 KN
9929BA040 KN
b
a