Stihl RMA 410 C User manual

{
STIHL RMA 410 C
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.
Instruction Manual
Manual de instrucciones

Instruction Manual
1 - 34
Manual de instrucciones
35 - 69

Original Instruction ManualPrinted on chlorine-free paper
Printing inks contain vegetable oils, paper can be recycled.
© ANDREAS STIHL AG & Co. KG, 2015 0458-715-8621-A. VA1.M15. 0000007229_003_GB
RMA 410 C
English
1
{This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process
with electronic systems.
Contents
Allow only persons who fully understand
this manual to operate your lawn 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 you can
go to www.stihlusa.com.
Contact your STIHL dealer or the STIHL
distributor for your area if you do not
understand any of the instructions in this
manual.
WARNING
Because this lawn mower is a high-
speed cutting tool and is battery-
powered, 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.
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 11
Using the Unit 12
Disposal 13
Mulching 13
Mounting the Handlebar 14
Grass Box 15
Adjusting Cutting Height 16
Connecting Charger to Power
Supply 17
Charging the Battery 17
LEDs on Battery 18
LED on Charger 20
Switching On 20
Switching Off 21
Storing the Machine 22
Inspection and Maintenance by
User 23
Sharpening Instructions 24
Maintenance and Care 27
Main Parts 28
Specifications 29
Troubleshooting 31
Maintenance and Repairs 33
Battery Recycling 33
Trademarks 33
Addresses 34

RMA 410 C
English
2
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.
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:
NA 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:
NLoosen the screw (1).
NLever (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 an imminent risk of severe or
fatal injury.
WARNING
Indicates a hazardous situation which, if
not avoided, could result in severe or
fatal 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 or the STIHL
distributor for your area for assistance.
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 wear-
resistant 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.
Guide to Using this Manual
Key
Important Safety Instructions

RMA 410 C
English
3
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 Idle Lawn Mower Indoors –
When not in use, lawn mower
should be stored in an indoor 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:
NStop lawn mower. Release switch
lever.
NRemove fuse key and battery.
NInspect for damage.
NHave any damage repaired by an
authorized service facility before
restarting and operating the lawn
mower.
19. Use identical replacement blades
only.
SAVE THESE INSTRUCTIONS
Have your STIHL dealer show you how
to operate your lawn mower. 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.
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.
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.

RMA 410 C
English
4
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 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 housing 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. Avoid discharging
material against a wall or obstruction.
Avoid loose-fitting jackets, scarfs,
neckties, jewelry, flared or cuffed pants,
unconfined long hair or anything that
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.

RMA 410 C
English
5
could become caught on branches,
brush or the moving parts of the mower.
Secure hair so it is above shoulder level.
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 and expressly approved 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 the 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
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 inert absorbent to
absorb spilled liquids.
WARNING
Use STIHL batteries only with STIHL
power tools, and charge them only with
STIHL chargers. Replace the battery
with STIHL batteries only. Use only
genuine STIHL rechargeable batteries.
Use of unauthorized batteries can
damage the mower and result in fire,
explosion and personal injury and
property damage.
Charge the battery before use.
WARNING
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
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.
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.
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.
Do not immerse the bat-
tery in fluids. To reduce
the risk of corrosion and
damage to the battery
and power tool, never
leave a wet battery in the
power tool after use -
allow both to dry
separately.

RMA 410 C
English
6
contains safety features and devices
which, if damaged, may cause the
battery to generate heat, rupture or
ignite or explode. Never use or charge a
defective, damaged, cracked, deformed
or leaking battery.
Immediately discontinue use of the
battery if, while using, charging or
storing, it emits an unusual smell, feels
hot or appears abnormal in any other
way.
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 (short circuit) the battery
terminals with metallic objects, since this
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 only genuine STIHL chargers.
Use only for charging geometrically
matching STIHL batteries with a
maximum capacity of 50 Ah and a
maximum voltage of 42 V.
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 neccessary (see
below).
WARNING
Never insert a wet battery into the
charger. Such a battery could cause the
charger to short circuit.
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 outlet
immediately.
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 – risk of fire.
WARNING
Do not operate in a hazardous location,
i.e. in a location where there are
combustible liquids (fumes), vapors or
dusts. Chargers can produce sparks,
which may ignite the dust or vapors –
risk of explosion.
Never use a charger with damaged
housing, damaged power supply cord or
damaged plug. Do not operate the
charger if it has received a sharp blow,
been dropped or otherwise damaged in
any way.
Protect the charger from
rain and dampness. Keep
charger dry.
Use and store the
charger only indoors in
dry rooms.

RMA 410 C
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7
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.
WARNING
Always switch off the mower by
releasing the switch lever, remove the
fuse key and battery – even when you
carry the unit for short distances. When
transporting it in a vehicle, properly
secure the lawn mower and its parts
(e.g. grass box) to prevent turnover and
damage. Use ropes or straps to secure
the handles.
Lift your cordless lawn mower by the
carrying grips only. See illustration
above and illustration in "Main Parts"
chapter. 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 at a safe
distance from your body, especially your
feet and legs.
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.
WARNING
Never operate your lawn mower if it is
damaged, improperly adjusted or
maintained, or not completely or
securely assembled.
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.
Remove the fuse key and
battery from the power
tool. This avoids the risk
of the motor starting
unintentionally.
0000-GXX-0039-A0 KN

RMA 410 C
English
8
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 safe operating
condition. Inspect for loose parts (nuts,
screws, etc.). Regularly check the
condition and tightness of the cutting
blade – with the motor stopped, fuse key
and battery removed! 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 (e.g. ejection chute shield and
lower rear flap).
Inspect the grass box frequently and
replace with an authorized replacement
if there are signs of wear or
deterioration. Never use your mower
with a damaged grass box.
Check contacts in the battery
compartment for foreign matter. Keep
the compartment clean.
Fit the battery correctly.
Operate the mower only with the battery
compartment closed.
WARNING
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. Forestry 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 Power Tool
Always hold the unit firmly with both
hands on the handle bar and switch
lever while you are working. Wrap your
fingers and thumbs around the handle
bar and switch lever when cutting.
Never attempt to operate your power
tool with one hand. Loss of control of the
lawn mower resulting in serious or fatal
injury may result.
WARNING
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
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 solid
objects that could be
thrown by the cutting
blade.
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.

RMA 410 C
English
9
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
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
WARNING
In the event of an emergency, switch off
the motor immediately by releasing the
switch lever and remove the fuse key
and battery.
WARNING
The cutting blade continues to rotate for
a short period after the switch lever is
released (flywheel effect).
WARNING
The rotating cutting blade may fling
foreign objects directly or by ricochet a
great distance. 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.
Mow parallel to the slope,
never up or down. Take
particular care when
changing direction on
slopes.
Keep hands and feet
away from cutting blade.
15 m (50 ft)

RMA 410 C
English
10
Switch off the motor immediately by
releasing the switch lever if you are
approached.
WARNING
Avoid contact with electrical cables or
wires – risk of electric shock.
Operate the mower at walking pace only
– never run.
Always switch off the motor by releasing
the switch lever before wheeling the
mower over surfaces other than grass,
to and from the grassed area, and when
you remove the grass box.
The mower must not be used for
transporting persons, particularly
children, or objects.
Do not attach objects to the handlebar.
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 ejection chute shield or
remove the grass box 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 re-
start 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 ejection
chute 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.
WARNING
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
reduce the feed rate.
Switching the mower on and off
frequently within a short period may
cause the motor to overheat.
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 mow at temperatures below
41 °F (5 °C).
Do not mow wet grass.
Do not leave the mower outdoors in the
rain.
MAINTENANCE, REPAIR AND
STORING
If you make a warranty claim for a
component which has not been serviced
or maintained properly or if
nonapproved replacement parts were
used, STIHL may deny coverage.
Do not rely on the
mower’s insulation
against electric shock. To
reduce the risk of electro-
cution, never operate this
mower in the vicinity of
any wires or cables
(power, etc.) which may
be carrying electric
current.
The drive motor is not
waterproof. Never work
with the lawn mower in
the rain or in wet or very
damp locations.

RMA 410 C
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WARNING
Use only identical STIHL replacement
parts for maintenance and repair,
including the cutting blade. Use of non-
STIHL 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
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
aging.
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 openings 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 mowerin a dry, locked location
with the fuse key and battery removed
and out of reach of children.
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.
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. Have such
work performed by your
STIHL servicing dealer
only.
General Safety Warnings
and Instructions for Battery-
Powered Products

RMA 410 C
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5. When the battery is not in use, keep
it away from other metal objects, like
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
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.
Using the Unit

RMA 410 C
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Disposal
Do not throw cuttings in the garbage can
– they can be composted! Observe all country-specific waste
disposal rules and regulations.
STIHL products must not be thrown in
the garbage can. Take the product,
accessories and packaging to an
approved disposal site for environment-
friendly recycling.
Contact your STIHL servicing dealer for
the latest information on waste disposal.
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.
It is advisable to mulch at least twice a
week in spring and at least once a week
in summer/autumn.
Disposal
000BA073 KN
Mulching

RMA 410 C
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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 the Handlebar Assembly
NPush the bushing (1) into the hole in
the lower handlebar (3).
NPush the left and right cup washers
(2) (convex sides facing handlebar)
onto the bushing in the lower
handlebar (3).
NFit the handlebar (1) in the forked
opening (2).
NInsert the screw (4) through the
holes in the fork, washer and
bushing in the handlebar.
NFit the locknut (3) in the recess in
the fork head.
NTighten down the screw (4) to 20 -
25 Nm.
NFit the cable (1) in the guides on the
fork head.
NSecure the cable (1) to the
handlebar with the cable clip (2).
Folding the Handlebar
The handlebar can be folded down to
clean, transport or store your cordless
lawn mower.
Mounting the Handlebar
0000-GXX-0041-A0 KN
1
2
3
2
3
0000-GXX-0042-A0 KN
2
4
20 - 25 Nm
1
0000-GXX-0043-A1
1
2
0000-GXX-0044-A0 KN

RMA 410 C
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15
WARNING
The upper handlebar can be folded
down by operating the release lever – to
reduce the risk of injury, always hold the
top of the upper handlebar firmly when
you operate the release lever.
NPress the release lever (1) down
and fold the handlebar (2) forwards.
Assembling the Grass Box
NPlace the cover (1) on the base (2)
of the grass box – 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).
Attaching the Grass Box
NOpen the flap (1) and hold it in
position.
NEngage the lugs (3) of the grass
box (2) in the recesses (3) on the
back of the mower.
NClose the flap (1).
2
1
0000-GXX-0045-A0 KN
Grass Box
1
0000-GXX-0046-A0
2
3
3
0000-GXX-0047-A0 KN
1
0000-GXX-0048-A0 KN
2
2
0000-GXX-0049-A0 KN
133

RMA 410 C
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16
Level Indicator
The grass box is equipped with a level
indicator (1).
The level indicator is lifted up by the
airstream created by the rotating cutting
blade. The grass box fills up with
cuttings as mowing progresses. This
reduces the airstream and the level
indicator drops.
Emptying the Grass Box
NSwitch off the machine.
NOpen the flap (1) and hold it in
position.
NLift the grass box (2) and remove it
to the rear.
NClose the flap (1).
NOpen the grass box lock (3) and
swing the cover (4) open.
NHold the grass box by the carrying
grips (5) and empty it.
Different cutting heights can be
selected.
NOTICE
To reduce the risk of damage, use the
lowest cutting height setting only on
perfectly flat lawns (without bumps and
hollows).
1
0000-GXX-0050-A0-KN
2
0000-GXX-0051-A0 KN
1
5
3
5
4
9929BA011 KN
4
Adjusting Cutting Height
Setting Cutting
height
1 30 mm (1 1/8 in)
2 40 mm (1 5/8 in)
350 mm(2in)
4 60 mm (2 3/8 in)
5 70 mm (2 3/4 in)
675 mm(3in.)
0000-GXX-0052-A1 KN

RMA 410 C
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17
Adjusting Cutting Height
NHold the upper carrying grip (1) and
pull lever (2) upwards and keep it in
that position.
Increase cutting height:
NUse the upper carrying grip (1) to
raise the mower.
Reduce cutting height:
NUse the upper carrying grip (1) to
push mower down.
The chosen height setting is indicated
on the scale (3) by the pointer (4).
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.
When delivered, the battery is not fully
charged.
It is advisable to charge the battery
completely 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 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.
NSlide the battery (1) into the
charger (2) until you start to feel
resistance – then push it in until it
engages.
1
3
2
0000-GXX-0053-A1 KN
Connecting Charger to
Power Supply
3901BA015 KN
2
1
1
3901BA019 KN
Charging the Battery
2
3901BA009 KN

RMA 410 C
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18
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.
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