RMA 510
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 or expressly authorized by STIHL 
for use with the specific STIHL model 
are recommended. Although certain 
unauthorized attachments are useable 
with STIHL power tools, their use may, 
in fact, be extremely dangerous.
If your lawn mower is subjected to 
unusually high loads for which it was not 
designed (e.g. heavy impact or a fall), 
always check that it and the battery are 
in good condition before continuing work 
– see also "Before Starting Work." Make 
sure all safety devices are working 
properly. Do not continue operating your 
lawn mower if it is damaged. In case of 
doubt, have it checked by your STIHL 
servicing dealer.
Battery
WARNING
Do not place the battery on or near fires, 
stoves or in other high-temperature 
locations. Do not place the battery in 
direct sunlight or store it inside a vehicle 
in hot weather. Doing so may cause the 
battery to generate heat, rupture or 
ignite. Using the batteries in this manner 
may also result in a loss of performance 
and a shortened battery life.
In case of fire: stay clear of any vapors 
or gases generated, taking the wind 
direction into account. If possible without 
danger, remove the battery from the 
vicinity of the fire. Cooling the battery or 
extinguishing the fire with ample 
amounts of water may be possible. It is 
preferable, however, to extinguish the 
fire with a multipurpose dry chemical fire 
extinguisher. As for any fire, evacuate 
the area and call the fire authorities. 
Once the fire has been extinguished, the 
area should be monitored (fire watch) in 
case of a flare-up, until the battery has 
cooled sufficiently. Restrict access to the 
area until the completion of clean-up. Do 
not touch the burned battery or any 
spilled liquids. Use an inert absorbent 
such as sand on spilled liquids.
WARNING
Use STIHL AP batteries with this mower. 
Charge only with STIHL AL chargers.
Use of unauthorized batteries can 
damage the mower and result in fire, 
explosion and personal injury and 
property damage.
WARNING
WARNING
Do not open, drop, hit or damage the 
battery. Never insert objects into the 
battery's cooling slots, since they may 
damage the battery. The battery 
contains safety features and devices 
which, if damaged, may cause the 
battery to generate heat, rupture or 
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.
To reduce the risk of per
-
sonal injury or property 
damage from a short cir
-
cuit, fire or explosion, 
keep the battery dry.  
Protect it from rain, water, 
liquids and damp condi
-
tions.  Never immerse the 
battery in water or other 
liquids.