Instruction Manual

FS 410 C-M K, FS 460 C-M K, FS 490 C-M K
English
29
Depending on the version, the power
tool may be equipped with a handle
heating system.
N Switch on handle heating by moving
the switch (1) on the left handle to Z.
Switch off the heating if the handle
temperature feels too high.
N Move the switch (1) to 0
There is no risk of overheating during
long periods of operation. The heating
system is maintenance-free. Contact
your dealer if you have any problems.
STIHL recommends a STIHL servicing
dealer.
N If the engine is down on power,
difficult to start or runs poorly at idle
speed, first check the spark plug.
N Fit a new spark plug after about 100
operating hours – or sooner if the
electrodes are badly eroded. Install
only suppressed spark plugs of the
type approved by STIHL – see
"Specifications".
Removing the Spark Plug
N Rotate the screw (1) in the cap (2)
until the screw head projects from it.
N Lift the front of the cap (2) and push
it to the rear to disengage.
N Leave the cap to one side.
N Pull off the spark plug boot (3).
N Unscrew the spark plug.
Checking the Spark Plug
N Clean dirty spark plug.
N Check electrode gap (A) and
readjust if necessary – see
"Specifications".
N Rectify the problems which have
caused fouling of the spark plug.
Possible causes are:
– Too much oil in fuel mix.
– Dirty air filter.
– Unfavorable running conditions.
WARNING
Arcing may occur if the adapter nut (1) is
loose or missing. Working in an easily
combustible or explosive atmosphere
may cause a fire or an explosion. This
can result result in serious injuries or
damage to property.
Electric Handle Heating
2709BA020 KN
1
Spark Plug
1
9926BA020 KN
3
9926BA021 KN
000BA039 KN
A
1
000BA045 KN