Spark Plug - Stihl FS 510 C Instruction Manual

English
Knock the filter (5) out on the palm
N
of your hand or blow it clear with
compressed air from the inside
outwards.
In case of stubborn dirt or sticky filter
fabric:
Wash the filter in a clean, non-
N
flammable solution (e.g. warm
soapy water) and then dry.
Always replace a damaged filter.
38

Spark Plug

If the engine is down on power,
N
difficult to start or runs poorly at idle
speed, first check the spark plug.
Fit a new spark plug after about 100
N
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
1
Rotate the screw (1) in the cap (2)
N
until the screw head projects from it.
3
Lift the front of the cap (2) and push
N
it to the rear to disengage.
Put the cap to one side.
N
Remove the spark plug boot (3).
N
Unscrew the spark plug.
N
Checking the Spark Plug
Clean dirty spark plug.
N
Check electrode gap (A) and
N
readjust if necessary – see
"Specifications".
Rectify the problems which have
N
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.
FS 510 C, FS 560 C
A
1