FS 510 C, FS 560 C
English
38
N Knock the filter (5) out on the palm
of your hand or blow it clear with
compressed air from the inside
outwards.
In case of stubborn dirt or sticky filter
fabric:
N Wash the filter in a clean, non-
flammable solution (e.g. warm
soapy water) and then dry.
Always replace a damaged filter.
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 Put the cap to one side.
N Remove 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.
Spark Plug
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