Spark Plug - Stihl KM 130 R Instruction Manual

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Spark Plug

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 Move the slide control to STOP-0.
1
N Pull off the spark plug boot (1).
N Unscrew the spark plug.
18
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.
If the spark plug comes with a
detachable adapter nut (1), screw
the adapter onto the thread and
tighten it down firmly to reduce
the risk of arcing and fire.
Installing the spark plug
A
N Screw the spark plug (3) into the
cylinder and fit the boot (2) (press it
down firmly).
1
2
3
KM 110 R, KM 130 R