Spark Plug - Stihl MS 260 Instruction Manual

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 Master Control lever to the
stop position (0).
2
1
N Turn the twist lock (1) above the
rear handle 90° counterclockwise.
N Lift off the carburetor box cover (2)
vertically.
MS 260, MS 260 C
3
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.
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
N Screw home the spark plug, fit the
boot and press it down firmly.
N Fit the carburetor box cover.
A
English
1
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