FS 160, FS 220, FS 280, FS 290
English
89
At temperatures below +10°C
Fit cover plate 4119 007 1022 (special
accessory) on the starter cover. This
causes heated air to be drawn in from
around the cylinder.
The cover plate comes with illustrated
fitting instructions.
Important:
To avoid engine running problems,
always remove the cover plate when the
outside temperature rises above + 10°C.
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 Remove the mounting screws (1)
from the shroud (2).
N Remove the shroud (2).
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.
Winter Operation
Spark Plug
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