Stihl KM 85 R Manual De Instrucciones página 35

14 Spark Plug
14 Spark Plug
► If the engine is down on power, difficult to start
or runs poorly at idle speed, first check the
spark plug.
► 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 "Specifica‐
tions".
14.1 Removing the Spark Plug
► Move the slide control to STOP-0.
► Pull off the spark plug boot (1).
► Unscrew the spark plug.
14.2 Checking the Spark Plug
► Clean dirty spark plug.
► Check electrode gap (A) and readjust if neces‐
sary – see "Specifications".
► Rectify the problems which have caused foul‐
ing of the spark plug.
Possible causes are:
– Too much oil in fuel mix.
– Dirty air filter.
– Unfavorable running conditions.
0458-462-8721-B
1
A
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 inju‐
ries or damage to property.
► Use resistor type spark plugs with a properly
tightened adapter nut.
14.3 Installing the Spark Plug
► Screw the spark plug (3) into the cylinder and
fit the boot (2) (press it down firmly).
15 Storing the Machine
For periods of 30 days or longer
► Drain and clean the fuel tank in a well ventila‐
ted area.
English
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