Stihl KM 94 R Instruction Manual page 20

English
3
Unplug spark plug boot (3)
N
Unscrew spark plug
N
Checking the Spark Plug
Clean dirty spark plug.
N
Check electrode gap (A) and
N
readjust if necessary – see chapter
"Specifications."
Use only resistor type spark plugs of
N
the approved range.
Rectify problems which have caused
fouling of spark plug:
too much oil in fuel mix,
–
dirty air filter,
–
unfavorable running conditions, e.g.
–
operating at part load.
18
WARNING
To reduce the risk of fire and burn injury,
A
use only spark plugs authorized by
STIHL. Always press spark plug boot (1)
snugly onto spark plug terminal (2) of the
proper size. (Note: If terminal has
detachable SAE adapter nut, it must be
securely attached.) A loose connection
between spark plug boot and ignition
wire connector in the boot may create
arcing that could ignite combustible
fumes and cause a fire.
Installing the Spark Plug
Fit the spark plug and tighten it
N
down firmly.
Press the boot firmly onto the spark
N
plug.
2
1
Fit the cap (1), insert the screw (2)
N
and tighten it down firmly.
2
1
KM 94 R