Checking Spark Plug
Cleaning Air Filter
1
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A
':5
8
..:
1Il
g
o
If
engine
is
down on power, difficult
to
start or runs poorly at idling speed,
first check the spark plug.
• Remove spark plug -
see "If engine doesn't start:"
• Clean dirty spark plug.
• Check electrode gap -
it
should be 0.5 mmlO.020"
(A)
-
readjust
if
necessary.
• Use only suppressed spark plugs
of the approved type.
Rectify faults which have caused
fouling of spark plug:
Incorrect carburetor setting, too much oil
in
fuel mix, dirty air filter, unfavorable
running conditions, e.g. operating at
part load.
• Fit a new spark plug after
approx. 100 operating hours -
or earlier if the electrodes are
badly eroded.
•
If there
is
a noticeable loss
of engine power:
• Set choke lever to
.L -
• Grip tab (2) and pull the
filter cover
(1) off the carburetor.
• Clean away loose dirt from
around the filter.
41
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