33
FR 350, FR 450, FR 480
English
Once the above climatic conditions no
longer apply (higher temperature):
:
Remove the winter ar filter (
2
) and
install the standard air filter (
1
) in its
place.
:
Push shutter (
3
) down into
summer
position
(bottom illustration).
If engine is down on power, difficult to
start or runs poorly at idle speed, first
check the spark plug.
:
Remove the spark plug –
see "Starting / Stopping the Engine".
:
Clean dirty spark plug.
:
Check electrode gap (
A
) and
readjust if necessary – see
"Specifications".
:
Rectify the problems which have
caused fouling of spark plug:
–
To much oil in fuel mix.
–
Dirty air filter.
–
Unfavorable running conditions.
:
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".
To reduce the risk of arcing
and fire:
:
If the spark plug comes with a
detachable adapter nut (
1
), screw it
on
firmly
.
Checking the Spark Plug
000BA002 KN
1
000BA045 KN
Summary of Contents for FR 350
Page 48: ...47 FR 350 FR 450 FR 480 English ...