Stihl FC 75 - Fuel System; Air Filter Maintenance; Carburetor Service; Carburetor Leakage Testing

Dirtyandcloggedairfiltersreduce
enginepower,increasefuelcon-
sumptionandmakestartingmore
difficult.
Theairfiltermustbecleaned
wheneverenginepowerbeginsto
drop.
-Closechokeshutter.
•
Presstabonfilterhousingback-
wards.
•
Removefiltercover.
-Cleanawayallloosedirtaround
airfilter.
•
Removefoamfilter(1)andfelt
filter(2).
-Washfoamfilterindry,non-flam-
mableliquid(e.g.warmsoapy
water)anddryit.
-Thefeltfiltermustbereplaced!
Itcanalsobecleanedbytapping
orblowing-itmustnotbe
washed.
Note:Damagedpartsmustbe
replacedimmediately.
Thepartsareinstalledinreverse
order.
-Placefoamfilterinfiltercover.
•
Placefeltfilter(withmarkingin-
sideandtaboutside)infilter
housing.
•
Thenoseonthefilterhousing
mustengageintheopeningin
thefiltercover.
Refertothemanual"Trouble-
shooting,standardrepairs"for
troubleshootingprocedures.
Important!Thetankventmust
alsobecheckedandcleaned-
see8.3-iffaultsdevelopinthe
carburetororfuelsupply.
Thecarburetorcanbetestedfor
leakswiththecarburetorand
crankcasetester11068502905.
-Removeshroud,see3.1.
•
Pullfuelhoseoffelbow
connector.
•
Connectfuelline(1)
11101418600ontosocket(2)
00008559200.
392RA104
VA
392RA106
Innen
INSIDE
FACE INTERNE
VA
392RA107
VA
8. FuelSystem 8.2 Carburetor
8.1 Airfilter 8.2.1 Leakagetesting
392RA108
VA
143RA172
2 1
VA
392RA105
1 2
VA
35