Stihl FS 45 - Adjusting the Carburetor; Adjusting Idle Speed

Troubleshootingchart-see
"StandardRepairs,Trouble-
shooting"handbook.
Important:Intheeventoftrouble
withthecarburetororthefuel
supplysystem,alwayscheckand
cleanthetankvent-see9.3.
Thecarburetorcanbetestedfor
leakswiththecarburetorand
crankcasetester11068502905.
-Removethefiltercover-see9.1.
-Checktesterforleaks.
•
Pullfuelhoseoffcarburetor’s
elbowconnector.
•
Fitfuelhose(1)11101418600
onnipple(2)00008559200.
•
Pushthefuelhosewithnipple
ontothecarburetorelbow
connector.
•
Pushthenippleintothetester’s
pressurehose.
•
Closetheventscrew(1)onthe
rubberbulb(2)andpumpairinto
thecarburetoruntilthepressure
gauge(3)showsareadingof
approx.0.8bar(11.5psi).
Ifthispressureremainsconstant,
thecarburetorisairtight.However,
ifitdrops,therearetwopossible
causes:
1.Theinletneedleisnotsealing
(foreignmatterinvalveseator
sealingconeofinletneedleis
damagedorinletcontrollever
sticking).
2.Themeteringdiaphragmis
damaged.
-Aftercompletingtest,openthe
ventscrewandpullthefuelhose
offtheelbowconnector.
-Pushthefuelhoseontothe
elbowconnector.
-Fitthefiltercover.
9.2 Carburetor
9.2.1 LeakageTest
232RA082
VA
232RA081
VA
VA
232RA083
1122
143RA172
VA
232RA084
3
2
1
28 FS45