AdjustingtheEngineControls
AdjustingtheThrottleControl
Properthrottleoperationdependsuponproperadjustmentof
thethrottlecontrol.Beforeadjustingthecarburetor,ensure
thatthethrottlecontrolisoperatingproperly.
1.Loosentheclampscrewsecuringthethrottle-cable
housingtotheengine(Figure66).
Figure66
1.Clampscrew(choke-cable
housing)
3.Throttle-cablehousing
2.Choke-cablehousing4.Clampscrew
(throttle-cablehousing)
2.MovethethrottlecontrolforwardtotheFastposition.
3.Pullupthecablehousingofthethrottlecable(Figure
66)untilthethrottlecablehasalmostnoslack,and
tightentheclampscrew .
4.Tightentheclampscrewandchecktheenginespeed:
•Highidle:2750to2950rpm
•Lowidle:1450to1650rpm
AdjustingtheChokeControl
1.Loosentheclampscrewsecuringthechoke-cable
housingtotheengine(Figure66).
2.PushthechokecontroldowntotheOpenposition;
refertoChokeControl(page18).
3.Ensurethatthechokevalveonthecarburetorisfully
opened.
4.Pullupthecablehousingofthechokecable(Figure66)
untilthechokecablehasalmostnoslack,andtighten
theclampscrew .
5.Ensurethatthechokevalvemovestothefullyclosed
positionwhenyoupullthechokecontroloutwardand
tothefullyopenedpositionwhenyoupushthechoke
controldownward.
AdjustingtheEngineGovernorSpeed
Control
WARNING
Theenginemustberunningduringadjustmentof
theenginegovernorspeedcontrol.Contactwith
movingpartsorhotsurfacesmaycausepersonal
injury.
•Ensurethatthecontrolhandlesareinthe
neutral-lockedposition,andsettheparking
brakebeforeperformingthisprocedure.
•Keephands,feet,clothing,andotherbodyparts
awayfromanyrotatingparts,themufer,and
otherhotsurfaces.
Adjustthelow-idlespeedasfollows:
1.Starttheengineandletitrunathalfthrottlefor
approximately5minutestowarmup.
2.MovethethrottlecontroltotheSlowsetting.
3.Pushthespringendofthegovernorarmdownward
(Figure67).
Figure67
1.Governorarm
4.Adjustthestopscrewonthecarburetor(Figure68)so
thattheidlespeedis1350to1550rpm.
Note:Checkthespeedwithatachometer.
49
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