AdjustEngineSpeed
1.Allowenginetoreachoperatingtemperaturebeforecheckingoradjusting
enginespeed.Ensurethatthethrottlecontrolisadjustedproperlybefore
adjustingenginespeed;refertoAdjustThrottleControl(page3–6).
2.Parkmachineonalevelsurface,lowercuttingdeck(orimplement),and
engageparkingbrake.EnsurethatthePTOswitchisOFF.Raisehoodto
gainaccesstoenginecontrols.
3.Withenginerunning,moveremotethrottlecontrollevertoFASTposition.
4.Usingatachometer,checkthattheengineisoperatingat3,100to3,250rpm.
g230315
Figure9
1.Speedcontrollever
2.Highspeedscrew3.Locknut
Ifhighidlespeedisincorrect,adjusthighspeedscrewongovernorbracket
(Figure9).
A.Loosenlocknutonhighspeedscrew.
B.Adjusthighspeedscrewtoobtain3,100to3,250rpm.
C.Tightenlocknut.Checkhighspeed.
5.MoveremotethrottlecontrollevertoSLOWposition.
g230316
Figure10
1.Carburetor
2.Throttlelever3.Idlespeedscrew
6.Rotateandholdcarburetorthrottleleveragainsttheidlespeedscrew(Figure
10).Usingatachometer,checkthattheengineidlespeedis1,400to1,550
rpm.Ifidlespeedisincorrect,adjustcarburetoridlespeedscrewtoobtain
1,400to1,550rpm.
GasolineEngine:Adjustments
Page3–8
Groundsmaster
®
3280-D/3320
05138SLRevB
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