Toro 1P65F-2 - Valve Face Contact Test; Valve Guide Inspection; Valve Inspection; Valve Spring

ValveFaceContactTest
1.ApplyalightcoatofPrussianBlueorerasabletippedmarkerinktothevalve
face.
2.Insertthevalve,liftthevalveandsnapclosedagainsttheseatseveraltimes.
Note:Besurethevalvedoesnotrotateontheseat.
3.Inspectthetransferredmakingcompoundforanyareaoftheseatthatis
notconcentric.
4.Replacethecylinderheadifanyoftheaboveitemsarefoundoutof
specication.
ValveGuideInspection
1.Measureandcomparetospecications:
InsideDiameter(IntakeandExhaust)Standard:0.2598–0.2604in.
(6.60–6.615mm)
ServiceLimit:0.2624in.(6.665mm)
2.Replacethecylinderheadifanyoftheaboveitemsarefoundtobeoutof
specication.
ValveInspection
1.Cleancarbonfromthevalve.
Figure140
2.Inspectthevalvestemforpitting,wearorbent.Comparetostandard:
IntakeStandard:0.216in.(5.48mm)
IntakeServiceLimit:0.209in.(5.318mm)
ExhaustStandard:0.214in.(5.44mm)
ExhaustServiceLimit:0.208in.(5.275mm)
3.Inspectthevalvefaceforpitting,wearorcorrosion.
4.Replacethevalveifencounteranyoftheitemsabove.
5.Repeatinspectionforallvalves.
ValveSpring
1.Inspectthefreelengthofthevalvespring.
CompressionSystem:ServiceandRepairs
Page7–18
1P65F-2ServiceManual
3429-270RevA