Operator's Manual

Figure28
1.Sparkplug
3.Pullthewiresoffofthesparkplugsandremovethe
plugsfromthecylinderhead.
4.Checktheconditionofthecenterandsideelectrodes
todeterminetheoperatingtemperatureofthe
engine.
•Lightbrowninsulatortipindicatescorrectspark
plugandheatrange.
•Blackoroilyinsulatortipindicatesanexcessively
richfuelmixture,possiblycausedbyadirtyair
cleanerelementoracarburetorthatissettoo
rich.
•Lightgrayorblistered-whiteinsulatorindicates
overheatingcausedbyaleancarburetorsetting
orincorrectsparkplug(heatrangetoohigh).
5.Aftersettingtheairgapat.040in.,installthespark
plugsinthecylinderhead.Tightentheplugsto
18-22ft.-lb.(24-30NVm).Pushthewiresontothe
sparkplugs.
6.Lowerthehoodandsecurethelatches.
ChangingtheGearCaseOil
andFilter
ServiceInterval:Aftertherst25hours
Every200hours
Changethehydraulicoilandlterinitiallyafter25hours
ofoperation;thereafterchangethemevery200hours
ofoperation.
Important:Thegearcaseoilandltermustbe
changedimmediatelywhenanycontamination,
sludge,waterorcondensationappears.
1.Disengagethehoodlatchesandopenthehood.
2.Placeadrainpanunderthebottomofthegearcase.
Cleantheareaaroundthedrainplug(Figure29).
Note:Whendrainingtheoil,useafunnelorsome
typeofchanneltodivertthedrainingoilawayfrom
themachinecomponentsandintoadrainpan.
Figure29
1.Drainpluglocation
3.Removethedrainplugandallowtheoiltoowinto
adrainpan.Aftertheoilhasdrained,installtheoil
drainplug.
4.Removetheoillter(Figure30),mountedbelow
controlpanelbase,anddiscardthelter.Thoroughly
cleantheltermountingsurfaceandmakesurethat
anewgasketisinstalledinthenewlter.
Figure30
1.Oillter
5.FillthenewlterwithnewMobilDTE26hydraulic
oilorequivalentoil.Applyathinlmofcleanoil
totheltergasket.
6.Installthenewlterbyhanduntilthegasketjust
touchesthemountingsurface,thenturnitan
additional1/2to3/4turn.
7.Removethellercapandaddapproximately4-5
quartsofMobilDTE26hydraulicoilorequivalent
oiltothegearcasereservoir.Installthellercap.
29