g000502
Figure2
1.Safety-alertsymbol
Thismanualuses2wordstohighlightinformation.
Importantcallsattentiontospecialmechanical
informationandNoteemphasizesgeneralinformation
worthyofspecialattention.
Contents
Safety.......................................................................4
GeneralSafety...................................................4
SafetyandInstructionalDecals..........................4
Setup........................................................................9
1InstallingtheBoomandChain..........................9
2CheckingtheFluidLevels..............................10
3ChargingtheBattery(Electric-StartModels
Only).............................................................10
ProductOverview....................................................11
Controls............................................................11
KeySwitch.....................................................11
Specications..................................................14
Attachments/Accessories.................................14
BeforeOperation.................................................15
BeforeOperationSafety...................................15
AddingFuel......................................................15
PerformingDailyMaintenance..........................16
DuringOperation.................................................17
DuringOperationSafety...................................17
StartingtheEngine...........................................18
DrivingtheMachine..........................................18
ShuttingofftheEngine......................................18
DiggingaTrench..............................................19
OperatingTips.................................................19
AfterOperation....................................................20
AfterOperationSafety......................................20
MovingaNon-FunctioningMachine..................20
SecuringtheMachineforTransport..................20
LiftingtheMachine...........................................20
Maintenance...........................................................21
MaintenanceSafety..........................................21
RecommendedMaintenanceSchedule(s)...........21
Pre-MaintenanceProcedures..............................22
RemovingtheCoverPlate................................22
RemovingtheBottomShield............................23
Lubrication..........................................................23
GreasingtheMachine.......................................23
GreasingtheTrencherHousing........................24
EngineMaintenance...........................................25
EngineSafety...................................................25
ServicingtheAirCleaner..................................25
ServicingtheEngineOil....................................27
ServicingtheSparkPlug(s)..............................29
FuelSystemMaintenance...................................30
DrainingtheFuelT ank......................................30
ReplacingtheFuelFilter...................................31
ElectricalSystemMaintenance...........................31
ElectricalSystemSafety...................................31
ServicingtheBattery.........................................31
ReplacingtheFuses(Models22973and
22974)...........................................................33
DriveSystemMaintenance..................................34
ServicingtheTracks.........................................34
BrakeMaintenance.............................................36
TestingtheParkingBrake.................................36
BeltMaintenance................................................37
ReplacingthePump-DriveBelt.........................37
ControlsSystemMaintenance.............................37
AdjustingtheTraction-Control
Alignment......................................................37
HydraulicSystemMaintenance...........................39
HydraulicSystemSafety...................................39
HydraulicFluidSpecications...........................39
CheckingtheHydraulic-FluidLevel...................40
ReplacingtheHydraulicFilter...........................40
ChangingtheHydraulicFluid............................41
TrencherMaintenance.........................................42
ReplacingtheDiggingTeeth.............................42
CheckingandAdjustingtheDiggingChain
andBoom.....................................................42
ReplacingtheDriveSprocket...........................43
Cleaning..............................................................44
RemovingDebrisfromtheMachine..................44
Storage...................................................................44
StorageSafety..................................................44
Storage.............................................................44
Troubleshooting......................................................46
Schematics.............................................................48
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