Operator's Manual

Contents
Introduction.................................................................2
Safety...........................................................................4
SafeOperatingPractices.......................................4
SoundPressure.....................................................6
SoundPower........................................................6
Vibration..............................................................6
SlopeIndicator.....................................................8
SafetyandInstructionalDecals.............................9
Setup..........................................................................12
1InstallingtheBoomandChain.........................12
2CheckingFluidLevels......................................13
3ChargingtheBattery(ElectricStartModels
Only)..............................................................13
ProductOverview......................................................13
Controls.............................................................13
Specications.....................................................16
Attachments/Accessories...................................16
Operation...................................................................16
AddingFuel.......................................................16
CheckingtheEngineOilLevel............................17
CheckingtheHydraulicFluidLevel.....................18
StartingandStoppingtheEngine........................19
StoppingtheMachine.........................................20
MovingaNon-functioningMachine...................20
DiggingaTrench................................................20
SecuringtheMachineforTransport....................20
LiftingtheMachine............................................21
OperatingTips...................................................21
Maintenance...............................................................22
RecommendedMaintenanceSchedule(s)................22
PremaintenanceProcedures....................................23
RemovingtheCoverPlate...................................23
InstallingtheCoverPlate....................................23
RemovingtheBottomShield..............................23
InstallingtheBottomShield................................23
Lubrication.............................................................24
GreasingtheMachine.........................................24
GreasingtheTrencherHousing..........................24
EngineMaintenance...............................................25
ServicingtheAirCleaner(Models22970and
22971)............................................................25
ServicingtheAirCleaner(Model22974)..............26
ServicingtheEngineOil.....................................27
ServicingtheSparkPlug.....................................28
FuelSystemMaintenance.......................................30
DrainingtheFuelTank.......................................30
ReplacingtheFuelFilter.....................................30
ElectricalSystemMaintenance................................31
ServicingtheBattery(Models22971and
22974)............................................................31
ReplacingtheFuses(Models22971and
22974)............................................................33
DriveSystemMaintenance.....................................34
ServicingtheTracks............................................34
BeltMaintenance....................................................36
ReplacingthePumpDriveBelt...........................36
ControlsSystemMaintenance.................................37
AdjustingtheTractionControl
Alignment......................................................37
AdjustingtheTractionControlNeutral
Position..........................................................38
AdjustingtheTrackingoftheTraction
Control,FullForwardPosition........................38
HydraulicSystemMaintenance...............................39
ReplacingtheHydraulicFilter.............................39
ChangingtheHydraulicFluid.............................39
CheckingtheHydraulicLines.............................40
TrencherMaintenance............................................40
ReplacingtheDiggingTeeth...............................40
CheckingandAdjustingtheDiggingChain
andBoom......................................................40
ReplacingtheDriveSprocket..............................41
Cleaning.................................................................42
RemovingDebrisfromtheMachine....................42
Storage.......................................................................43
Troubleshooting.........................................................44
Schematics.................................................................46
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