Operator's Manual

Contents
Introduction.................................................................2
Safety...........................................................................4
SafeOperatingPractices.......................................4
SoundPressure.....................................................6
SoundPower........................................................6
Vibration..............................................................6
SlopeChart..........................................................7
SafetyandInstructionalDecals.............................8
Setup..........................................................................11
1InstallingtheBoomandChain.........................11
2CheckingFluidLevels......................................12
3ChargingtheBattery(Model22971
Only)..............................................................12
ProductOverview......................................................12
Controls.............................................................12
Specications.....................................................15
Attachments/Accessories...................................15
Operation...................................................................15
AddingFuel.......................................................15
CheckingtheEngineOilLevel............................16
CheckingtheHydraulicFluidLevel.....................17
StartingandStoppingtheEngine........................18
StoppingtheMachine.........................................19
MovingaNon-functioningMachine...................19
DiggingaTrench................................................19
SecuringtheMachineforTransport....................19
LiftingtheMachine............................................20
OperatingTips...................................................20
Maintenance...............................................................21
RecommendedMaintenanceSchedule(s)................21
PremaintenanceProcedures....................................22
RemovingtheCoverPlate...................................22
InstallingtheCoverPlate....................................22
RemovingtheBottomShield..............................22
InstallingtheBottomShield................................22
Lubrication.............................................................23
GreasingtheMachine.........................................23
GreasingtheTrencherHousing..........................23
EngineMaintenance...............................................24
ServicingtheAirCleaner....................................24
ServicingtheEngineOil.....................................25
ServicingtheSparkPlug.....................................27
FuelSystemMaintenance.......................................28
DrainingtheFuelTank.......................................28
ReplacingtheFuelFilter.....................................28
ElectricalSystemMaintenance................................29
ServicingtheBattery(Model22971
Only)..............................................................29
ReplacingtheFuses(Model22971
Only)..............................................................31
DriveSystemMaintenance.....................................32
ServicingtheTracks............................................32
BeltMaintenance....................................................34
ReplacingthePumpDriveBelt...........................34
ControlsSystemMaintenance.................................35
AdjustingtheTractionControl
Alignment......................................................35
AdjustingtheTractionControlNeutral
Position..........................................................36
AdjustingtheTrackingoftheTraction
Control,FullForwardPosition........................36
HydraulicSystemMaintenance...............................37
ReplacingtheHydraulicFilter.............................37
ChangingtheHydraulicFluid.............................37
CheckingtheHydraulicLines.............................38
TrencherMaintenance............................................38
ReplacingtheDiggingTeeth...............................38
CheckingandAdjustingtheDiggingChain
andBoom......................................................38
ReplacingtheDriveSprocket..............................39
Cleaning.................................................................40
RemovingDebrisfromtheMachine....................40
Storage.......................................................................41
Troubleshooting.........................................................42
Schematics.................................................................44
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