Operator's Manual

Contents
Safety...........................................................................4
SafeOperatingPractices...........................................4
SoundPressure.......................................................6
SoundPower..........................................................6
Vibration................................................................6
SlopeIndicator.......................................................7
SafetyandInstructionalDecals.................................8
Setup...........................................................................12
1InstallingtheBoomandChain...............................12
2CheckingFluidLevels...........................................13
3ChargingtheBattery(ElectricStartModels
Only)................................................................13
ProductOverview.........................................................13
Controls...............................................................13
Specications........................................................16
Attachments/Accessories........................................16
Operation....................................................................16
RecommendedFuel................................................16
CheckingtheEngine-OilLevel.................................17
CheckingtheHydraulicFluidLevel...........................17
StartingandStoppingtheEngine..............................19
StoppingtheMachine.............................................19
MovingaNon-functioningMachine.........................19
DiggingaTrench....................................................20
SecuringtheMachineforTransport..........................20
LiftingtheMachine................................................20
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(Models22972and
22973)...............................................................25
ServicingtheAirCleaner(Model22974)....................26
ServicingtheEngineOil..........................................27
ServicingtheSparkPlug..........................................28
FuelSystemMaintenance...........................................29
DrainingtheFuelTank...........................................29
ReplacingtheFuelFilter..........................................30
ElectricalSystemMaintenance....................................30
ServicingtheBattery(Models22973and
22974)...............................................................30
ReplacingtheFuses(Models22973and
22974)...............................................................32
DriveSystemMaintenance.........................................33
ServicingtheTracks................................................33
BeltMaintenance......................................................35
ReplacingthePumpDriveBelt.................................35
ControlsSystemMaintenance.....................................36
AdjustingtheTractionControlAlignment.................36
AdjustingtheTractionControlNeutral
Position.............................................................37
AdjustingtheTrackingoftheTractionControl,
FullForwardPosition..........................................37
HydraulicSystemMaintenance....................................38
ReplacingtheHydraulicFilter..................................38
ChangingtheHydraulicFluid...................................38
CheckingtheHydraulicLines...................................39
TrencherMaintenance................................................40
ReplacingtheDiggingTeeth....................................40
CheckingandAdjustingtheDiggingChainand
Boom................................................................40
ReplacingtheDriveSprocket...................................40
Cleaning...................................................................42
RemovingDebrisfromtheMachine..........................42
Storage........................................................................42
Troubleshooting...........................................................44
Schematics...................................................................46
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