The engine uses excessive oil.
Possible Cause Corrective Action
The engine has an oil leak. Inspect the engine and repair as
needed.
The oil is an incorrect viscosity. Change the oil and filter, replace the oil
with the correct viscosity oil.
Clogged air cleaner. Inspect and clean or replace the air filter
as needed.
The engine has worn rings and cylinder
walls.
Inspect the engine, repair as needed.
Improper valve clearance. Check and adjust valve clearance.
The machine will not move with the engine running.
Possible Cause Corrective Action
The high/low shift lever is in the neutral
position.
Adjust the high/low shift lever to the
desired position.
The hydraulic fluid level is low. Adjust the hydraulic fluid level.
The parking brake is engaged Disengage the parking brake
The hydraulic pump control arm linkage
is loose or disconnected.
Inspect and adjust/repair the hydraulic
pump control arm linkage.
The tow valve is bypassing the hydraulic
pump.
Adjust the hydraulic pump tow valve.
A faulty hydraulic pump. Inspect and repair or replace the
hydraulic pump.
A faulty hydraulic motor. Inspect and repair or replace the
hydraulic motor.
The engine stalls when the SDLA lever is moved
forward or backward.
Possible Cause Corrective Action
The parking brake switch is out of
adjustment.
Adjust the parking brake switch.
The neutral switch is out of adjustment. Adjust the neutral switch.
4520P Page 3–11 Troubleshooting: General Engine Problems
09.40003Rev 00
To Next Page
