SECTION 10 - ENGINE
10-11
TROUBLESHOOTING
ENGINE WILL CRANK BUT DOES NOT START
CAUSE CORRECTION
Faulty key switch Correct the connection and/or replace switch
Blown 5-amp electronic ignition fuse (cab fuse
panel)
Replace fuse
Fuel solenoid not operating Check solenoid for battery voltage and correct
Insufficient charging or complete discharging of the
battery
Charge or replace battery
Lack of fuel Fill fuel tank
Air mixed in the fuel system Bleed the air
Clogged fuel filter Replace
Irregular and faulty fuel supply (electric fuel pump) Check power supply; check fuse in fuse panel;
check for corroded internal components (replace
pump and in-line filter if corroded)
Irregular and faulty fuel supply (injection pump
trouble)
Repair in an authorized service shop
Glow plug not heating Failure of the glow plug; replace
Improper viscosity of the lubricating oil Inspect and replace
Clogged air cleaner Clean or replace
No compression Repair in a service shop
ENGINE WILL NOT CRANK OR START
CAUSE CORRECTION
Seat belt not fastened Buckle seat belt
Faulty key switch Correct the connection and/or replace switch
Insufficient charging or complete discharging of the
battery
Charge or replace battery
Blown 5-amp electronic battery fuse (engine fuse
panel)
Replace fuse
Blown 15-amp key main fuse (engine fuse panel) Replace fuse
Open in W/O (white-orange) wire between the
seat/seat belt connector and start interlock relay
Check and repair as required
Faulty start interlock relay Check and repair as required
IRREGULAR RUNNING OF THE ENGINE
CAUSE CORRECTION
Air mixed in the fuel system Bleed the air from the system
Uneven fuel injection (faulty fuel injection pump) Repair at authorized shop
Clogged fuel filter Replace
Defective governor Check and correct
Engine itself defective Repair in a service shop
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