62-11637 9–2
Indication/Trouble Possible Causes Action / Reference
9.1.2 Engine Starts Then Stops
Engine stops after several rota-
tions
Fuel supply restricted Check
No fuel in tank Check
Leak in fuel system Check
Faulty fuel control operation Engine Manual
Plugged fuel filter 8.5.5
Plugged inlet screen to mechanical pump 8.5.3
Plugged inlet screen to electric pump 8.5.4
Injector nozzle(s) defective Engine Manual
Injection pump defective Engine Manual
Air cleaner or hose restricted 8.5.10
ENCU defective Replace
Electric fuel pump malfunction 8.5.4
Mechanical fuel pump malfunction Engine Manual
Oil pressure switch defective Replace
9.1.3 Engine Will Not Shut Off
Engine will not shut off ENCU operation defective Replace
9.1.4 Starter Motor Malfunction
Starter motor will not crank or
turns slowly
Battery insufficiently charged 9.2
Battery cable connections loose or corroded Check
Battery cables defective Replace
Excessively worn, open or defective starter brushes Engine Manual
Starter motor solenoid defective Engine Manual
Incorrect grade of lubricating oil 2.7
Starter motor turns but pinion
does not engage
Pinion or ring gear obstructed or worn Clean both,
remove burrs,
or replace
Starter motor does not disengage
after engine starts
Starter motor solenoid defective Engine Manual
Defective starter Engine Manual
9.1.5 Malfunction in the Engine Starting Circuit
No power to starter solenoid (SS)
Battery condition Load Test
Damaged or corroded electrical connections at starter Check/Repair
ENCU defective Replace
No power from 3MM-12 to Starter Solenoid connector Check/Repair
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