E-3

ENGINE TROUBLESHOOTING

E-3

SA 250
Observe all Safety Guidelines detailed throughout this manual
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
CAUTION
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
RECOMMENDED
COURSE OF ACTION
Engine does not start or operates
Irregularly
Engine stops during operation and
the Engine Protection light does not
turn on
Engine stops during operation and
the Engine Protection light does
turn on
1. Faulty Ignition switch and or
Injector pump solenoid
2. Insufficient charging or complete
discharge of the battery
3. Lack of fuel
4. Air mixed in the fuel system.
5. Clogged fuel filter
6. Irregular and faulty fuel supply
( Injector pump trouble)
7. Glow plug not heated
8. Improper viscosity of the lubricat-
ing oil
9. Clogged air cleaner
10. No compression
11. Engine protection light is on
12. Defective governor
13. Engine defective
1. Lack of fuel
2. Clogged fuel filter
3. Air mixed in the fuel system
4. Faulty function of the engine
1. Overheating of the engine
• Lack of coolant
• Loose or damaged fan belt
• Clogged radiator
• Dust or scale clogged in the cool-
ing water passages
• Faulty thermostat
• Lack of oil
• Overloading
• Faulty Idler/Engine Protection
P.C. Board
2. Loss of engine oil pressure
• Lack of engine oil
• Faulty oil pressure switch
• Oil leakage from the lubricating
system
• Clogged oil filter
• To low viscosity of the engine oil
• Faulty Idler/Engine Protection
P.C. Board
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field Service Facility.