Lincoln Electric CLASSIC III 10033 Operator's Manual page 24

E-4
ENGINE TROUBLESHOOTING -
TROUBLE
1. Engine fails to start
2. Low oil pressure. Light not lit
when engine is running.
3. Lack of power.
4. Overheating.
5. Knocking.
6. Surging.
**
See engine 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.
TROUBLESHOOTING
CAUSES
a. Out of fuel.
b. Clogged fuel system.
c. Choke not closing tightly.
d. Ignition switch shorted or open.
e. Moisture or carbon on spark plugs.
f. Defective distributor.
a. Oil too light.
b. Oil too low.
c. Defective oil pressure switch or light.
a. Carbon deposits causing pre-ignition.
b. Incorrect timing.
a. No water in radiator or clogged cooling system.
b. Late timing.
c. Improper valve clearance.
d. Fan belt too loose.
a. Poor grade of gasoline.
b. Spark advanced too far.
a. Governor and carburetor toggles and butterfly
valve shaft lever are dirty and sticking.
b. Dirty air filter.
c. Governor spring adjusting screw misadjusted.
d. Governor control rod wrong length.
CAUTION
CLASSIC III AND IIID
(TM27 Gasoline Engine Only)
WHAT TO DO
a. Fill with gasoline.
b. Check all lines to the carburetor.
c. Loosen choke cable screw and slack off choke wire.
d. Replace.
e. Remove plugs, clean and adjust gap.
(See Engine Service Chart)
f. Replace.
a. Drain; refill with proper grade.
b. Fill to "Full" mark on bayonet gage. Do not overfill.
c. Replace.
a. Run engine under full load for a short time.
b. Time ignition. **
a. Check throughout for dirty or broken hoses, clogged
radiator, or defective water pump.
b. Time ignition. **
c. Adjust valve tappets. (See Engine Service Chart
for settings).
d. Adjust for 3/4" to 1" deflection.
a. Use at least 87 octane gasoline.
b. Retime ignition. **
a. Clean and lubricate. Replace toggles if worn.
b. Remove and clean according to instructions on unit.
c. Adjust screw enough to eliminate surge. **
d. Adjust length of control rod so that there is from
1/32" to 1/16" clearance between the stop pin
and the stop when the engine is shut off and the
regulator expanded. **
E-4