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TROUBLESHOOTING & REPAIR
F-13 F-13
RANGER 300 D AND 300 DLX
TROUBLESHOOTING GUIDE OBSERVE SAFETY GUIDELINES
DETAILED IN THE BEGINNING OF THIS MANUAL.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
ENGINE PROBLEMS
The engine will not go to high idle
when attempting to weld or when
the auxiliary power is loaded.
1. Check circuit breaker CB8.
Reset if tripped.
2. Make sure the welding cables
and auxiliary power lead con-
nections are tight.
3. Automatic idler may not func-
tion if the auxiliary power is
loaded to less than 150 watts.
1. Check for broken or faulty con-
nections in the sensing leads
(#254, #254A, and lead #3 and
#6). Make sure leads #3 and #6
are looped through the AC cur-
rent sensor.
2. The control board may be
faulty. Replace.
3. Perform the High Speed
Solenoid Resistance Test.
4. Check the leads and associat-
ed connections between the
high speed solenoid and the
control board.
The engine will not crank or cranks
very slowly.
1. Check for loose or faulty battery
cable connections.
2. The battery may be faulty.
1. If the battery is replaced or
tests good, the charging circuit
may be faulty. Perform the
Charging Circuit Test.
2. The starter motor or starter
solenoid may be faulty.
3. The engine may be hard to
crank due to a mechanical fail-
ure in the engine.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con-
tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
1-800-833-9353.