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ENGINE PROBLEMS
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely,
contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed.
Call 1-888-935-3877.
CAUTION
Engine will not go to high idle when
attempting to weld or when the aux-
iliary power is loaded. Welding out-
put and auxiliary power output is
normal when Idler Switch is in the
“HIGH” position.
1. Automatic idler may not function
if the auxiliary power is loaded to
less than 100 Watts.
1. Check that the leads are cor-
rectly wrapped through the
Toroid. See Wiring Diagram.
2. Perform the Toroid Test.
3. The Printed Circuit Board may
be faulty. Replace.
TROUBLESHOOTING AND REPAIR
F-7 F-7
RANGER® 3 PHASE
Engine will not go to high idle when
attempting to weld. Welding output
is normal when Idler Switch is in
“HIGH” position. Automatic idle
function works properly when the
auxiliary power is loaded.
1. Make sure the welding cables
and connections are tight.
1. Check for broken or faulty con-
nections in the sensing lead
(#254). Make sure the connec-
tions are tight at the Output
Rectifier and the Polarity
Switch. See the Wiring
Diagram.
2. Make sure the #254 lead is
wrapped properly through the
Toroid. See the Wiring
Diagram.
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