Lincoln Electric VANTAGE 400 Service Manual page 65

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Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
The engine will not develop full
power.
The engine will not idle down to
low RPM. The machine has nor-
mal weld and auxiliary output.
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.
TROUBLESHOOTING & REPAIR
POSSIBLE AREAS OF
MISADJUSTMENT(S)
OUTPUT PROBLEMS
The fuel may be old or contami-
nated. Supply the engine with
clean fresh fuel.
The fuel filter may be clogged,
replace if necessary.
The air filter may be clogged,
replace if necessary.
Make sure the idle switch is in the
"AUTO IDLE" position. Make sure
there is no external load on the
weld terminals or the auxiliary
power receptacles.
Check for mechanical restrictions
in the idler solenoid linkage.
CAUTION
VANTAGE® 400
RECOMMENDED
COURSE OF ACTION
The engine may be in need of
adjustment or repair.
Perform the IDLER SOLENOID
TEST.
Check for damaged wiring or faulty
connections at the idle solenoid,
the engine protection PC Board,
the run/stop switch and the start
button.
Check for loose or damaged wiring
or faulty connections at leads #405
and #226, #227 and connections
J,P-55-2 and J,P-55-4, (control PC
board P2-5, and engine protection
board, J32-2, B3, and J31-8). See
wiring diagram.
Set idle switch in the "AUTO" posi-
tion. Set the mode switch to the
"CC-STICK" position. Make sure
that no load is applied to either the
weld or auxiliary output
Start the machine and allow it to
run for about 30 seconds.
Manually move the idle solenoid
plunger to the idle position. If the
solenoid engages and holds in the
idle position, the idle pull coil may
be bad.
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