INSTALLATION
F-20 F-20
RANGER 305D
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If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely,
contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
1-888-935-3877.
PROBLEMS
(SYMPTOMS) POSSIBLE AREAS OF
MISADJUSTMENT(S) RECOMMENDED
COURSE OF ACTION
ENGINE AND IDLE PROBLEMS
The engine will not go into high idle
when attempting to strike an arc, or
when a load is applied to any of the
auxiliary power receptacles.
Welding and auxiliary outputs are
normal when the idle switch is in
the “HIGH IDLE” position.
1. Check that the welding cables
and the auxiliary power lead
connections are tight.
1. The weld control PC board may
be defective.
Theengine goes to low idle, but will
not stay at low idle.
1. Make sure there are no external
loads on either the weld termi-
nalsor the auxiliary receptacles.
2. Check that the welding cables
and the auxiliary power lead
connections are tight and that
the insulation is undamaged.
1. The idler solenoid linkage may
be damaged or out of adjust-
ment. Make sure the solenoid
plunger is able to fully seat
against the internal stop of the
solenoid coil assembly.
2. The low idle RPM may be too
low. Perform the Engine
Throttle Adjustment Test.
3. The solenoid hold coil power
circuit may be faulty. Check
wiring and connections on lead
#210A and lead #215.
4. The weld control PC board may
be defective.
CAUTION
Observe Safety Guidelines
detailed in the beginning of this manual. TROUBLESHOOTING GUIDE