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TROUBLESHOOTING & REPAIR
F-10 F-10
RANGER 8
Observe Safety Guidelines
TROUBLESHOOTING GUIDE
detailed in the beginning of this manual.
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 (WELD).
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
ENGINE PROBLEMS
Engine will not idle down to low
speed. Machine has normal weld
output and auxiliary power.
1. Make sure the Idler Switch (S4)
is in the “Auto” position.
2. Make sure there is NOT an
external load on the weld termi-
nals nor the auxiliary power
receptacles.
1. With the Idler Switch (S4) in the
“Auto” position, check for the
presence of 12VDC at leads
#213 to #215 located at the
Idler Solenoid. If 12VDC is pre-
sent and the Idler Solenoid is
not activating, then the solenoid
may be faulty or there is a
mechanical restriction prevent-
ing it from functioning.
2. If there is NOT 12VDC at leads
#213 to #215, then test for
12VDC from lead #213 to
ground (lead #5). See Wiring
Diagram. If 12VDC is present,
then check lead #215 for conti-
nuity (zero ohms) from the Idler
Solenoid to the Printed Circuit
Board plug 3J1. If lead #215 is
OK, then the Printed Circuit
Board may be faulty. Replace.
3. If there is NOT 12VDC from lead
#213 to ground (lead #5), then
check the Idler Switch (S4) for
proper operation and as-
sociated wires for loose or
faulty connections.