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E-4
PROBLEMS
(SYMPTOMS)
Engine will not go to high idle when
using auxiliary power.
Engine will not go to high idle
under weld or auxiliary loading.
Engine does not develop full
power. Engine runs rough.
Engine will not go to high idle when
attempting to weld or using auxil-
iary power. Switching to manual
high idle does not work.
Engine will not shut off.
Engine does not develop full power.
Low weld and auxiliary output.
Engine runs rough.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE AREAS OF
MISADJUSTMENT(S)
1. Auxiliary power load is less than
100 watts. Idler may not respond
with less than a 100 watt load. Set
idler to "High".
2. Faulty PC board.
1. Faulty idler solenoid. Check for
bent linkage or broken spring
1. Fuel filter clogged, Replace.
2. Air filter clogged, clean or replace.
3. High idle setting incorrect, check
and adjust if required.
4. Valves out of adjustment.
5. Fuel contaminated with water or
sediment. Check fuel pre-filter
and empty of water, bleed fuel
system. Replace fuel in tank if
needed.
1. Broken spring on Idle Solenoid,
solenoid linkage binding, Faulty
PC board, low idle speed set too
low on idle solenoid.
1. Fuel Shutdown solenoid not
functioning properly / linkage
binding. Stop engine by shutting
off valve located on main fuel fil-
ter. Contact authorized local
Engine Service Shop.
1. Fuel filter dirty/clogged. Replace.
2. Air filter dirty/clogged. Replace
Air Filter Element.
3. Fouled fuel injector(s). Contact
authorized Engine Service Shop.
4. Fuel contaminated with water.
Check Main Filter Bowl and Inline
Fuel filters for water. Clean and
replace as needed. Replace fuel
in tank.
5. Cracked or loose fuel hose.
Replace hose and tighten
clamps.
6. Valves out of adjustment. Contact
authorized local Engine Service
Shop.
RANGER 305D
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field Service Facility.
CAUTION
RECOMMENDED
COURSE OF ACTION
E-4
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