Lincoln Electric VANTAGE 400 Operator's Manual page 35

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 auxiliary
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.
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
CAUSE
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.(Control or Idler).
1. Faulty idler solenoid. Check for bent
linkage or broken spring.
2. Faulty PC board.(Control or Idler).
1. Fuel filter clogged, Replace.
2. Air filter clogged, clean or replace.
3. High idle setting incorrect, check
adjust if required.
4. Valves out of adjustment.
5. Fuel contaminated with water or
ment. 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 (Control
or Idler), 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
filter. 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
water separator 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 autho-
rized local Engine Service Shop.
and
sedi-
If all recommended possible areas of mis-
adjustment have been checked and the
problem persists, Contact your local
Lincoln Authorized Field Service
Facility.
CAUTION
E-4
RECOMMENDED
COURSE OF ACTION