Lincoln Electric IM992 manual Contact your local Lincoln

E-4	TROUbLESHOOTING	E-4
	Observe all Safety Guidelines detailed throughout this manual

PRObLEMS

(SYMPTOMS)

POSSIbLE

CAUSE

RECOMMENDED

COURSE OF ACTION

Engine will not go to high idle when	1.	Auxiliary power load is less than
using auxiliary power.		100 watts. Idler may not respond
		with less than a 100 watt load. Set
		idler to "High".
	2.	Faulty PC board.(Control or
		Idler).
	3.	Faulty Electronic Governor con-
		troller.
Engine will not go to high idle	1.	Faulty idler solenoid. Check for
under weld or auxiliary loading.		bent linkage or broken spring.
	2.	Faulty PC board.(Control or
		Idler).
	3.	Faulty Electronic Governor con-
		troller.
Engine does not develop full	1.	Fuel filter clogged, Replace.
power. Engine runs rough.	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	If all recommended possible	areas
		and empty of water, bleed fuel	of misadjustment have	been
		system. Replace fuel in tank if	checked and the problem persists,
		needed.	Contact your local Lincoln
			Authorized Field Service Facility.
Engine will not go to high idle when	1.	Faulty PC Board (Control or Idler).
attempting to weld or using auxil-	2.	Faulty Electronic Governor con-
iary power. Switching to manual		troller.
high idle does not work.
Engine will not shut off.	1.	Fuel shutdown solenoid not func-
		tioning properly. Faulty electronic
		governor controller. contact
		authorized local Engine service
		Shop.

CAUTION

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.

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