Hobart Welding Products OM-487 manual Auxiliary Power, Engine

B. Auxiliary Power

Trouble	Remedy
No power output.	Reset circuit breakers CB1, CB2, CB3 and/or CB4 (see Section 6-1).
	Check fuse F1, and replace if necessary (see Section 7-8).
	Have Factory Authorized Service Agent check brushes, slip rings, and field current control board PC2.
Low power output.	Check air cleaner, and clean or replace element if necessary.
	Check engine speed, and adjust if necessary (see Section 7-7).
	See engine manual.
High power output.	Check engine speed, and adjust if necessary (see Section 7-7).
Erratic power output.	Have Factory Authorized Service Agent check brushes, slip rings, and field current control board PC2.
	Check receptacle wiring and connections.
	Check governor according to engine manual.

C. Engine

Trouble	Remedy
Engine will not crank.	Check fuse F6, and replace if open (see Section 7-8).
	Check battery voltage.
	Check battery connections and tighten if necessary.
	Check plug PLG5 and plug PLG8 connections.
	Have Factory Authorized Service Agent check Engine Control switch S2.
Engine does not start.	Check fuel level (see Section 4-3).
	Open fuel valve (see Section 4-3).
	Service primary and secondary fuel filters (see Section 7-6).
	Check battery and replace if necessary.
	Check engine charging system according to engine manual.
	Bleed air from fuel system according to engine manual.
	See engine manual.
Engine starts but stops when Engine	Check oil level (see Section 4-3). Engine will not start if oil pressure is too low.
Control switch returns to Run position.
	Check coolant level and fan belt (see Section 4-3 and engine manual). Engine will not start if engine
	temperature is too high.
	Check and refill crankcase with proper viscosity oil for operating temperature, if necessary (see Sec-
	tion 7-1).
	Have Factory Authorized Service Agent check low oil pressure shutdown switch S5 and engine tem-
	perature switch S7.
Engine does not stop.	Stop engine by closing fuel valve (see Section 4-3). Adjust shutdown solenoid (see Section 7-7).
Engine stopped during normal	Check fuel level (see Section 4-3).
operation.
	Open fuel valve (see Section 4-3).
	Check oil level (see Section 4-3). Engine stops if oil pressure is too low.
	Check coolant level and fan belt (see Section 4-3 and engine manual). Engine stops if engine temper-
	ature is too high.
	Bleed air from fuel system according to engine manual.
	Have Factory Authorized Service Agent check low oil pressure shutdown switch S5 and engine tem-
	perature switch S7.

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