Lincoln Electric SVM175-A Perform the Fuel Solenoid Test, Perform the Idle Solenoid Test

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F-16					F-16
TROUBLESHOOTING & REPAIR
Observe Safety Guidelines			TROUBLESHOOTING GUIDE
detailed in the beginning of this manual.
PROBLEMS	POSSIBLE AREAS OF		RECOMMENDED
(SYMPTOMS)	MISADJUSTMENT(S)		COURSE OF ACTION
	ENGINE AND IDLE PROBLEMS
The engine shuts down shortly after	1. Check for adequate supply of		1. The oil pressure switch or
starting.		clean, fresh fuel.	coolant temperature switch may
	2. Check fuel and air filters, replace		be faulty.
		if necessary.	2. Check for faulty run/stop switch
	3. Check oil level, add oil as		or engine protection relay.
		required, and look for oil leak-	3. Check for damaged insulation in
		age.	the wiring between the engine
	4. Check for loose or faulty battery		projection relay and the oil pres-
			sure and	coolant	temperature
		cable connections.
			switches. See wiring diagram.
			4. Check for poor electrical con-
			nections at the run/stop switch,
			the engine protection relay, the
			D4 diode bridge, and the fuel
			solenoid. See wiring diagram.
			5. The fuel solenoid may be faulty.
			Perform the Fuel Solenoid Test.
The engine shuts down shortly after	1.	Try resetting circuit breaker. If it	1. Examine the CB7 circuit breaker,
starting and trips the battery circuit		trips again, do not attempt to use	run/stop	switch,	stop button,
breaker, (CB7).		the machine.	Shut-down and idle solenoids,
	2.	Contact a Lincoln Authorized	pull coil PC board, engine pro-
			tection relay, fuel		gauge and
		Field Service Facility.
			sender, alternator, and all the
	Note: Repeated tripping and reset-		wiring connecting these compo-
	ting of the circuit breaker can dam-		nents. Look for any damaged or
	aged it, or alter its trip point. If the		out of place wiring that may be in
	breaker has been tripped and reset		contact with other conductors or
	many times, it should be replaced.		chassis ground. See the wiring
			diagram.
			2. Perform the Idle Solenoid Test.
			Perform	the	Shutdown
			Solenoid Test.
			3. The Pull coil PC board may be
			defective.	Disconnect lead 232
			from terminal B1 of the pull coil
			PC board and insulate it or posi-
			tion it so it does not come into
			contact with chassis ground or
			any other conductor. Start the
			engine; if the engine continues to
			run and the CB7 circuit breaker
			does not trip, the pull coil PC
			board is probably defective and
			should be replaced.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.

RANGER 305D