Generac Power Systems 5415, 5412, 5411, 5413, 5414, 5410 manual Section TROUBLESHOOTING FLOWCHARTS

Section 6

TROUBLESHOOTING FLOWCHARTS

Problem 7 – Engine Cranks But Will Not Start (LP Units) (Overcrank Warning Code on SW1 LED – 3 Flashes)

		TEST 25 –		TEST 26 – CHECK						TEST 20 – CHECK
			O.K.
		CHECK FUEL		WIRE 14 POWER				GOOD		START-STOP
		SUPPLY			SUPPLY					SWITCH
							REPLACE
											BAD
	LOW LP PRESSURE
					BAD
						PRINTED CIRCUIT
							BOARD		REPLACE
									BAD
REPLENISH FUEL SUPPLY									SWITCH
						GOOD

TEST 41 – CHECK

LPG FUEL

SOLENOID

BAD

REPAIR OR

REPLACE

TEST 29 –

CHECK

IGNITION

SPARK

GOOD

TEST 30 –

CHECK SPARK

PLUG

GOOD

GOOD

WEAK SPARK / NO SPARK /

INTERMITTENT SPARK

TEST 31 – CHECK
AND ADJUST
IGNITION
MAGNETOS	BAD	REPLACE MAGNETOS

CLEAN AND REGAP OR REPLACE SPARK PLUG

TEST 32 – CHECK
VALVE	NO START
ADJUSTMENT

BAD

ADJUST VALVES

TEST 35 – CHECK
ENGINE / CYLINDER
	GOOD
LEAK DOWN TEST /
COMPRESSION TEST

BAD

REPAIR OR REPLACE

AS NECESSARY

CHECK

FLYWHEEL KEY

–SEE TEST 31 ON PAGE 57

Page 31