Generac Power Systems 5410, 5412, 5411, 5413 Problem 8 - Engine Starts Hard and Runs Rough LP Units

Section 6

TROUBLESHOOTING FLOWCHARTS

Problem 8 – Engine Starts Hard and Runs Rough (LP Units)

TEST 25 –

CHECK

FUEL

SUPPLY

LOW FUEL

		TEST 29 –
					TEST 30 –
		CHECK	GOOD		CHECK		GOOD
GOOD
		IGNITION			SPARK
		SPARK			PLUGS
						BAD
	ENGINE MISS IS APPARENT
				CLEAN AND REGAP OR
				REPLACE SPARK PLUG

REPLENISH

FUEL

SUPPLY

TEST 31 – CHECK

AND ADJUST

IGNITION

MAGNETOS

BAD REPLACE MAGNETOS

TEST 32 – CHECK

VALVE

ADJUSTMENT

BAD

ADJUST VALVES

GOOD

CHECK
FLYWHEEL KEY
	GOOD
– SEE TEST 31
ON PAGE 57

REPAIR OR REPLACE

AS NECESSARY

TEST 35 – CHECK

ENGINE / CYLINDER LEAK DOWN TEST / COMPRESSION TEST

BAD GOOD

CHECK FUEL

REGULATOR AND

CARBURETOR

Page 33