Generac Power Systems 5410 User Manual

Section 6

TROUBLESHOOTING FLOWCHARTS

Page 31

CLEAN AND REGAP OR
REPLACE SPARK PLUG

REPLACE

BAD

SWITCH

REPAIR OR

REPLACE

REPLACE MAGNETOS

ADJUST VALVES

REPLENISH FUEL SUPPLY

O.K.

Problem 7 – Engine Cranks But Will Not Start (LP Units)

(Overcrank Warning Code on SW1 LED – 3 Flashes)

BAD

REPAIR OR REPLACE

AS NECESSARY

BAD

GOOD

TEST 26 – CHECK

WIRE 14 POWER

SUPPLY

TEST 20 – CHECK

START-STOP

SWITCH

TEST 25 –

CHECK FUEL

SUPPLY

TEST 41 – CHECK

LPG FUEL

SOLENOID

TEST 29 –

CHECK

IGNITION

SPARK

TEST 31 – CHECK

AND ADJUST

IGNITION

MAGNETOS

TEST 30 –

CHECK SPARK

PLUG

TEST 32 – CHECK

VALVE

ADJUSTMENT

TEST 35 – CHECK

ENGINE / CYLINDER

LEAK DOWN TEST /

COMPRESSION TEST

CHECK

FLYWHEEL KEY

– SEE TEST 31

ON PAGE 57

LOW LP PRESSURE

WEAK SPARK / NO SPARK /

INTERMITTENT SPARK

NO START

REPLACE

PRINTED CIRCUIT

BOARD