Engine Cranks But Will Not Start (Gasoline Units); Test - Generac Power Systems Guardian 5410 Repair Manual

Section 6
TROUBLESHOOTING FLOWCHARTS
Problem 7 – Engine Cranks But Will Not Start (Gasoline Units)
(Overcrank Warning Code on SW1 LED – 3 Flashes)
TEST 25 –
CHECK FUEL
SUPPLY
LOW FUEL
REPLENISH FUEL SUPPLY
TEST 15 – CHECK
FUEL PUMP
OPERATION
BAD
REPLACE
FUEL
PUMP
TEST 31 – CHECK
AND ADJUST
IGNITION
MAGNETOS
TEST 33 – CHECK
CARBURETION
ADJUST OR REPAIR
TEST 32 – CHECK
VALVE
ADJUSTMENT
BAD
ADJUST VALVES
Page 30
TEST 26 – CHECK
O.K.
WIRE 14 POWER
SUPPLY
BAD
GOOD
TEST 29 –
CHECK
IGNITION
SPARK
GOOD
WEAK SPARK / NO SPARK /
INTERMITTENT SPARK
REPLACE MAGNETOS
BAD
GOOD
ENGINE / CYLINDER
NO START
LEAK DOWN TEST /
COMPRESSION TEST
GOOD
REPLACE
PRINTED CIRCUIT
BOARD
GOOD
TEST 28 –
CHECK FUEL
SOLENOID
TEST 30 –
CHECK SPARK
PLUGS
TEST 34 – CHECK
CHOKE
SOLENOID
ADJUST OR REPAIR
BAD
TEST 35 – CHECK
GOOD
BAD
REPAIR OR REPLACE
AS NECESSARY
TEST 20 – CHECK
START-STOP
SWITCH
REPLACE
BAD
SWITCH
GOOD
REPLACE
BAD
SOLENOID
GOOD
CLEAN AND REGAP OR
REPLACE SPARK PLUG
GOOD
CHECK
FLYWHEEL KEY
– SEE TEST 31
ON PAGE 57
BAD