Engine Cranks But Will Not Start; Problem - Generac Power Systems 4451 & 4986 Repair Manual

CHECK
FUEL
GOOD
SUPPLY
REPLENISH
FUEL
SUPPLY
TEST 38 -
CHECK
FUEL PUMP
BAD
REPAIR
OR
REPLACE
GOOD
TEST 39 -
CHECK
BAD
CARBURETION
GOOD
TEST 5 - CHECK
STEPPER
BAD
MOTOR
CONTROL
GOOD
TEST 40 - CHECK
VALVE GOOD
ADJUSTMENT
BAD
ADJUST AND
REPAIR OR REPLACE AS NECESSARY
RE-TEST
REFER TO ENGINE SERVICE MANUAL
P/N 0E2081 FOR FURTHER ENGINE
Problem 7 - Engine Cranks But Will Not Start
CHECK
FUEL
GOOD
SHUTOFF
VALVE
OFF
TURN ON
TEST 36 - CHECK
GOOD FUEL SHUTOFF
SOLENOID (FSS)
BAD
TEST 37 - CHECK
FUEL SHUTOFF
SOLENOID VOLTAGE
DC VOLTAGE
MEASURED AT
TWO PIN
CONNECTOR
REPAIR
OR REPLACE
FSS
REPAIR
OR
REPLACE
TEST 41 - CHECK
ENGINE / CYLINDER
LEAK DOWN TEST /
COMPRESSION TEST
BAD
SERVICE INFORMATION
tRoublesHooting FloWcHaRts
VERIFY THAT IDLE
CONTROL SWITCH
OFF
IS IN THE "OFF"
POSITION
ON
TURN OFF
TEST 30 -
CHECK
GOOD
SPARK
PLUGS
BAD
REPLACE
GOOD
BAD
TEST 32 - CHECK
START STOP
RELAY (SSR)
TEST 35 - CHECK AND
ADJUST IGNITION
MAGNETOS
ADJUST
OR REPLACE
GOOD
CHECK
FLYWHEEL KEY -
SEE TEST 35
section 5
PULL CHOKE
FULL OUT
PULL OUT
FULL OUT
TEST 29 -
CHECK
GOOD
SPARK
BAD
TEST 31 - REMOVE
NO
WIRE 18 /
SPARK
SHUTDOWN LEAD
SPARK
TEST 32 - TEST
START STOP
BAD
RELAY (SSR)
REPLACE
GOOD
TEST 33 - TEST
BAD
WIRE 167
GOOD
REPAIR
OR REPLACE
TEST 34 - TEST
START STOP
RELAY WIRING
GOOD
REPLACE
PRINTED CIRCUIT
BOARD
Page 33