Generac Power Systems GP1800 Repair Manual page 42

SECTION 3.2
410cc TROUBLESHOOTING FLOW CHARTS
TEST 20 –
CHECK 1.5
AMP FUSE
BAD
REPLACE FUSE
*Acceptable running limits for the engine are between 59-62 Hertz.
TEST 30 –
STILL
CHOKE TEST
SURGING
NO
SURGING
TEST 29 –
CHECK
GOOD
CARBURETION
REPAIR OR
REPLACE
Page 40
Problem 25 – Battery Will Not Charge
CHECK CONNECTIONS
GOOD
ON BATTERY CHARGE
Problem 26 – Engine "Hunts" / Erratic Idle
TEST 33 –
CHECK VALVE
ADJUSTMENT
BAD
ADJUST / RE-TEST
TEST 41 – CHECK
AND ADJUST
GOVERNOR
BAD
SOCKET
BAD
REPLACE
TEST 26 –
GOOD CHECK
SPARK
GOOD
TEST 27 – CHECK
GOOD
SPARK PLUG
BAD
REPLACE
REPLACE MAGNETO
PART 3
ENGINE TROUBLESHOOTING
REPLACE
GOOD
BATTERY
CHARGER
BAD - ENGINE
MISS APPARENT
TEST 38 –
GOOD
FLYWHEEL
REPLACE
CHECK
BAD