CPI GTR180 Service Manual page 7

CPI MOTOR
II.TROUBLE SHOOTING
POOR PERFORMANCE AT IDLE AND LOW SPEEDS
FLOW PATH
CHECK IGNITION TMING
AND VALVE CLEARANCE
1
CORRECT TIMING AND
CLEARANCE
CHECK CARBURETOR
PILOT SCREW
ADJUSTMENT
2
CORRECTLY ADJUSTED
CHECK FOR AIR LEAKS
3
NO AIR LEAKS
REMOVE SPARK PLUG AND
TEST SPARK
4
BAD SITUATION
INCORRECT TIMING AND
CLEARANCE
INCORRECTLY ADJUSTED
AIR LEAKS
WEAK OR INTERMITTENT
SPARK
2-4
《 》
PROBABLE CAUSE
(1) INCORRECT TIMING ADJUSTMENT
(2) INCORRECT VALVE CLEARANCE
(1) MIXTURE TOO LEAN
(2) MIXTURE TOO RICH
(1) FAULTY CARBURETOR PACKING
(2) CARBURETOR NOT SECURELY
TIGHTENED
(3) FAULTY INTAKE PIPE GASKET
(1) FAULTY OR FOULED PLUG
(2) FAULTY C.D.I.
(3) MAGNET AT FAULT
GTR180