Yamaha YW50AP Service Manual page 14

STARTING FAILURE/HARD STARTING ........................................................................................... 8-1
FUEL SYSTEM ............................................................................................................................... 8-1
IGNITION SYSTEM ........................................................................................................................ 8-2
COMPRESSION SYSTEM ............................................................................................................. 8-2
POOR IDLE SPEED PERFORMANCE ................................................................................................ 8-3
POOR IDLE SPEED PERFORMANCE ............................................................................................ 8-3
POOR MIDIUM AND HIGH SPEED PERFORMANCE ....................................................................... 8-3
POOR MIDIUM AND HIGH SPEED PERFORMANCE ................................................................... 8-3
FULTY AUTOMATIC(V-BELT TYPE) ................................................................................................. 8-4
SCOOTER DOES NOT MOVE WHILE ENGINE IS OPERATING .................................................. 8-4
CLUTCH OUT FAILURE ................................................................................................................. 8-4
POOR STANDING START(LOW CLIMBING ABILITY) ................................................................. 8-4
POOR ACCELERATION(POOR HIGH SPEED) .............................................................................. 8-4
OVER HEAT ........................................................................................................................................ 8-5
OVERHEAT ..................................................................................................................................... 8-5
POOR SPEED ..................................................................................................................................... 8-5
POOR SPEED ................................................................................................................................. 8-5
IMPROPER KICKING .......................................................................................................................... 8-6
SLIPPING ........................................................................................................................................ 8-6
HARD KICKING .............................................................................................................................. 8-6
KICK CRANK NOT RETURNING ................................................................................................... 8-6
FAULTY BRAKE ................................................................................................................................. 8-7
POOR BRAKING EFFECT ............................................................................................................... 8-7
MALFUNCTION ............................................................................................................................. 8-7
INSTABLE HANDLING ...................................................................................................................... 8-8
INSTABLE HANDLING .................................................................................................................. 8-8
FAULTY SIGNAL AND LIGHTING SYSTEM .................................................................................... 8-9
HEADLIGHT DARK ......................................................................................................................... 8-9
BULB BURNT OUT ........................................................................................................................ 8-9
FLASHER DOES NOT BLINK ......................................................................................................... 8-9
FLASHER KEEPS ON ..................................................................................................................... 8-9
FLASHER BLINKS SLOWER ........................................................................................................ 8-10
FLASHER BLINKS QUICKER ....................................................................................................... 8-10
HORN DOES NOT SOUND ......................................................................................................... 8-10
CHAPTER 8
TROUBLESHOOTING