Yamaha CS50 User Manual

CHAPTER 9
TROUBLESHOOTING
STARTING FAILURE / HARD STARTING ……………………………………9-1
ENGINE …………………………………………………………………………9-1
FUEL SYSTEM …………………………………………………………………9-1
ELECTRICAL SYSTEM ………………………………………………………9-2
INCORRECT ENGINE IDLING SPEED ………………………………………9-2
ENGINE …………………………………………………………………………9-2
FUEL SYSTEM …………………………………………………………………9-2
ELECTRICAL SYSTEM ………………………………………………………9-2
POOR MEDIUM-AND-HIGH-SPEED PERFORMANCE ……………………9-3
ENGINE …………………………………………………………………………9-3
FUEL SYSTEM …………………………………………………………………9-3
FAULTY CLUTCH…………………………………………………………………9-3
ENGINE OPERATES BUT SCOOTER WILL NOT MOVE …………………9-3
CLUTCH SLIPS ………………………………………………………………9-3
POOR STARTING PERFORMANCE …………………………………………9-3
POOR SPEED PERFORMANCE ……………………………………………9-3
OVERHEATING ……………………………………………………………………9-4
ENGINE …………………………………………………………………………9-4
COOLING SYSTEM ……………………………………………………………9-4
FUEL SYSTEM …………………………………………………………………9-4
CHASSIS ………………………………………………………………………9-4
ELECTRICAL SYSTEM ………………………………………………………9-4
OVERCOOLING (CS50Z only) …………………………………………………9-4
COOLING SYSTEM ……………………………………………………………9-4
POOR BRAKING PERFORMANCE ……………………………………………9-4
FAULTY FRONT FORK LEGS …………………………………………………9-5
LEAKING OIL …………………………………………………………………9-5
MALFUNCTION ………………………………………………………………9-5
UNSTABLE HANDLING …………………………………………………………9-5
FAULTY LIGHTING OR SIGNALING SYSTEM ………………………………9-6
HEADLIGHT DOES NOT COME ON…………………………………………9-6
HEADLIGHT BULB BURNT OUT ……………………………………………9-6
TAIL/BRAKE LIGHT DOES NOT COME ON ………………………………9-6
TAIL/BRAKE LIGHT BULB BURNT OUT ……………………………………9-6
TURN SIGNAL DOES NOT COME ON ……………………………………9-6
TURN SIGNAL BLINKS SLOWLY ……………………………………………9-6
TURN SIGNAL REMAINS LIT ………………………………………………9-6
TURN SIGNAL BLINKS QUICKLY……………………………………………9-6
HORN DOES NOT SOUND …………………………………………………9-6
TRBL
SHTG

Yamaha CS50 Specifications

General

Fuel Capacity	4.5 liters
Fuel System	Carburetor
Cooling	Air-cooled
Transmission	Automatic
Starting System	Kick start
Brakes	Drum brakes (front and rear)