Engine Temperature Too High; Temperature Gauge Pointer Does Not Register; Coolant Leaks; Service Information - KYMCO SUPER 9 50 Service Manual

11
. COOLING SYSTEM

SERVICE INFORMATION

GENERAL INSTRUCTIONS
• The water pump must be serviced after removing the engine. Other cooling system service can
be done with the engine installed in the frame.
• The engine must be cool before servicing the cooling system.
When the coolant temperature is over 100℃, never remove the radiator cap to release the
pressure because the boiling coolant may cause danger.
• Avoid spilling coolant on painted surfaces because the coolant will corrode the painted surfaces.
Wash off any spilled coolant with fresh water as soon as possible.
• After servicing the system, check for leaks with a cooling system tester.
SPECIAL TOOL
Mechanical seal driver
TORQUE VALUES
Water pump impeller
Water pump cover bolt

TROUBLESHOOTING

Engine temperature too high

• Faulty temperature gauge or thermosensor
• Faulty radiator cap
• Faulty thermostat
• Insufficient coolant
• Passages blocked in hoses or water jacket
• Clogged radiator fins
• Passages blocked in radiator
• Faulty water pump

Temperature gauge pointer does not register

the correct coolant temperature
• Faulty temperature gauge or thermosensor
• Faulty thermostat
11-1
9.8～13.72N-m
7.84～11.76N-m

Coolant leaks

• Faulty pump mechanical (water) seal
• Deteriorated O-rings
• Damaged or deteriorated water hoses
SUPER 9 50