KYMCO Downtown 200i, Service Manual, Page: 117 / 230

12. COOLING SYSTEM
12-2
DOWNTOWN 200i
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.
TORQUE VALUES
Water pump impeller 1.0~1.4 kgf-m (11.8 N-m)
Water pump cover bolt 1.0~1.4 kgf-m (11.8 N-m)
TROUBLESHOOTING
Engine temperature too high Coolant leaks
•
Faulty temperature gauge or thermosensor
•
Faulty pump mechanical (water) seal
•
Faulty radiator cap
•
Deteriorated O-rings
•
Faulty thermostat
•
Damaged or deteriorated water hoses
•
Insufficient coolant
•
Passages blocked in hoses or water jacket
•
Clogged radiator fins
•
Passages blocked in radiator
•
Faulty water pump
Temperature gauge shows the wrong temperature
•
Faulty temperature gauge or thermosensor
•
Faulty thermostat
SPECIFICATIONS
Radiator cap relief pressure 0.9 kgf/cm
²
Begins to open 80±2
℃
Thermostat temperature Full-open 90
℃
Valve lift 3.5 ~4.5mm
Coolant capacity
RaHose: 870 cc
Reserve tank: 490 cc