Kymco XCITING 500 - Service Manual > System Flow Pattern, Service Information

SYSTEM FLOW PATTERN

SERVICE INFORMATION

GENERAL INSTRUCTIONS

WARNING: Removing the radiator cap while the engine is hot can allow the coolant to spray out, seriously scalding you. Always let the engine and radiator cool down before removing the radiator cap.

CAUTION: Radiator coolant is toxic. Keep it away from eyes, mouth, skin and clothes.

• If any coolant gets in your eyes, rinse them with water and consult a physician immediately.
• If any coolant in swallowed, induce vomiting, gargle and consult a physician immediately.
• If any coolant gets on your skin or clothes, rinse thoroughly with plenty of water.

NOTE: Use coolant with silicate inhibitors may cause premature wear of water pump seals or blockage of radiator passages. Using tap water may cause engine damage.

• This section covers service of the cooling system.
• These services can be done with the engine installed in the frame.
• Add coolant at the reserve tank. Do not remove the radiator cap except to refill or drain the system.
• All cooling system services can be done with the engine in the frame.
• Avoid spilling coolant on painted surfaces.
• After servicing the system, check for leaks with a cooling system tester.

SPECIFICATIONS

COOLANT GRAVITY CHART

COOLANT MIXTURE (WITH ANTI-RUST AND ANTI-FREEZING EFFECTS)

Cautions for Using Coolant:

• Use coolant of specified mixing rate. (The mixing rate of 425cc KYMCO SIGMA coolant concentrate + 975cc distilled water is 30%.)
• Do not mix coolant concentrate of different brands.
• Do not drink the coolant which is poisonous.
• The freezing point of coolant mixture shall be 5 lower than the freezing point of the riding area.

TORQUE VALUES

Water pump cover bolt  13 N*m (1.3 kgf*m, 9 lbf*ft)
Fan motor bolt   5 N*m (0.53 kgf*m, 3.8 lbf*ft)
Radiator shroud mounting nut   9 N*m (0.9 kgf*m, 6.5 lbf*ft)

TROUBLESHOOTING

Engine temperature too high

• Faulty radiator cap
• Faulty temperature gauge or thermosensor
• Air in system
• Thermostat stuck closed
• Insufficient coolant
• Passages blocked in radiator, hoses or water jacket
• Faulty cooling fan motor
• Faulty fan motor switch
• Faulty water pump

Engine temperature too low

• Faulty temperature gauge or thermosensor
• Thermostat stuck open
• Faulty fan motor switch

Coolant leak

• Faulty water pump mechanical seal
• Deteriorated O-rings
• Faulty radiator cap
• Damaged or deteriorated cylinder head gasket
• Loose hose connection or clamp
• Damaged or deteriorated hoses

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