Water Hoses
Check the water hoses for cracks or deterioration, and the connections for looseness in accordance with the Periodic Maintenance Chart.
Radiator
Check the radiator fins for obstruction by insects or mud. Clean off any obstructions with a low-pressure stream of water.
NOTICE
Using high-pressure water, as from a car wash facility, could damage the radiator fins and impair the radiator’s effectiveness. Do not obstruct or deflect airflow by in-stalling unauthorized accessories in front of the radiator. Interference with the cooling airflow can lead to overheating and consequent engine damage.
Coolant
The coolant absorbs excessive heat from the engine and transfers it to the air through the radiator. If the coolant level becomes low, the engine overheats and may suffer severe damage. Check the coolant level each day before riding the motorcycle, and re-plenish the coolant if the level is low.
WARNING
The cooling system can get extremely hot during normal operation and cause serious burns. Do not touch the radiator when it is hot, nor open the radiator cap. Hot coolant inside will cause severe burns.
NOTICE
Use coolant-containing corrosion inhibitors made specifically for aluminum engines and radiators in accordance with the instruction of the manufacturer. Soft or distilled water must be used with the antifreeze in the cool- ing system. If hard water is used in the system, it causes scale accumulation in the water passages, and considerably reduces the efficiency of the cooling system.
NOTE
The coolant originally filled into the cooling system contains 50% of a permanent, ethylene-glycol -based antifreeze, has a freezing point of-35°C -31F) and a green appearance.
Coolant Level Inspection
A. Radiator Cap
Check the coolant level in the radiator. The coolant should come up to the bottom of the radiator filler neck.
NOTE
Check the coolant level when the engine is cold (room or ambient temperature).
A. Coolant Level
B. Radiator Filler Neck
If the coolant level is low, add coolant through the radiator filler opening to the bottom of the radiator filler neck.
Recommended Coolant Mixed Ratio
Soft water 50%, coolant 50%
Recommended Coolant Type
A permanent type of antifreeze (soft water and ethylene glycol plus corrosion and rust inhibitor chemicals for aluminum engines and radiators)
Coolant Total Amount
0.57 L (0.60 US qt)
Coolant Change
The coolant should be changed periodically to ensure long engine life.
A. Coolant Drain Bolt (Water Pump) and Gasket
B. Water Pump Cover
A. Coolant Drain Bolt (Cylinder) and Gasket
B. Right Side of the Cylinder
NOTICE
Immediately wash away any coolant that spills on the frame, engine, or wheel.
WARNING
Coolant on tires will make them slippery and can cause loss of traction resulting in an accident and injury. Thoroughly clean any coolant that might have splashed on the tires.
NOTE
Always replace gaskets with new ones. Tighten the coolant drain bolts to the specified torque.
Tightening Torque
Coolant Drain Bolt (Water Pump): 5.2 Nm (0.53 kgfm, 46 in-lb) Coolant Drain Bolt (Cylinder): 9.0 Nm (0.92 kgfm, 80 in lb) Fill the radiator up to the bottom of the radiator filler neck with coolant.
NOTE
A. Air Bleeder Bolt and Gasket
B. Cylinder Head
Tighten the air bleeder bolt to the specified torque.
Air Bleeder Bolt:
10 N m (1.0 kgfm, 89 in-lb)
A. Air Bubbles
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