1. Radiator
2. Radiator Fan
3. Water Pump
4. Oil Cooler
5. Oil Cooler Intake Hose
6. Oil Cooler Outlet Hose
7. Cylinder Jacket
8. Cylinder Head Jacket
9. Thermostat Housing
10. Air Bleeder Hose
11. Radiator Cap
12. Radiator Overflow Hose
13. Reserve Tank
14. Reserve Tank Overflow Hose
15. Hot Coolant
16. Cold Coolant
Permanent type antifreeze is used as a coolant to protect the cooling system from rust and corrosion.
When the engine starts, the water pump turns and the coolant circulates.
The thermostat is a wax pellet type which opens or closes with coolant temperature changes. The thermostat continuously changes its valve opening to keep the coolant temperature at the proper level.
When coolant temperature is less than 55°C (131°F), the thermostat closes so that the coolant flow is restricted through the air bleeder hole, causing the engine to warm up more quickly. When coolant temperature is more than 58 ∼ 62°C (136 ∼ 144°F), the thermostat opens and the coolant flows.
When the coolant temperature goes up beyond 95°C (203°F), the radiator fan relay conducts to operate the radiator fan. The radiator fan draws air through the radiator core when there is not sufficient air flow such as at low speeds. This increases up the cooling action of the radiator. When the coolant temperature is below 90°C (194°F), the fan relay opens and the radiator fan stops.
In this way, this system controls the engine temperature within narrow limits where the engine operates most efficiently even if the engine load varies.
The system is pressurized by the radiator cap to suppress boiling and the resultant air bubbles which can cause engine overheating. As the engine warms up, the coolant in the radiator and the water jacket expands. The excess coolant flows through the radiator cap and hose to the reserve tank to be stored there temporarily. Conversely, as the engine cools down, the coolant in the radiator and the water jacket contracts, and the stored coolant flows back to the radiator from the reserve tank.
The radiator cap has two valves. One is a pressure valve which holds the
pressure in the system
when the engine is running. When the pressure exceeds 112
142 kPa (1.14
1.45 kgf/cm², 16
21
psi), the pressure valve opens and releases the pressure to the reserve tank. As
soon as pressure
escapes, the valve closes, and keeps the pressure at 112
142 kPa (1.14
1.45 kgf/cm², 16
21 psi).
When the engine cools down, another small valve (vacuum valve) in the cap opens. As the coolant cools, the coolant contracts to form a vacuum in the system. The vacuum valve opens and allows the coolant from the reserve tank to enter the radiator.
Specifications
Special Tools
Bearing Driver Set:
57001-1129
Oil Seal Driver 37.5:
57001-1660
Check 2-1: Speedometer Inspection
Using the suitable stand, raise the rear wheel off the
ground.
Rotate the rear wheel by hand or start the engine.
Check that the display changes speedometer.
If the display function does not work, check the following
parts.
Rear Wheel Rotation Sensor (see Wheel Rotation Sensor
Inspe ...
Clutch Plate, Wear, Damage Inspection
Visually inspect the friction and steel plates for signs of
seizure, overheating (discoloration), or uneven wear.
Measure the thickness of each friction plate [A] at several
points.
If any plates show signs of damage, or if they have worn
past the service limit, replace them with new on ...
Damping Force Adjustment (
ZX1000JC/KC)
To adjust the damping force, turn the damping adjuster
[A] until you feel a click.
The standard adjuster setting is the 18th click from the
1st of the fully clockwise position. If the damping feels too
soft or too stiff, adjust it in accordance with the following
table.
Damping Force Adj ...