Inspecting Brake/Clutch Fluid Level
The brakes and clutch draw fluid from the same reservoir.
Inspect the fluid level in the reservoir regularly. It should be kept at MAX.
The level normally drops with accumulated distance, a condition associated with wear of brake and clutch linings. If it is excessively low, have the brake/clutch system inspected by an Authorized Mazda Dealer.

Adding Brake/Clutch Fluid
WARNING
Be careful not to spill brake fluid on yourself or on the engine:
Spilled brake fluid is dangerous. If it gets in your eyes, they could be seriously injured. If this happens, immediately flush your eyes with water and get medical attention.
Brake fluid spilled on a hot engine could cause a fire.
If the brake/clutch fluid level is low, have the brakes and clutch inspected:
Low brake/clutch fluid levels are dangerous. Low levels could signal brake lining wear or a brake system leak. Your brakes could fail and cause an accident.
If the fluid level is low, add fluid until it reaches MAX.
Before adding fluid, thoroughly clean the area around the cap.
CAUTION
●Brake and clutch fluid will damage painted surfaces. If brake or clutch fluid does get on a painted surface, wash it off with water immediately.
● Using nonspecified brake and clutch fluids will damage the systems. Mixing different fluids will also damage them.
If the brake/clutch system frequently requires new fluid, consult an Authorized Mazda Dealer.
Engine Coolant
Washer FluidClutch [C66 M R]
Purpose, Function
The clutch unit transmits or cuts the drive force between the engine and
MTX according to the clutch pedal operation.
Construction/Operation
The construction/operation of the clutch unit is the same as the original
MTX (ex: G66M-R).
...
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Outline
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