CAUTION:
Do not allow clutch fluid to get on a painted surface. Clutch fluid contains properties which can dissolve the paint. If clutch fluid gets on a painted surface, wash it off with water immediately and wipe the area off completely.
1. Verify reserve tank cap is on tight.
2. Pump the clutch pedal a few times.
3. Inspect for the clutch fluid leakage at the points indicated in the figure.

NOTE:
If there is clutch fluid leakage from the piston in the clutch release cylinder, there is clutch fluid in the boot of clutch release cylinder.
If there is clutch fluid leakage, repair or replace the malfunctioning location.
Clutch Fluid Inspection [C66 M R]
Clutch Fluid Replacement/Air Bleeding [C66 M R]Service Publications
Service Publications
Factory-authorized Mazda service publications are available for owners who wish
to do some of their own maintenance and repair.
When requesting any of our publications through an Authorized Mazda Dealer, refer
to the chart below.
If they do not have what you need in stock ...
Master Cylinder Removal/Installation
1. Remove the battery..
2. Remove in the order indicated in the table.
3. Install in the reverse order of removal.
4. After installation, add brake fluid, bleed the air, and inspect for fluid
leakage..
1
Brake fluid level sensor connector
2
...
Air Intake Actuator Inspection [Full Auto Air Conditioner]
1. Connect battery positive voltage to air intake actuator terminal B (or C),
connect terminal C (or B) to ground, and then verify that the air intake actuator
operates as shown in the table.
If the operation condition is not normal, replace the air intake actuator.
...