CAUTION:
Do not allow clutch fluid 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. Pump the clutch pedal a few times.
2. 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]Stop Vehicle in Safe Place Immediately
If any of the following warning lights turns on, the system may have a
malfunction. Stop the
vehicle in a safe place immediately and contact an Authorized Mazda Dealer.
...
Valve Clearance Inspection [Mzr 2.0, Mzr 2.5]
1. Remove the battery cover..
2. Disconnect the negative battery cable..
3. Remove the plug hole plate..
4. Disconnect the wiring harness.
5. Remove the ignition coils..
6. Remove the spark plugs..
7. Remove the ventilation hose.
8. Remove the oil level gauge.
9. Remove the cylinder ...
Coupler Component Removal/Installation [Fw6 A EL]
WARNING:
A hot transaxle and ATF can cause severe burns. Turn off the engine and wait
until they are cool.
Always wear protective eye wear when using the air compressor. If the air
compressor is used, any particles of dirt or soiling could spatter and get into
the eyes.
...