1. Remove the clamps and vacuum hose.
2. Apply both suction and pressure to the engine-side hose, and verify that air blows only toward that side.

Air bleeding
Brake pedal inspectionMazda 6 Service Manual: Transaxle oil inspection
1. Park the vehicle on level ground.
2. Remove the oil level plug and washer.
3. Verify that the oil is near the brim of the plug port.
If the oil level is lower than the low level, add the specified amount
and type of oil through the oil level plug hole.
Specified oil grade
API Ser ...
Mazda 6 Service Manual: Refrigerant system service procedures
GAS CHARGING SET INSTALLATION
1. Fully close the valves of the SST (49 C061 001).
2. Connect the SSTs (49 C061 002, 49 C061 003) to the high- and
low-pressure side joints of the SST (49 C061 001).
3. Connect the SSTs (49 C061 006A, 49 C061 007) to the ends of the
SSTs (49 C061 002, 49 C061 00 ...