Mazda 6 Service Manual: No.12 lack/loss of power-acceleration/cruise

No.11 engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges

No.13 knocking/pinging-acceleration/cruise

Other materials:

Mazda 6 Service Manual: General procedures
PRECAUTION (CLUTCH) Clutch Pipe Removal/Installation Note A common reservoir is used for the clutch and brake system fluid. 1. If clutch pipes have been disconnected any time during the procedure, add clutch fluid (brake fluid), bleed the air, and inspect for leakage after the procedure ...

Mazda 6 Service Manual: Front buckle removal/installation
1. Perform the following procedure for vehicles with seat belt warning. (1) Disconnect the negative battery cable. (2) Remove the front seat. (3) Disconnect the buckle switch connector. 2. Perform the following procedure for vehicles without seat belt warning. (1) Remove the console. ...