Mazda 6 Service Manual: No.23 a/c does not work sufficiently

No.22 vibration concerns (engine)

No.24 a/c is always on or a/c compressor runs continuously

Other materials:

Mazda 6 Service Manual: Manual Transaxle Shift Pattern
  The shift pattern of the transaxle is conventional, as shown. Depress the clutch pedal all the way down while shifting; then release it slowly. Your vehicle is equipped with a device to prevent shifting to R (reverse) by mistake. Push the shift lever downward and shift to R.   ...

Mazda 6 Service Manual: Base removal
1. Remove the rearview mirror. 2. Wind each end of a wire around a bar. Warning Using a SST (piano wire) with bare hands can cause injury. Always wear gloves when using a SST (piano wire). Note Use a long sawing action to spread the work over the whole length of the SST (piano w ...