Mazda 6 Service Manual: No.7 no shifting

No.6 low maximum speed and poor acceleration no.7 no shifting

No.8 does not shift to fourth gear (4gr)

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: Front lower arm (rear) removal/installation
1. Remove the front crossmember component. (See FRONT CROSSMEMBER REMOVAL/INSTALLATION.) 2. Remove in the order indicated in the table. 3. Install in the reverse order of removal. 4. Inspect the front wheel alignment. (See FRONT WHEEL ALIGNMENT.) Front Lower Arm (Rear) Ball Joint Removal N ...