Mazda CX-9 Grand Touring 2009 Manual page 1416

2. Remove the front wheel and tire (RH). (See GENERAL PROCEDURES (SUSPENSION) .)
3. Remove the splash shield (RH).
4. Set a breaker bar on the center of the tensioner pulley as shown.
5. Using the breaker bar, turn the center of the tensioner pulley clockwise to release the tension on the
generator and A/C drive belt.
6. Remove the generator and A/C drive belt.
7. Install the generator and A/C drive belt.
NOTE:
8. Verify that the drive belt auto tensioner indicator mark is within the maximum and minimum belt length.
(See DRIVE BELT INSPECTION [MZI-3.7].)
If the drive belt auto tensioner indicator mark is not within the limit, replace the generator and A/C
drive belt.
9. Install the splash shield (RH).
10. Install the front wheel and tire (RH). (See GENERAL PROCEDURES (SUSPENSION) .)
11. Install the engine cover. (See ENGINE COVER REMOVAL/INSTALLATION [MZI-3.7].)
2008 Mazda CX-9 Grand Touring
2008 ENGINE Mechanical (MZI-3.7) - Mazda CX-9
When the generator and A/C drive belt is replaced with a new one, the
drive belt auto tensioner indicator mark is aligned with the nominal
belt length mark.
Fig. 4: Turning Center Of Tensioner Pulley
Courtesy of MAZDA MOTORS CORP.