MerCruiser Axius 350 MAG User Manual page 105

3. Attach the Kent Moore belt tension gauge, or equivalent, to the belt.
4. Put a wrench on the adjustment stud 16 mm (5/8 in.) locking nut.
5. Use a 8 mm (5/16 in.) socket and tighten the adjusting stud to adjust the belt tension.
6. Check the gauge for correct belt tension. The gauge has different ranges for new and
used belts.
.
Serpentine belt tension using a tension gauge
Used belt
New belt
7. While holding the adjustment stud at the correct belt tension, tighten the 16 mm
(5/8 in.) locking nut.
8. Operate the engine for a short period of time and recheck the belt adjustment.
90-899883234 JANUARY 2008
a
Kent Moore belt tension gauge shown, all similar
a - Kent Moore belt tension gauge
b - Serpentine belt
a
a - 16 mm (5/8 in.) locking nut
b - 8 mm (5/16 in.) adjusting stud
b
32544
356–378 N (80–85 lbf)
467–489 N (105–110 lbf)
b
32545
Section 5 - Maintenance
Page 97