Section 5 - Maintenance
90-899883179 OCTOBER 2007 Page 73
2. Turn the adjustment stud and loosen the belt.
3. If a new serpentine drive belt is required, remove the old belt and install a new belt onto
the pulleys.
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 adjusting the stud to adjust the belt deflection.
6. Using one of the 2 methods following, check for correct deflection.
a. Push down with moderate thumb pressure on the longest stretch of belt. Proper
deflection is 13 mm (1/2 in.).
b. Attach the Kent Moore Belt Tension Gauge to the belt. The gauge has different
ranges for new and used belts.
COLOR GUIDE
for
PATENT
2.83918
NEWTONE
NEWTONE
b
a
14980
a - Kent Moore Tension Gauge
b - Serpentine belt
7. While holding the adjustment stud at the correct belt tension, tighten the 16 mm
(5/8 in.) locking nut.
a
b
6119
a - 16 mm (5/8 in.) locking nut
b - 8 mm (5/8 in.) adjusting stud
8. Operate the engine for a short period of time and recheck the belt adjustment.
Flushing the Power Package
Your boat could come equipped with a combination of any of three different types of water
pickups: through the hull, through the transom, and through the sterndrive. The flushing
procedures for these systems are separated into two categories: sterndrive water pickups
and alternative water pickups. Consult your authorized Mercury MerCruiser dealer for
further explanation.
IMPORTANT: Bravo models equipped with closed cooling require dual water pickups and
must be equipped with a through the hull or through the transom pickup in addition to the
sterndrive water inlets.
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