Flushing The Power Package-Towsports; The Boat Out Of The Water - Mercury 350 Scorpion ECT MerCruiser Operation & Maintenance Manual

5. Use an 8 mm (5/16 in.) socket and tighten the adjusting stud to adjust the belt deflection.
6. Using one of the two 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 belt tension gauge to the belt. The gauge has different ranges for new and used belts.
b
7. While holding the adjustment stud at the correct belt tension, tighten the 16 mm (5/8 in.) locking nut.
a
8. Operate the engine for a short period of time and recheck the belt adjustment.
Flushing the Power Package—TowSports

The Boat Out of the Water

IMPORTANT: Flushing the power package is most effective when performed with the boat out of the water.
IMPORTANT: Flushing is needed if the engine package has been operated in salty, brackish, mineral‑laden, or polluted water.
For best results flushing is recommended after each outing and before cold weather and extended storage.
Rotating propellers can cause serious injury or death. Never operate the boat out of the water with a propeller installed.
Before installing or removing a propeller, place the drive unit in neutral and engage the lanyard stop switch to prevent the
engine from starting. Place a block of wood between the propeller blade and the anti‑ventilation plate.
1.
Models with Walter V‑Drive transmissions:
a. Close the seacock, if equipped, and then disconnect the seawater inlet hose from the transmission seawater inlet
fitting.
90-8M0099729 NOVEMBER 2014
eng
a
a - 8 mm (5/16 in.) adjusting stud
b - 16 mm (5/8 in.) locking nut
b
6119
WARNING
!
a - Belt tension gauge
b - Serpentine belt
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Section 5 - Maintenance
Page 57