Section 3 - On The Water
90-864195070 JUNE 2007 Page 53
!
WARNING
Operating a boat or engine with impact damage can result in product damage, serious
injury, or death. If the vessel experiences any form of impact, have an authorized Mercury
Marine dealer inspect and repair the vessel or power package.
Drive Unit Impact Protection
The power trim hydraulic system is designed to provide impact protection for the sterndrive
unit. If a submerged object is struck while the boat is moving forward, the hydraulic system
will cushion the kickup of the sterndrive unit as it clears the object, reducing damage to the
unit. After the sterndrive unit has cleared the object, the hydraulic system allows the
sterndrive unit to return to its original operating position, preventing loss of steering control
and engine overspeed.
Use extreme caution when operating in shallow water or where underwater objects are
known to be present. No impact protection is provided in reverse; use extreme care to
prevent striking submerged objects while operating in reverse.
IMPORTANT: Impact protection system cannot be designed to ensure total protection from
impact damage under all conditions.
Operating With Low Water Inlets In Shallow Water
mc75827-1
a
a - Low Water Inlets
NOTICE
Operating in shallow water can cause severe engine damage due to clogged water inlets.
Ensure that the water inlets on the gearcase do not ingest sand, silt, or other debris,
which can restrict cooling water supply to the engine.
Extreme care should be exercised when operating a boat equipped with low water inlets
while maneuvering in shallow water. Also, avoid beaching a boat with the engine operating.
Conditions Affecting Operation
Weight Distribution (Passengers and Gear) Inside the Boat
Shifting weight to rear (stern):
• Generally increases speed and engine RPM
• Causes bow to bounce in choppy water
• Increases danger of following wave splashing into the boat when coming off plane
• At extremes, can cause the boat to porpoise
Shifting weight to front (bow):
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