Sea Ray 290 Sundancer Owner's Manual Page 61

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4.3
SECTION 4 • BILGE & UNDERWATER GEAR
290 Sundancer
®
BLOWER LOCATION AND HOSE ROUTING (SINGLE ENGINE)
(F
IG. 4.3.1)
BLOWER
HOSE
BLOWER
2. ENGINE AND STERN DRIVE
A. MAINTENANCE AND SERVICE
Engine failure away from shore can be
dangerous. You must follow the recommended
maintenance schedule to best ensure trouble-free
operation of your engine and stern drive.
B. VIBRATION AND CAUSES
Some vibration is to be expected in your boat
because of the action of the engines and the
propeller. But excessive vibration indicates
conditions which must be promptly corrected to
avoid damage. The following are some conditions
which may cause vibrations:
Weeds, ropes, fi shing lines, nets or your own
trailing lines can become wrapped around the
propeller and/or shaft, causing vibration and
loss of speed. Always stop the boat, make
sure it is clear to the rear, and then reverse the
propeller after going through a weedy area to
unwrap and clear away any weeds which may
have accumulated. If this doesn’t clear the
entanglement, and you can’t anchor or moor
the boat in shallow water to get to the stern drive
in the water, the boat will have to be taken out
of the water.
A badly damaged or distorted propeller or shaft
is an obvious cause of vibration. Run at slow
speed to shore. REPLACE IMMEDIATELY.
If the engine mounts fail and the engine can
contact the hull while it is running, vibration will
be felt. Run at slow speed to shore. REPLACE
IMMEDIATELY.
C. IMPACT TO STERN DRIVE
The stern drive can be damaged by impact, either
while trailering or boating. To minimize the possibility
of impact damage while trailering, keep the stern
drive raised to the trailering position.
The hydraulic system used to raise and lower
the stern drive can cushion impact and lessen
damage from head-on impacts to the stern drive
from underwater objects BUT ONLY when the boat
is moving forward. There is no protection if the stern
drive is struck during reverse operation or from an
angle when moving forward.
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