2002-2008 Four Winns Vista 378 Boat Owners Manual

B.   Induce Planing & Controlling Trim Angle
C.   Trim Tab Maintenance
Trim tabs can also be used to facilitate faster planing and Check the fluid level of the trim tab reservoir often.  Al-
allow better control of the running angle.
ways keep the fluid level between the designated marks
on the trim tab pump-reservoir. Refer to the manufactur-
Before accelerating and trying to gain plane, press both   ers information for specifications on the type of fluid to be
upper trim tab switches. This will cause both trim tabs to  used and other operation and maintenance information.
move downward and force the bow down when running.
E - 8
Moving the trim tabs downward will increase the lift and   The helm station is equipped with a complete set of en-
the boat will achieve plane faster, or stay on plane at a     gine instruments.  These instruments allow the pilot to
lower engine and boat speed.
constantly monitor the operational condition of the  en-
gine. Close observation of these instruments could save
Aftergainingplaneandestablishingcruisingspeed,press-         the engine from damage.
ing both lower trim tab switches will cause both trim tabs
tomoveupwardandwillallowthebowtorise.      Thisshould      The 378 Vista™ has individual gauges in the dash panel
be used to adjust the running attitude of the boat to de-    as standard instrumentation. See Figure E7.
crease the drag at cruising speed or above, or when run-
ning in a following sea.
When running at an engine speed that results in the boat
falling off plane or causes the boat to plane inefficiently,
lowering both tabs slightly (bow down) will improve the
running angle and improve operating efficiency.
Optimum efficiency is obtained when operating at a 3 to
degree running angle. Utilizing too much “Bow Down”
trim tab  can  reduce operating  efficiency  and cause
substantialsteeringandhandlingdifficulties.   Beextremely
carefulwhenrunninginafollowingsea.     Theeffect of trim
tabs is amplified under  such conditions.  Steering and
handling difficulties can result from improper trim tab us-
age, especially in a following sea. If unsure of proper trim
tab positioning, raise the trim tabs to the full-up position.
Figure E7:   378V  Helm  Station
When running at high engine speeds, be sure
the trim tabs are in the full up position. Trim tab
action should be only enough to compensate for
any listing. Trim tab adjustments at high speeds
areextremelycritical.  Bepreparedtoslowdown
should handling difficulties arise.
A.   Tachometer
The tachometers indicate the  speed of the engines in
of the propeller. They may not register zero with the igni-
tion key in the OFF position.
better efficiency will be obtained with the trim tabs in the
full-up position.
Never  exceed the  maximum  recommended
operating RPM  of your engines.   Maintaining
maximum, or close  to maximum RPM for  ex-
378 Vista™  Owner’s Manual
Section E
Product Specification
CategoriesFour Winns Manuals, Four Winns Vista Manuals, Outboard Marine Corporation Manuals
Model Year2002, 2003, 2004, 2005, 2006, 2007, 2008
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- 197 pages
Document TypeOwner's Manual
Product BrandBoats and Cruisers, Four Winns. For support contact your dealer at http://www.fourwinns.com/locate-dealer.aspx
Document File TypePDF
Wikipedia's PageOutboard Marine Corporation
CopyrightAttribution Non-commercial
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2002-2008 Four Winns Vista 378 Boat Owners Manual SKU UPC Model
shaun on Jul 07, 2014. s

great very informative. should not have to fill this out for a manule though

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