™
After getting over the hump, accelerate until reaching a
comfortable plane, then throttle down to cruising speed.
This also will provide for better fuel efficiency.
5. A good practice is to get underway (especially when
fully loaded or pulling a skier) with the unit trimmed
all the way DN (under). After the boat is on plane,
adjust the trim out slightly to obtain the proper bow
attitude and engine speed.
T - 7
TRIMMING YOUR BOAT
A. Tilt/Trim Control Switches
6. Trim also affects propeller selection and fuel effi-
ciency.All models should be “propped” to be in the
upper half of the maximum RPM range with the boat
lightly loaded and the drive trimmed up to maxi-
mum. This configuration allows the engine to oper-
atewithintherecommendedRPMrangewithaheavy
load.
NOTE: Trim refers to the angle of the lower unit in rela-
tion to the bottom of the boat. With respect to trimming,
the words in, down, under, and forward, have the same
meaning as do up, out, and aft.
1.
The standard trim control switch is located on the
control lever handle.
The power unit should never be trimmed up to a
point where the propeller cavitates (or slips).Arapid
increase in engine RPM’s is evidence of cavitation.
If this occurs accidentally while running at full
throttle, immediately lower the drive trim and re-
duce the throttle until the slipping stops. If neces-
sary, have your dealer reset the trim limit switch (if
provided) to avoid overtrimming in the future.
2
. The switch controls the position of the stern drive or
outboard motor. Proper trim is very important in boat-
ing.
3
. In the case of low or heavy bow attitude, the boat
tends to “plow” (Figure 7.2). The lower unit is trimmed
too far under or forward. Trim the unit UP (out) to
correct this situation.
If the prop slips at lower planing speeds, the drive
may be trimmed too high. Immediately lower the
drive unit until the prop grabs again to restore effi-
ciency.
4
. If the bow is too high, the boat tends to “porpoise”
(
Figure 7.4). The drive unit is trimmed up or out too
far. Trim DN (in) to correct.
7.
Trimming out, in addition to raising the bow, also
lifts the boat higher, gaining speed because less
hull is in the water.
Figure 7.2
DN
TRIM
UP
8. The trailering position of some stern drives is con-
trolled by a separate switch on the dash switch
panel or throttle/shift control. Do not activate this
switch while engine is running. Doing so can
severely damage the lower unit and engine.
TRIM
INCORRECT
Causes boat to "plow"
Figure 7.3
NOTE: Refer to the control instructions regarding the
power trim controls installed on your boat.
DN
TRIM
UP
TRIM
T - 8
NAVIGATION LIGHTS
CORRECT
Although night activities are limited, cruising at night
can be very pleasurable. It can also be dangerous if you
don’t pay close attention to water levels and obstacles.
Be especially careful of shallow waters and watch for
submerged debris, rocks and other obstacles in the
water. Your navigation lights are intended only to pre-
vent collision, not to improve your night vision.You may
choose to use a spotlight instead.
Gives maximum performance
Figure 7.4
DN
TRIM
UP
TRIM
INCORRECT
Causes boat to "porpoise"
NOTE: It is illegal to use your spotlight as a headlight.
Figures 7.2-7.4: Trimming the Boat with Outdrive
Use it only temporarily to check the position of your
Funship™ Owner’s Manual
Section T
Page6
| Categories | Four Winns Freedom Manuals, Four Winns Funship Manuals, Four Winns Horizon Manuals, Four Winns Manuals, Outboard Marine Corporation Manuals |
|---|---|
| Tags | Four Winns Funship 214, Four Winns Funship 234, Four Winns Funship 264 |
| Model Year | 2003, 2004, 2005 |
| Download File |
|
| Document Type | Owner's Manual |
| Language | English |
| Product Brand | Boats and Cruisers, Four Winns. For support contact your dealer at http://www.fourwinns.com/locate-dealer.aspx |
| Document File Type | |
| Publisher | fourwinns.com |
| Wikipedia's Page | Outboard Marine Corporation |
| Copyright | Attribution Non-commercial |
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