169
Power Trim/Trim Tabs
Outboard boats have
the ability to angle in
or out their drive unit in
relationship to the transom.
This is accomplished by
hydraulic shocks located
on the lower unit housing
along with an electrical
sender unit that reads the drive angle and sends
information to the chart plotter showing a reading.
Purpose of Power Trim
The purpose of the power trim/tilt is to enable the
operator to change the angle of the outboard drive
while at the helm. Changing the angle of the drive
or “trimming” provides the following benefits:
l. Improves acceleration onto a plane.
2. Maintains boat on plane at reduced throttle
settings.
3. Increases fuel economy.
4. Provides smoother ride in choppy water.
5. Increases top speed.
In short, it is a way of fine-tuning the performance
of your boat and will enable you to get the most
efficient and comfortable ride possible, whatever
the conditions.
Using Power Trim
The power trim is normally used prior to accelerating
onto a plane, after reaching the desired RPM or
boat speed and when there is a change in water or
boating conditions.
Position passengers and equipment in the boat so
that the weight is balanced correctly fore and aft as
well as side to side. Trimming will not compensate
for an unbalanced load.
To operate the trim, push the switch until the desired
bow position is reached. The trim may be operated
at any boat speed or at rest. Avoid operating the trim
system when running in reverse. Observe the trim/
tilt gauge which indicates the boat’s bow position
achieved by the trim angle of the vertical drive unit.
“Bow-Up” corresponds to the upper portion of
the trim range on the gauge while “Bow Down”
corresponds to the lower portion of the trim range
on the gauge.
To determine the proper trim angle, experiment a
little until you are familiar with the changes in your
boat. The vessel will be properly trimmed when the
trim angle provides the best boat performance for
the particular operating conditions. A trim position
that provides a balanced steering load is desirable.
To familiarize yourself with the power trim, make test
runs at slower speeds and at various trim positions
to see the effect of trimming. Note the time it takes
for the boat to plane. View the chart plotter screen,
tachometer and speedometer readings as well as
the ride action of the boat.
Operation In “Bow Up”
The “Bow Up” or out position is normally used for
cruising, running with a choppy wave condition, or
running at full speed. Excessive “bow up” trim will
cause propeller ventilation resulting in propeller
slippage. Use caution when operating in rough
water or crossing another boat’s wake.
Summary of Contents for 38 SAV 2019
Page 1: ...1 REGAL 38 SAV OWNER S MANUAL NOVEMBER 2019 EDITION...
Page 32: ...32 Navigation Light Rules...
Page 46: ...46 Navigation Rules...
Page 49: ...49 Lateral Aids...
Page 50: ...50 Channel Markers Regulatory Markers...
Page 52: ...52...
Page 53: ...53...
Page 153: ...153 Engine Starting Stopping Controls...
Page 208: ...208 TV SYSTEM COMPONENTS WIRING TV SYSTEM COMPONENTS WIRING...
Page 225: ...225 Dockside Cords...
Page 259: ...259 GENERAL ARRANGEMENTS...
Page 260: ...260 TOP VIEW...
Page 261: ...261 DOMESTIC SEATING OCCUPANCY...
Page 262: ...262 SLING LOCATIONS FOR LIFTING...
Page 265: ...265 YAMAHA OPTIMUS STEERING SYSTEM TWIN O B SHOWN...
Page 266: ...266 YAMAHA OPTIMUS FUEL HARNESS...
Page 267: ...267 GARMIN ETHERNET NETWORK NOTE GARMIN ETHERNET NETWORK LOCATED BEHIND GARMIN STBD PLOTTER...
Page 268: ...268 YAMAHA OPTIMUS NMEA NETWORK...
Page 269: ...269 AMPLIFIER SPEAKER WIRING...
Page 270: ...270 HULL HARDWARE AFT THRU HULLS...
Page 271: ...271 DECK HARDWARE OVERVIEW...
Page 272: ...272 DECK HARDWARE 1 AFT...
Page 273: ...273 DECK HARDWARE 2 BOW...
Page 274: ...274 DECK HARDWARE 4 PORT...
Page 275: ...275 DECK HARDWARE 5 TRANSOM...
Page 276: ...276 AMPLIFIER RCA WIRING SETTINGS...
Page 277: ...277 BATTERY MANAGEMENT PANEL COMPONENTS...
Page 278: ...278 BATTERY MANAGEMENT PANEL SWITCHES HARNESSES...
Page 279: ...279 BATTERY MANAGEMENT PANEL POWER CABLE OVERVIEW...
Page 280: ...280 BATTERY MANAGEMENT PANEL POWER CABLES 1...
Page 281: ...281 BATTERY MANAGEMENT PANEL POWER CABLES 2...
Page 282: ...282 BATTERY MANAGEMENT PANEL POWER CABLES 3...
Page 283: ...283 DECK HARNESS ROUTING 1...
Page 284: ...284 DECK HARNESS ROUTING 2...
Page 285: ...285 DECK HARNESS ROUTING 3...
Page 286: ...286 DECK HARNESS ROUTING 4...
Page 287: ...287 DECK HARNESS ROUTING 5...
Page 288: ...288 D C DISTRIBUTION PANEL FRONT...
Page 289: ...289 D C DISTRIBUTION PANEL REAR...
Page 290: ...290 HELM D C BREAKER PANEL FRONT...
Page 291: ...291 HELM BREAKER PANEL REAR...
Page 292: ...292 120 VOLT AC SHIP S MAIN PANEL FRONT...
Page 293: ...293 120 VOLT AC SHIP S MAIN PANEL REAR...
Page 294: ...294 SEAKEEPER WIRING...
Page 295: ...295 SUMP BILGE PUMP FLOAT SWITCH WIRING...