26
Chapter 5
When trimmed or in the bow down position, the bow spray
is farther forward, the wake and rooster tail are smaller,
and positioned further behind the vessel. Also, when
trimmed you will notice that the tachometers show an
increase in rpm’s.
Using
Stern Drive Power Trim With Trim Tabs
Adjust the
trim tabs
to achieve a planing
attitude. Use the
power trim to
position the prop
path parallel to the
water flow. At this
point the trim tabs
may need a fine
adjustment.
One advantage of
the trim tab system is that they allow trimming of the hull
while the power trim results in trimming the props.
Porpoising is a running condition where the bow “bounces”
up and down similar to a porpoise’s swimming motion.
This condition is normally caused by the trim being too
far “up” as indicated on the trim gauge. Press “bow down”
in one-half second bursts and the porpoising should recede
and the vessel speed should increase. Only a small amount
of “bow down tab” is normally necessary to make the vessel
bow actually go down.
Rectifying A List
Your vessel can use the trim tabs to
rectify a list. The trim tabs adjust the
boat’s attitude in the direction the
helm rocker switch is pushed.
If the port bow is high, push the left-
hand “bow down” direction on the
dash rocker and the port bow will
lower. If the starboard bow is high,
push the right-hand “bow down”
direction and the starboard bow is
lowered.
Porpoising
Summary of Contents for 30 EXPRESS
Page 1: ...30 EXPRESS OWNER S MANUAL...
Page 2: ...784022 OWNER S MANUAL 30 EXPRESS 12 2012...
Page 30: ...11 Safety On Board NAVIGATION LIGHT RULES...
Page 41: ...Chapter 2 22 Notes...
Page 44: ...3 Rules Of The Road NAVIGATION RULES...
Page 85: ...28 Chapter 5 Notes...
Page 105: ...4 Chapter 7...
Page 106: ...5 Equipment Operation...
Page 107: ...6 Chapter 7...
Page 108: ...7 Equipment Operation...
Page 109: ...8 Chapter 7...
Page 110: ...9 Equipment Operation...
Page 111: ...10 Chapter 7...
Page 117: ...16 Chapter 7...
Page 126: ...25 Equipment Operation ROTARY ENCODER AND MENU KEY...
Page 127: ...26 Chapter 7 USING THE ROTARY ENCODER AND MENU KEY...
Page 158: ...57 Equipment Operation BACKING A TRAILER 1 2 3 4 LAUNCHING RAMP...
Page 161: ...60 Chapter 7 Notes...
Page 195: ...34 Chapter 8 Notes...
Page 204: ...9 Troubleshooting TOILET SYSTEM DIAGNOSTIC CHART...
Page 209: ...14 Chapter 9...
Page 219: ...6 Chapter 11 Notes...
Page 221: ...2 Chapter 12...
Page 224: ...5 Technical Information 30 Express Deck Overview 30 Express Cabin Overview...
Page 225: ...Technical Information 12 6 30 EXPRESS...
Page 226: ...12 7 Technical Information 30 EXPRESS...
Page 227: ...Technical Information 12 8 30 EXPRESS...
Page 228: ...12 9 Technical Information 30 EXPRESS...
Page 229: ...Technical Information 12 10 30 EXPRESS 30 EXPRESS...
Page 230: ...12 11 Technical Information TYPICAL NEGATIVE GROUND SYSTEM...
Page 231: ...Technical Information 12 12 30 EXPRESS...
Page 232: ...12 13 Technical Information 30 EXPRESS...