Bennett Marine M80EIC can enhance your boat's performance and comfort with its advanced trim tab control system. Utilize the helm control to adjust the trim tabs and optimize your boat's position in the water, reducing drag, improving fuel efficiency, and enhancing stability. Whether you're navigating rough seas or simply cruising along the shoreline, the M80EIC provides precise control, allowing you to fine-tune your boat's trim for maximum performance and a more enjoyable boating experience.
Bennett Marine M80EIC can enhance your boat's performance and comfort with its advanced trim tab control system. Utilize the helm control to adjust the trim tabs and optimize your boat's position in the water, reducing drag, improving fuel efficiency, and enhancing stability. Whether you're navigating rough seas or simply cruising along the shoreline, the M80EIC provides precise control, allowing you to fine-tune your boat's trim for maximum performance and a more enjoyable boating experience.
M80 / M120 Sport Tab Installation Instructions
For information on installing Bennett helm controls, please visit BennettTrimTabs.com/Installation or call ( ) -1 . 866 894 626
Items Included in Sets
(2) Trim Plane
Assemblies
(1) Hydraulic
Power Unit (HPU)
Hydraulic tubing, wiring, and
hardware
(2)
Hydraulic
actuators
Helm Control (Various options may be included)
Mounting Options
Transom Mount Bottom Mount Recessed Pocket
Basic System Diagrams
Materials & Tools Needed
• Wire Stripper
• Wire Cutters
• 3/32", 3/16", 5/32" &
3/4" Drill Bits
• 1/2" & 7/16"
Wrenches
• Tape Measure
• Automatic
Transmission Fluid
• Small Funnel
• Electric Drill
• #2 & 3 Phillips
Screw Drivers
• 2-ft. Straight Edge
• 3M 5200 Marine
Grade Sealant
Step 1: TRIM TAB & ACTUATOR INSTALLATION
Position the trim tabs against the transom and check to
see that the upper mounts of the hydraulic actuators do
not center on an inside obstruction. If they do, reposition
the tabs slightly outboard. The further outboard the tabs
are mounted, the greater the lateral (side-to-side) control.
Position the tabs 3" to 4" from the chine (side of boat) and
run them towards the centerline of the boat (See Fig. 1). Boats
with outboard motors or inboard/outboards (I/Os) must
maintain a minimum of 8" from the centerline of outboard
or stern drive unit to the closest edge of the trim tabs.
Boats with inboard motors may utilize the entire run of the
transom. Note: If the inside of the transom is inaccessible
due to fuel tank, flotation, or other obstruction, call Bennett
Marine for alternate installation options at (866) 894-1626.
For Boats Kept In Salt Water: To provide protection from
electrolytic corrosion, a zinc anode must be applied to each
tab. Do not ground tabs to other underwater appendages.
Failure to provide zinc anode protection can result in
the trim tabs being quickly damaged by electrolysis. Call
Bennett Marine for more information.
Step 2
Attach the mounting plates and trim tab with #10 x 1-1/4"
stainless steel screws 1/4" above the hull bottom. (See
Figure 2) Using the backing plate as a template, mark screw
hole locations. Drill the mounting plate holes using a 5/32"
(At least 8" from the
centerline of drive)
Tabs may be mounted over
the strakes if necessary
8"
Chine
3"- 4"
Standard “V” Hull Installation Figure 1
3-4" From Chine (Side of Boat)
1/4"
Backing
Plate
Hinge
Plate
Transom
Trim Tab
3-4" From Chine (Side of Boat)
1/4"
Backing
Plate
Hinge
Plate
Transom
Trim Tab
Figure 3Figure 2
Actuators
& Tabs
HPU
(Pump)
Rocker
Control
Actuators
& Tabs
HPU
(Pump)
Relay Module
/Control Box
(Some systems)
Indicator
Control
Instructions continued on the rear page...
Various
options may
be included
A shim must be
used on a curved
transom.
Call Bennett
Marine for more
information.
drill bit. Assemble backing plates and hinge plates, dip
screws in 3M 5200 (or equivalent marine epoxy) before
running in. Slide trim tab between backing plate and hinge
plate before running screws tight. Snug screws down to
secure mounting plates and trim tab to transom. Aluminum
boats should use machine screws and nuts (not included)
instead of the enclosed #10 x 1-1/4" self-tapping stainless
steel screws. If the transom is curved, a shim must be made
of a suitable material to provide a flat mounting surface (see
figure 3 on the previous page).
Call Bennett Marine for more information.
Step 3
Secure the lower hinge of each actuator to the tab with the
1/4-20 x 3/4" Phillips head machine screws. Using a straight
edge under the hull bottom, set the “negative angle” of the
tab’s trailing edge with a negative angle
of 5/8" (See figure 4.)
Step 4
With tabs set at a 5/8"
negative angle, position the
upper mounts of the actuators
against the transom. Slide the
attached actuator template
(see reverse page) behind
upper mount, align and tape
to transom. It is not necessary
that the upper mounts lie flat
against the transom as the
actuator neck has the ability to flex far more than necessary
(See Figure 5). The straight edge may now be removed. Drill
holes accurately as indicated on templates. Drilling a small
pilot hole first helps you locate accurate centers.
Step 5
Screw the brass fitting with
the attached tubing into the
upper mount of the actuator.
Tighten the fitting only snug
with a 7/16" wrench. Do not
attempt to “bottom out” the
fitting.
(See figure 6)
Step 6
Feed the taped end of the tubing through the 3/4" hole
in the transom. Apply sealant on the mounting surface
of the actuators and around the brass fitting. Secure
the actuator upper to the transom with the #14x x 1/12"
screws.
Step 7: INSTALLING THE HPU
Remove plug from filler
stack located at the front left
corner of the reservoir. Fill
the reservoir to “Full Line”
using any type automatic
transmission fluid (ATF).
Install Hydraulic Power Unit
(HPU) in a convenient location
with a dry environment.
Important: The HPU must
be mounted in a dry enough
location to avoid submersion and drenching. Allow space
above the HPU so that it may be slid into its mounting
bracket (about 3"). Lay out upper holes on HPU
mounting bracket 4-5/8" apart and start #10 x 1" screws
using 5/32" pilot holes. Then drill 5/32" pilot holes for
lower screws and secure bracket. Slide HPU into bracket.
Step 8
With plastic hangers or cable ties, secure hydraulic
tubing along hullside or bulkheads to HPU. Make the
port and starboard hydraulic tube lengths as equal as
possible. When facing HPU, the brass fitting on the left
of the pump face connects with the tubing from the port
actuator, the fitting on the right connects with tubing
from the starboard actuator. These fittings are identified
“P” & “S” for port and starboard by small letters directly
above each one. To connect tubing to the pump, insert
tubing through the nut with ferrule fitting and push into
the pump-face fitting until it bottoms. While continuing
to bottom the tubing in the fitting, tighten nut “finger
tight,” then one full turn with a 1/2" wrench … no more.
Use the tube bending clip at desired 90 degree bends in
the tubing to prevent kinking. Connect the HPU ground
wire to any convenient ground. Then run the wiring
harness from the HPU to the helm.
Step 9: INSTALLING THE HELM CONTROL
The M80/M120 Sport Tab kits are available with various
helm control options. Please follow the helm control
instructions included with your particular kit. Helm
control installation manuals can also be found at
BennettTrimTabs.com/Install.
Step 10: BLEEDING THE SYSTEM
Using the control, hold the “Bow Down” position for 15
seconds, then “Bow Up” for 15 – 20 seconds. Repeat
3 times. This will purge any air from the system. No
bleeding is necessary. Place both trim tabs in the full
down position and check the hydraulic system for leaks.
Bring the tabs in full up position and check fluid level.
Add ATF if necessary.
1/2" for
9" Chord
Position the tab
1/4" above the
bottom of the hull
Rear view of the trim tab
5/8" for
12" Chord
Straight Edge
Measure
5/8"
Transom
Straight Edge
5/8"
Figure 4
Figure 5
Figure 6
1/2" for
9" Chord
Position the tab
1/4" above the
bottom of the hull
Rear view of the trim tab
5/8" for
12" Chord
Straight Edge
Measure
5/8"
Transom
Straight Edge
5/8"
Hydraulic
tubing
Use a 7/16”
wrench to
tighten the
fitting here.
Do not
over-tighten.
Have questions?
We’re here to help. Call us at (866) 894-1626 for assistance.
Must be printed or copied
at 100% scale
1"
ACTUATOR DRILLING TEMPLATE
Ø 3/4
"
Ø 5/16
"
Ø 3/16
"
Ø 3/16
"
Ø 3/16
"
REVISIONS
ZONE
REV.
DESCRIPTION
DATE
APPROVED
DO NOT SCALE DRAWING
Actuator Mounting Template
SHEET 1 OF 1
UNLESS OTHERWISE SPECIFIED:
SCALE: 1:1
WEIGHT:
REV
DWG. NO.
A
SIZE
TITLE:
NAME
DATE
COMMENTS:
Q.A.
MFG APPR.
ENG APPR.
CHECKED
DRAWN
FINISH
MATERIAL
INTERPRET GEOMETRIC
TOLERANCING PER: ANSI Y-14
DIMENSIONS ARE IN INCHES
TOLERANCES:
FRACTIONAL
1/16
ANGULAR: MACH
BEND
TWO PLACE DECIMAL
.01
THREE PLACE DECIMAL
.005
APPLICATION
USED ON
NEXT ASSY
PROPRIETARY AND CONFIDENTIAL
THE INFORMATION CONTAINED IN THIS
DRAWING IS THE SOLE PROPERTY OF
Bennett Marine Inc. ANY REPRODUCTION
IN PART OR AS A WHOLE WITHOUT THE
WRITTEN PERMISSION OF
Bennett Marine Inc. IS PROHIBITED.
5
4
3
2
1
Bennett Marine
550 Jim Moran Blvd
Deerfield Beach, FL 33442
Optional
sensor wire
Ø 3/4
"
Ø 5/16
"
Ø 3/16
"
Ø 3/16
"
Ø 3/16
"
REVISIONS
ZONE
REV.
DESCRIPTION
DATE
APPROVED
DO NOT SCALE DRAWING
Actuator Mounting Template
SHEET 1 OF 1
UNLESS OTHERWISE SPECIFIED:
SCALE: 1:1
WEIGHT:
REV
DWG. NO.
A
SIZE
TITLE:
NAME
DATE
COMMENTS:
Q.A.
MFG APPR.
ENG APPR.
CHECKED
DRAWN
FINISH
MATERIAL
INTERPRET GEOMETRIC
TOLERANCING PER: ANSI Y-14
DIMENSIONS ARE IN INCHES
TOLERANCES:
FRACTIONAL
1/16
ANGULAR: MACH
BEND
TWO PLACE DECIMAL
.01
THREE PLACE DECIMAL
.005
APPLICATION
USED ON
NEXT ASSY
PROPRIETARY AND CONFIDENTIAL
THE INFORMATION CONTAINED IN THIS
DRAWING IS THE SOLE PROPERTY OF
Bennett Marine Inc. ANY REPRODUCTION
IN PART OR AS A WHOLE WITHOUT THE
WRITTEN PERMISSION OF
Bennett Marine Inc. IS PROHIBITED.
5
4
3
2
1
Bennett Marine
550 Jim Moran Blvd
Deerfield Beach, FL 33442
Ø 3/4
"
Ø 5/16
"
Ø 3/16
"
Ø 3/16
"
Ø 3/16
"
REVISIONS
ZONE
REV.
DESCRIPTION
DATE
APPROVED
DO NOT SCALE DRAWING
Actuator Mounting Template
SHEET 1 OF 1
UNLESS OTHERWISE SPECIFIED:
SCALE: 1:1
WEIGHT:
REV
DWG. NO.
A
SIZE
TITLE:
NAME
DATE
COMMENTS:
Q.A.
MFG APPR.
ENG APPR.
CHECKED
DRAWN
FINISH
MATERIAL
INTERPRET GEOMETRIC
TOLERANCING PER: ANSI Y-14
DIMENSIONS ARE IN INCHES
TOLERANCES:
FRACTIONAL
1/16
ANGULAR: MACH
BEND
TWO PLACE DECIMAL
.01
THREE PLACE DECIMAL
.005
APPLICATION
USED ON
NEXT ASSY
PROPRIETARY AND CONFIDENTIAL
THE INFORMATION CONTAINED IN THIS
DRAWING IS THE SOLE PROPERTY OF
Bennett Marine Inc. ANY REPRODUCTION
IN PART OR AS A WHOLE WITHOUT THE
WRITTEN PERMISSION OF
Bennett Marine Inc. IS PROHIBITED.
5
4
3
2
1
Bennett Marine
550 Jim Moran Blvd
Deerfield Beach, FL 33442
Optional
sensor wire
Ø 3/4
"
Ø 5/16
"
Ø 3/16
"
Ø 3/16
"
Ø 3/16
"
REVISIONS
ZONE
REV.
DESCRIPTION
DATE
APPROVED
DO NOT SCALE DRAWING
Actuator Mounting Template
SHEET 1 OF 1
UNLESS OTHERWISE SPECIFIED:
SCALE: 1:1
WEIGHT:
REV
DWG. NO.
A
SIZE
TITLE:
NAME
DATE
COMMENTS:
Q.A.
MFG APPR.
ENG APPR.
CHECKED
DRAWN
FINISH
MATERIAL
INTERPRET GEOMETRIC
TOLERANCING PER: ANSI Y-14
DIMENSIONS ARE IN INCHES
TOLERANCES:
FRACTIONAL
1/16
ANGULAR: MACH
BEND
TWO PLACE DECIMAL
.01
THREE PLACE DECIMAL
.005
APPLICATION
USED ON
NEXT ASSY
PROPRIETARY AND CONFIDENTIAL
THE INFORMATION CONTAINED IN THIS
DRAWING IS THE SOLE PROPERTY OF
Bennett Marine Inc. ANY REPRODUCTION
IN PART OR AS A WHOLE WITHOUT THE
WRITTEN PERMISSION OF
Bennett Marine Inc. IS PROHIBITED.
5
4
3
2
1
Bennett Marine
550 Jim Moran Blvd
Deerfield Beach, FL 33442
-
1
-
2
-
3
Bennett Marine M80EIC Installation guide
- Type
- Installation guide
Bennett Marine M80EIC can enhance your boat's performance and comfort with its advanced trim tab control system. Utilize the helm control to adjust the trim tabs and optimize your boat's position in the water, reducing drag, improving fuel efficiency, and enhancing stability. Whether you're navigating rough seas or simply cruising along the shoreline, the M80EIC provides precise control, allowing you to fine-tune your boat's trim for maximum performance and a more enjoyable boating experience.
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