Trim Tab - TOHATSU MD 70-90C2 Service Manual

Service Information
Propeller (No. of Blades x Diameter x Pitch)
［in/mm］

13) Trim Tab

Adjustment of trim tab angle
After installing outboard motor on the boat, use trim tab to
achieve balance between port and starboard steering
loads. Loosen trim tab nut 2, adjust angle of trim tab 1 as
described below, and then tighten the nut to specified
torque.
Trim Tab Nut 2 :
13 N · m (9 lb · ft) [1.3 kgf · m]
Example of Adjustment
å If it is necessary to steer to starboard to make boat run
straight or if boat steers itself to port when steering is
held amidships, move trailing edge of trim tab to port
side, or
∫ If it is necessary to steer to port to make boat run
straight or if boat steers itself to starboard when
steering is held amidships, move trailing edge of trim
tab to starboard side.
Change trim tab angle a little for each test run and
repeat the process several times until the best
position is found.
1-14
11P (3 x 14.0 x 11.0）
13P (3 x 14.0 x 13.0)
15P (3 x 13.75 x 15.0)
16P (3 x 13.25 x 16.0)
17P (3 x 13.25 x 17.0)
19P (3 x 13.0 x 19.0)
21P (3 x 12.75 x 21.0)
1
2
2 Trim Tab
Do not reuse.
å
1
2
3
1 Trim Tab
2 Anti-Ventilation Plate
3 Steering Pivot (Swivel Shaft)
［3 x 355 x 279］
［3 x 355 x 330］
［3 x 349 x 381］
［3 x 336 x 406］
［3 x 336 x 432］
［3 x 330 x 483］
［3 x 324 x 533］
3
∫
1
2
3
TLDI 75/90C2 2010