Trim Tab; Break-In Operation - TOHATSU TLDI MD 115A SERIES Service Manual

12) 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 port 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.

5. Break-In Operation

Break-in operation is needed for the purpose of
smoothening sliding surfaces between components such
as pistons, piston rings, piston pins, cylinder, and gears.
Break-In Operation...10 Hours
Time 0
Method of break-
in operation
Run at the lowest speed.
TLDI 115A 2007
10 minutes
Throttle Opening: 1/2 of
Trolling or idling
WOT at approximately
3,000 rpm
▽
1
2
2 Trim Tab
Do not reuse.
å
1
2
3
1 Trim Tab
2 Anti-Ventilation Plate
3 Steering Pivot (Swivel Shaft)
2 hours 3 hours
Throttle Opening: 3/4 of Throttle Opening: 3/4 of
WOT at approximately WOT at approximately
4,000 rpm
▽Running at WOT for one
minute every 10 minutes is Running at WOT for short
acceptable. period is acceptable.
3
∫
1
2
3
10 hours
Regular operation
4,000 rpm
▽
1
1-15