Tilt System; Outline; Reverse Lock System - Yamaha F4B Service Manual

Tilt system

Outline

The incorporated reverse lock system prevents the outboard motor from tilting up when the shift
position is in reverse and the throttle is applied.

Reverse lock system

In this system, the tilt up function will be automatically locked when shifted in reverse. When the shift
lever a is moved to the reverse position, the rod b, which was pushing up the reverse lock c,
moves down. Then, due to the return spring d force, the reverse lock c is forced to move in the
direction a to prevent the outboard motor from tilting up.
The reverse lock system does not operate when the outboard motor is tilted up.
d
a
c
Lubrication system / Tilt system
a
b
Tilt system
0
1
2
3
4
5
6
7
8
9
10
A
2-14