Yamaha F70AET Rigging Manual page 15

MOUNTING THE OUTBOARD
MOTOR
2. Adjust the height of outboard motor so that
the anti-cavitation plate is positioned to the
boat transom bottom, or lowered within 25
mm (1 in.).
For planing boats, the anti-cavitation plate
should be positioned to the boat transom
bottom or slightly higher.
Single engine application
0~25 mm (1 in.)
Twin engine application/Quad engine
application
0~25 mm
(a)
(1 in.)
Twin engine application
Quad engine application
Triple engine application
0~25 mm
(a)
(1 in.)
(a): Anti-cavitation plate
(a)
C/L
0~25 mm
(1 in.)
0~25 mm
(1 in.)
C/L
0~25 mm
0~25 mm (1 in.)
(1 in.)
* Due to combination of a boat type and an engine
type, the mount height of outboard motor varies.
Therefore, the complete information is impossible
to describe here.
For further information, see the instructions
issued by boat manufacturer, or ask to the manu-
facturer.
3. When the outboard motor mount position
has been determined, mark the 4 symmetri-
cal mount hole positions onto the boat tran-
som. Make the mount holes of 13 mm (0.5
in.) vertically on the marking points.
* To make the mounting holes easier, use the drill-
ing plate (P/N: 90890-06783 or YB-34465 for US).
Ex: Drilling plate (90890-06783)
C/L
Height position of
anti-cavitation plate
1-7
90
(H)
(H)
(H): Motor transom height
To be continued.