Checking The Lower Unit For Air Leakage - Yamaha F225F Service Manual

1. Install the plate a, rubber seal b, and
seal plate c.
2. Install the dowels d, a new gasket e,
the outer plate cartridge f, the cover g,
and the Woodruff key h.
g
f
e
3. Align the slot a in the impeller i with
the Woodruff key h, and then install the
impeller i.
i
4. Install a new O-ring j.
5. Install the water pump housing k.
NOTICE: Do not turn the drive shaft
counterclockwise.
water pump impeller
damaged.
Drive shaft and lower case (regular rotation model)
b
c
d
d
a
h
a
h
j
Otherwise, the
could be
k
TIP:
While turning the drive shaft clockwise, push
the water pump housing down to install it.
Checking the lower unit for air
leakage
1. Remove the check screw a, and then
install the special service tool b.
a
Leakage tester b: 90890-06840
2. Apply the specified pressure. Check that
the pressure is maintained in the lower
unit for 10 seconds
NOTICE: Do not overpressurize the
lower unit. Otherwise, the oil seals
could be damaged.
Holding pressure:
68.6 kPa (0.686 kgf/cm
0
1
2
3
4
5
6
b
7
8
9
or more.
10
2 , 9.9 psi)
A
8-32