Yamaha F150B, Service Manual

Page: 286 / 458

8-7
LOWR
Lower unit
Checking the water pump and shift
rod
1. Check the water pump housing. Replace
if deformation.
TIP:
If the engine overheated, the inside of the
water pump housing may be deformed,
therefore make sure to remove the insert car-
tridge when checking the housing.
2. Check the impeller, insert cartridge, and
outer plate cartridge. Replace if cracked
or worn.
3. Check the Woodruff key and the keyway
on the drive shaft. Replace if deformed or
worn.
4. Check the shift rod. Replace if cracked or
worn.
Assembling the water pump housing
1. Install the seal
a
and cover
b
.
2. Install a new O-ring
c
into the water
pump housing
d
.
3. Install the insert cartridge
e
aligning
a
on the insert cartridge with
b
on the
water pump housing
d
.
b
a
c
d
e
a
b