Removing The Water Pump And Shift Rod; Checking The Water Pump; Checking The Shift Rod - Yamaha F4B Service Manual

Removing the water pump and shift
rod
1. Remove the rubber seal a, plates b,
water pump housing c, insert cartridge
d, and impeller e.
2. Remove the gasket f, pin g and outer
plate cartridge h.
a
b
c
d
e
f
h
g
3. Remove the housing i, shift rod j,
rubber seal k, gasket l, and pin m.
k
i
j
m

Checking the water pump

1. Check the water pump housing. Replace
if cracked or deformed.
TIP:
If the engine overheated, check the water
pump housing for deformation.
2. Check the impeller, insert cartridge, and
outer plate cartridge. Replace if cracked
or worn.
3. Check the pin and pin hole in the drive
shaft. Replace if deformed or worn.
b

Checking the shift rod

1. Check the shift rod. Replace if deformed
or worn.
l
Water pump and shift rod
0
1
2
3
4
5
6
7
8
9
10
A
8-6