Snowmobile Yamaha Phazer PZ50 (2007-2008 year). Manual - part 63

6-11

COOL

WATER PUMP

ASSEMBLY

1. Install:

• Oil seal 1

(to the water pump housing)

NOTE:

• Before installing the oil seal, apply tap water or

coolant onto its outer surface.

• Install the oil seal with a socket that matches its

outside diameter.

2. Install:

• Bearing

NOTE:

Install the bearing with a socket that matches its
outside diameter.

New

3. Install:

• Water pump seal

CAUTION:

Never apply oil or grease onto the water pump
seal surface.

NOTE:

• Install the water pump seal 1 with the mechani-

cal seal installer 4 and 40 and 50 mm bearing
driver 5.

• Before installing the water pump seal, apply

Yamaha bond No.1215 2 to the water pump
housing 3.

È Push down

Mechanical seal installer:

90890-04145, YM-04145

40 and 50 mm bearing driver:

90890-04058, YM-04058

Yamaha bond No. 1215:

90890-85505
(Three Bond No.1215

®

)

New

6-12

COOL

WATER PUMP

4. Install:

• Rubber damper holder 1 
• Rubber damper 2 

NOTE:

Before installing the rubber damper, apply tap
water or coolant onto its outer surface.

1

2

5. Measure:

• Impeller shaft tilt

Out of specification 

→ Repeat steps (4) and

(5).

CAUTION:

Make sure the rubber damper and rubber
damper holder are flush with the impeller.

1 Straightedge
2 Impeller

Max. impeller shaft tilt:

0.15 mm (0.0059 in)

1

2

INSTALLATION

1. Install:

• Water pump

NOTE:

Align the projection 

a on the impeller shaft assem-

bly with the slot in the driven gear shaft 

b.

a

b

6-13

COOL

7-1

FI

FUEL INJECTION SYSTEM

FUEL INJECTION SYSTEM

1 Battery
2 ECU (engine control 

unit)

3 Fuel injection system 

relay

4 Cylinder-#2 ignition coil
5 Spark plug
6 Fuel pump

7 Cylinder identification 

sensor

8 Cylinder-#1 ignition coil
9 Cylinder-#1 intake air 

pressure sensor

0 Throttle position sensor
A Speed sensor
B Injector #1
C Knock sensor

D Oil pressure switch
E Coolant temperature 

sensor

F Crankshaft position 

sensor

G Injector #2
H Cylinder-#2 intake air 

pressure sensor

I Intake air temperature 

sensor

J Grip/thumb warmer 

adjustment switch

K Warning light

J

K

1

2

3

6

45

5

7

8

H

9

0

A

B

G

E

F

I

C

D

FUEL INJECTION SYSTEM

7