Snowmobile Yamaha Phazer PZ50W, PZ50GTW, PZ50FXW, PZ50MW, PZ50VTW, PZ50MPW. Manual - part 60

5-77

ENG

CRANKCASE

13. Apply:

• Sealant

(onto the crankcase mating surfaces)

NOTE:

Do not allow any sealant to come into contact with
the oil gallery or crankshaft journal bearings. Do not
apply sealant to within 2 ~ 3 mm (0.08 ~ 0.12 in) of
the crankshaft journal bearings.

14. Install:

• Dowel pins

Yamaha bond No. 1215:

90890-85505
(Three Bond No.1215

®

)

15. Install:

• Crankshaft journal bearings 1 

(into the lower crankcase)

NOTE:

• Align the projections 

a on the crankshaft journal

lower bearings with the notches 

b in the crank-

case.

• Install each crankshaft journal lower bearing in its

original place.

16. Install:

• Lower crankcase

(onto the upper crankcase)

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ENG

CRANKCASE

17. Install:

• Crankcase bolts

NOTE:

• Lubricate the bolt threads with engine oil.
• Tighten the bolts in the order of the embossed

numbers on the crankcase.

È Cylinder head side
É Oil pan side

M9 

× 105 mm bolts: 1 

M6 

× 70 mm bolts: 2 

M6 

× 65 mm bolts: 3 

M6 

× 50 mm bolts: 4 

M6 

× 50 mm bolt: 5 (with LOCTITE

®

)

M6 

× 35 mm bolts: 6 

NOTE:

Lubricate the crankcase bolt threads with engine
oil.

T

 

R

.

.

Crankcase bolt:

Bolt 1:

1st: 15 Nm (1.5 m · kg, 11 ft · lb)
2nd: 15 Nm (1.5 m · kg, 11 ft · lb)
Final: Specified angle 65° ~ 70°

Bolt 2 ~ 6:

12 Nm (1.2 m · kg, 8.7 ft · lb)

2

2

2

È

5 3

6

6 4

5

5

5

1

1

1

1

1

1

6

6

3

6

4

É

6-1

COOL

COOLING SYSTEM

RADIATOR AND HEAT EXCHANGER

Order

Job name/Part name

Q’ty

Remarks

Radiator and heat exchanger removal

Remove the parts in the order listed below.

Coolant

Drain.

Refer to “COOLING SYSTEM” in CHAPTER 
2.

Engine assembly

Refer to “ENGINE ASSEMBLY” in CHAPTER 
5.

1

Coolant reservoir

1

2

Radiator fan motor coupler

1

Disconnect.
PZ50M/PZ50VT/PZ50MP

3

Plastic band

3

4

Radiator inlet hose

1

5

Radiator outlet hose 1

1

6

Radiator assembly

1

7

Radiator fan motor

1

PZ50M/PZ50VT/PZ50MP

8

Oil cooler outlet hose

1

9

Oil cooler inlet hose

1

10

Oil cooler 

1

New

New

LT

1

(2)

22

24

25

26

15

6

(3)

8

10

13

(3)

4

19

20

24

23

21

9

11

18

14

16

5

3

17

2

7

3

8 Nm (0.8 m 

•

 kg, 5.8 ft 

•

 lb)

È:   

27 Nm (2.7 m 

•

 kg, 19 ft 

•

 lb)

Ê:   

10 Nm (1.0 m 

•

 kg, 7.2 ft 

•

 lb)

É:   

É

È

12

É

LS

É

Ê

É

(4)

RADIATOR AND HEAT EXCHANGER

6-2

COOL

RADIATOR AND HEAT EXCHANGER

Order

Job name/Part name

Q’ty

Remarks

11

Water pump outlet hose

1

12

Sub-wire harness

1

13

Knock sensor

1

14

Water jacket joint

1

15

Throttle body outlet hose

1

16

Water pump inlet hose

1

17

Water pump assembly

1

18

Engine outlet hose

1

19

Coolant reservoir inlet hose

1

20

Coolant temperature connector

1

Disconnect.

21

Thermostat assembly

1

22

Coolant reservoir inlet hose

1

23

Radiator outlet pipe 1

1

24

Radiator outlet hose 2

1

25

Radiator outlet pipe 2

1

26

Radiator outlet hose 3

1

27

Heat exchanger

1

For installation, reverse the removal proce-
dure.

New

New

LT

1

(2)

22

24

25

26

15

6

(3)

8

10

13

(3)

4

19

20

24

23

21

9

11

18

14

16

5

3

17

2

7

3

8 Nm (0.8 m 

•

 kg, 5.8 ft 

•

 lb)

È:   

27 Nm (2.7 m 

•

 kg, 19 ft 

•

 lb)

Ê:   

10 Nm (1.0 m 

•

 kg, 7.2 ft 

•

 lb)

É:   

É

È

12

É

LS

É

Ê

É

(4)

6