Snowmobile Yamaha Phazer PZ50 (2007-2008 year). Manual - part 30

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DRIVE CHAIN

DRIVE CHAIN

Order

Job name/Part name

Q’ty

Remarks

Drive chain housing removal

Remove the parts in the order listed below.

Brake caliper/parking brake

Refer to “BRAKE”.

1

Shim

—

t = 0.5

2

Shim

—

t = 1.0

3

Brake disc

1

4

Drain bolt

1

Drain.

5

Chain tension adjusting bolt

1

Loosen.

6

Drive chain cover

1

7

Rubber seal

1

8

Chain tensioner assembly

1

9

Spacer

1

10

Drive sprocket

1

11

Driven sprocket

1

12

Drive chain

1

13

Spacer

1

For installation, reverse the removal proce-
dure.

LT

É

2

1

4

3

12

9

10

13

8

11

7

(7)

5

È

Ê

Ë

16 Nm (1.6 m 

•

 kg, 11 ft 

•

 lb)

È:   

24 Nm (2.4 m 

•

 kg, 17 ft 

•

 lb)

É:   

25 Nm (2.5 m 

•

 kg, 18 ft 

•

 lb)

Ê:   

48 Nm (4.8 m 

•

 kg, 35 ft 

•

 lb)

Ë:   

New

New

New

New

: 1 ESSO beacon 325 grease

or Aeroshell grease #7A

New

6

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DRIVE CHAIN

REMOVAL

1. Remove:

• Driven sprocket 1

NOTE:

While holding the front axle assembly with spanner
wrench 2, loosen the driven sprocket bolt.

2

1

INSPECTION

1. Inspect:

• Drive chain cover

Cracks/damage 

→ Replace.

• Oil seals (drive chain cover)

Wear/damage 

→ Replace.

• Bearings

Pitting/damage 

→ Replace.

Replacement steps:

• Remove the circlip (drive chain cover).
• Remove the bearing using a general bearing

puller.

• Install the new bearing.

NOTE:

Use a socket 1 that is the same size as the outside
diameter of the bearing race.

CAUTION:

Do not strike the inner race 2 or ball bearings
3.
Contact only the outer race 4.

• Install a new circlip (drive chain cover).

CAUTION:

Always use new circlips.

2. Inspect:

• Drive sprocket
• Driven sprocket
• Chain tensioner

Pitting/wear/damage 

→ Replace.

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DRIVE CHAIN

3. Measure:

• 14 link section 

a of the drive chain

Using a spring scale, pull on the drive chain
with 36 kg (80 lb) of force 

b.

Out of specification 

→ Replace the drive

chain.

NOTE:

• Measure the length between drive chain pin 1

and E as shown.

• Perform this measurement at two or three differ-

ent places.

If replacement is necessary, always replace the
chain and the sprockets as a set.

Maximum 14 link drive chain section 
length:

133.35 mm (5.25 in)
Limit: 137.35 mm (5.41 in)

4. Inspect:

• Drive chain

Stiffness 

→ Clean and lubricate or replace.

5. Measure:

• Brake disc thickness 

a 

Measure the brake disc thickness 1 ~ 3 mm
(0.04 ~ 0.12 in) from the edge of the brake
disc.
Out of specification 

→ Replace.

È PZ50/PZ50GT/PZ50FX
É PZ50M/PZ50VT/PZ50MP

Minimum thickness:

3.5 mm (0.14 in)

a

È

É

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DRIVE CHAIN

INSTALLATION

1. During installation, pay attention to the follow-

ing.

È Make sure that the bearing seals face towards the

drive chain as shown.

É Properly install the rubber seal onto the drive chain

housing, making sure that there are no gaps.

Be sure to install the spacers in their original
positions, otherwise the brake disc and sec-
ondary shaft will stick.

a 0.2 ~ 0.7 mm (0.008 ~ 0.028 in)

: ESSO beacon 325 grease or Aeroshell grease

#7A

For the secondary shaft and drive chain installation,
refer to “SECONDARY SHAFT”.

2. Fill:

• Drive chain housing oil

Refer to “DRIVE CHAIN” in CHAPTER 2.

3. Adjust:

• Drive chain slack

Refer to “DRIVE CHAIN” in CHAPTER 2.

a

É

È

É

C

1

C

2

C

3

C

1

C

2

C

3