Snowmobile Yamaha Phazer PZ50W, PZ50GTW, PZ50FXW, PZ50MW, PZ50VTW, PZ50MPW. Manual - part 54

5-53

ENG

BALANCER

Order

Job name/Part name

Q’ty

Remarks

11

Circlip

1

12

Bearing

1

13

Circlip

1

14

Bearing

1

15

Bearing retainer

1

16

Bearing

1

17

Bearing

1

18

Circlip

1

19

Bearing

1

For installation, reverse the removal proce-
dure.

4

5

8

16

7

6

15

4

13

14

2

1

(2)

(4)

(10)

3

17

18

19

10

9

11

12

É

É

Ê

Ë

È

Ê

New

LT

LT

12 Nm (1.2 m 

•

 kg, 8.7 ft 

•

 lb)

10 Nm (1.0 m 

•

 kg, 7.2 ft 

•

 lb)

75 Nm (7.5 m 

•

 kg, 54 ft 

•

 lb)

50 Nm (5.0 m 

•

 kg, 36 ft 

•

 lb)

È:   
É:   
Ê:   
Ë:   

New

New

New

New

5-54

ENG

BALANCER

REMOVAL

1. Straighten the lock washer tab.
2. Loosen:

• Right balancer weight nut 1 

CAUTION:

The right balancer weight nut has left-handed
threads. To loosen the nut, turn it clockwise.

NOTE:

Place an aluminum plate 2 between the teeth of
the balancer shaft drive gear 3 and balancer shaft
driven gear 4.

1

3

4

2

3. Straighten the lock washer tabs.
4. Loosen:

• Balancer shaft drive gear bolt 1 
• Balancer shaft driven gear nut 2 

CAUTION:

The balancer shaft drive gear bolt and balancer
shaft driven gear nut has left-handed threads.
To loosen the bolt and nut, turn it clockwise.

NOTE:

Place an aluminum plate 3 or 4 between the teeth
of the balancer shaft drive gear 5 and balancer
shaft driven gear 6.

5

6

3

4

1

2

5-55

ENG

BALANCER

INSPECTION

1. Inspect:

• Bearings

Clean and lubricate the bearings, then rotate
the inner race with your finger.
Rough movement 

→ Replace.

2. Inspect:

• Balancer shaft drive gear
• Balancer shaft driven gear

Damage/wear 

→ Replace.

3. Inspect:

• Balancer weight

Cracks/damage/wear 

→ Replace.

4. Inspect:

• Balancer shaft

Scratches (excessive)/damage 

→ Replace.

• Splines 1 

Wear/damage 

→ Replace the secondary

shaft.

• Bearing contact surface 2 

Scratches/wear/damage 

→ Replace the sec-

ondary shaft.

5. Inspect:

• Primary sheave drive shaft assembly

Damage 

→ Replace.

2

1

1

INSTALLATION

1. Install:

• Balancer shaft drive gear
• Lock washer
• Balancer shaft drive gear bolt

NOTE:

Align the shallow groove 

a in the balancer shaft

drive gear with the low spline 

b of the crankshaft.

2. Install:

• Left balancer weight 1 

NOTE:

Align the punch mark 

a on the left balancer weight

with the shorter spline 

b on the balancer shaft end.

b

a

b

1

a

5-56

ENG

BALANCER

3. Install:

• Balancer shaft driven gear 1 
• Lock washers
• Balancer shaft driven gear nut
• Right balancer weight nut
• Balancer shaft drive gear bolt

NOTE:

• Align the punch mark 

a on the balancer shaft

driven gear with the shorter spline 

b on the bal-

ancer shaft end.

• Align the punch mark 

c on the balancer shaft

driven gear with the punch mark 

d on the bal-

ancer shaft drive gear.

4. Tighten:

• Balancer shaft driven gear nut
• Right balancer weight nut
• Balancer shaft drive gear bolt

CAUTION:

The right balancer weight nut, balancer shaft
driven gear nut, and balancer shaft drive gear
bolt has left-handed threads. Turn the retainer
counterclockwise to tighten it.

NOTE:

Place an aluminum plate 1 or 2 between the teeth
of the balancer shaft drive gear 3 and balancer
shaft driven gear 4.

T

 

R

.

.

Right balancer weight nut:

50 Nm (5.0 m · kg, 36 ft · lb)

Balancer shaft driven gear nut:

50 Nm (5.0 m · kg, 36 ft · lb)

Balancer shaft drive gear bolt:

75 Nm (7.5 m · kg, 54 ft · lb)

b

a

c

d

1

1

2

3

4