Snowmobile Yamaha FX10X, FX10RTX, FX10RTRX, FX10RTRAX, FX10MTX, FX10MTRX, FX10MTRAX. Manual - part 30

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6. Install:

• Primary sheave spring 1 
• Primary sheave cap 2 

NOTE:

Be sure the sheave cap match mark (X) is aligned
with the spider match mark (X).

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Primary sheave cap bolt:

14 Nm (1.4 m · kg, 10 ft · lb)

INSTALLATION

1. Install:

• Primary sheave assembly

CAUTION:

Be sure to remove any oil or grease from the
tapered portion of the crankshaft and spider
using a cloth dampened with thinner.

2. Apply:

• Engine oil (to threads of primary sheave bolt)

3. Tighten:

• Primary sheave bolt 1 

Tightening steps:

• Hold the primary sheave 2 using the sheave

holder 3 and tighten the primary sheave bolt to
specification.

Sheave holder:

90890-01701

Primary clutch holder:

YS-01880-A

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Primary sheave bolt:

1st:

120 Nm (12.0 m · kg, 85 ft · lb)

2

3

1

PRIMARY SHEAVE AND DRIVE V-BELT

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PRIMARY SHEAVE AND DRIVE V-BELT

• Loosen the primary sheave bolt completely.
• Retighten the primary sheave bolt to specifica-

tion.

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Primary sheave bolt:

2nd:

60 Nm (6.0 m · kg, 43 ft · lb)

4. Adjust:

• V-belt position

Refer to “DRIVE V-BELT” in CHAPTER 2.

• Sheave offset
• Secondary sheave free play (clearance)

Refer to “SHEAVE OFFSET ADJUSTMENT”
in CHAPTER 2.

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SECONDARY SHEAVE

SECONDARY SHEAVE

Order

Job name/Part name

Q’ty

Remarks

Secondary sheave removal

Remove the parts in the order listed below.

NOTE:

Apply the brake to lock the secondary
sheave.

Left side cover/Drive guard

Refer to “COVERS” in CHAPTER 3.

V-belt

Refer to “PRIMARY SHEAVE AND DRIVE V-
BELT”.

1

Washer

1

2

Shim (left)

—

Refer to “SHEAVE OFFSET ADJUSTMENT” 
in CHAPTER 2.

3

Collar

1

4

Secondary sheave assembly

1

5

Shim (right)

—

Refer to “SHEAVE OFFSET ADJUSTMENT” 
in CHAPTER 2.

6

Washer

1

For installation, reverse the removal proce-
dure.

64 Nm (6.4 m 

•

 kg, 46 ft 

•

 lb)

È:   

1

2

3

4

È

5

6

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SECONDARY SHEAVE

Order

Job name/Part name

Q’ty

Remarks

Secondary sheave disassembly

Remove the parts in the order listed below.

1 Spring 

seat

1

2 Secondary 

sheave 

spring

1

3 Fixed 

sheave

1

4 Stopper

1

5 Sliding 

sheave

1

For assembly, reverse the disassembly pro-
cedure.