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Snowmobile Yamaha FX10X, FX10RTX, FX10RTRX, FX10RTRAX, FX10MTX, FX10MTRX, FX10MTRAX. Manual - part 29

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POWR

PRIMARY SHEAVE AND DRIVE V-BELT

2. Inspect:

• Primary sheave spring 1

Cracks/damage

→ Replace.

3. Measure:

• Primary sheave spring (standard) free length

a
Out of specification

→ Replace the primary

sheave spring.

NOTE:

When changing the primary sheave springs, refer
to “GEAR SELECTION” in CHAPTER 2.

4. Inspect:

• Primary sheave cap bush 1
• Sliding sheave bush 2

Cracks/damage

→ Replace.

Primary sheave spring (standard)
free length:

FX10/FX10RT/FX10RTR/FX10RTRA

87.4 mm (3.44 in)

FX10MT “USA/Canada”/FX10MTR
“USA/Canada”

89.8 mm (3.54 in)

FX10MTR “Europe”/FX10MTRA
“Europe”

98.4 mm (3.87 in)

Clutch bushing press:

90890-01529, YS-42424

5. Inspect:

• Weight 1
• Roller 2
• Bushing 3
• Slider 4
• Rivet 5
• O-ring 6
• Collar

Wear/scratches/damage

→ Replace.

Slider inside clearance

Min. 0 mm (0 in)
Max. 0.3 mm (0.0118 in)

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PRIMARY SHEAVE AND DRIVE V-BELT

Rivet replacement steps:

• Remove old rivet with the appropriate drill.
• Insert the rivet 1 from the ID mark 2 side.
• Press or peen the rivet head so that the diame-

ter

a of the rivet head measures 8.2 mm

(0.32 in) or larger.

6. Measure:

• Bushing inside diameter

Out of specification

→ Replace as a set.

NOTE:

When replacing the weight and roller bushings, use
the YXR clutch bushing jig kit.

Ê Removing
Ë Installing

Bushing inside diameter:

Roller

È:

New: 9.077 mm (0.357 in)
Wear limit: 9.3 mm (0.366 in)

Weight

É:

New: 8.077 mm (0.318 in)
Wear limit: 8.3 mm (0.327 in)

YXR clutch bushing jig kit:

90890-01528, YS-39752

ASSEMBLY

1. Install:

• Sliding sheave

(onto the spider)

NOTE:

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

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POWR

PRIMARY SHEAVE AND DRIVE V-BELT

2. Install:

• Fixed sheave

(onto the spider)

NOTE:

• Clean the threads.
• Apply LOCTITE

#648 to the fixed sheave as

shown.

CAUTION:

LOCTITE

should be applied only to the speci-

fied area. Never apply it to the bushings and
other areas.

a 16 mm (0.63 in)
b 30 mm (1.18 in)

3. Install:

• Fixed sheave stoppers 1

NOTE:

Stopper tapered portion should face fixed sheave.

4. Tighten:

• Spider

Tightening steps:

• Finger-tighten the spider until it is stopped by

the fixed sheave stopper.

• Hold the fixed sheave with the clutch spider

separator 1.

NOTE:

Securely fit the projections on the clutch separator
adapter 2 into the fixed sheave holes.

Clutch spider separator:

90890-01711, YS-28890-C

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PRIMARY SHEAVE AND DRIVE V-BELT

• Tighten the spider to specification using the bar

wrench 3.

CAUTION:

The spider has a left-handed thread.

WARNING

• Do not operate the primary sheave until the

LOCTITE

has dried completely. Wait 24

hours before operating the primary sheave.

• Since a high torque is required to tighten the

spider, make sure the spider, fixed sheave,
and special tool are well secured. Tighten the
spider carefully to prevent cracks and dam-
age to the sheaves and spider.

Clutch spider separator (bar
wrench):

90890-01711, YS-28890-C

Spider:

200 Nm (20.0 m · kg, 145 ft · lb)

5. Install:

• Weight
• Bolts 1
• Nuts 2
• Set bolts

NOTE:

To maintain the primary sheave balance, the bolts
1 must be installed with their threaded portions
pointing in a counterclockwise direction, as illus-
trated.

Nut:

6 Nm (0.6 m · kg, 4.3 ft · lb)

Set bolt:

4 Nm (0.4 m · kg, 2.9 ft · lb)
LOCTITE

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