3.5
Maintenance
3
DRIVE / DRIVEN CLUTCHES
Belt Deflection Inspection
Too much belt deflection is when the belt is too long or the
center distance is too short. The initial starting ratio will be too
high, resulting in performance loss. This is due to the belt rising
too high in the drive clutch sheaves upon engagement (A).
Not enough belt deflection (B) is when the belt is too short or the
center distance is too long. The initial starting ratio will be too
low. In addition, the machine may creep when the engine idles,
causing damage to the internal face of the drive belt.
1. Measure the belt deflection with both clutches at rest and
in their full neutral position.
2. Place a straight edge across the tow clutches, on top the belt.
3. Apply downward pressure to the belt and measure the
distance at point (D).
4. The measurement should be 1 1/4" (3.2cm).
5. If the measurement is not correct adjust driven clutch.
Deflection Adjustment - Team Driven
1. Verify the drive system is FWD drive by rotating the
driven clutch forward.
2. While holding the set screw with an Allen wrench, loosen
the jam nut.
3. Turn the set screw clockwise while holding the jam nut
stationary to increase the distance between the clutch
sheaves (increase belt deflection).
4. Turn the set screw counter-clockwise while holding the jam
nut stationary to decrease the distance between the clutch
sheaves (decrease belt deflection).
5. Secure the jam nut while holding the set screw stationary.
6. Raise the rear of the snowmobile using a track stand to
allow the track to spin.
7. Start the engine and apply enough throttle to spin the track.
8. Turn off then engine, then re-check the belt deflection.
NOTE: Do not adjust the belt deflection to the point
where the drive belt cord line is visible when the belt
is seated in the driven clutch.
= In. / mm.
Belt Deflection: 1.25" (3.2cm)
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