Polaris 340 LX 2007, Service Manual

Page: 68 / 327

3.14
MAINTENANCE
Belt Deflection Inspection
Belt deflection is critical for optimum belt performance and belt
life. It should be checked at 500 miles (800km) and then in 1000
mile (1600km) increments after that.
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.
Measuring Belt Deflection
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. See
“Adjusting Belt Deflection” on page 6.11.
= In. / mm.
Belt Deflection: 1.25" (3.2cm)