Polaris 340 Classic Owner's Manual page 47

WideTrak Rear Suspension Adjustments
Rear Spring Settings
Rear spring adjustment is primarily a control for riding comfort. To
check for the recommended settings:
1. Lift the rear of the machine to relieve the rear springs.
2. Slowly lower the machine and measure the distance between the
ground and the running board.
3. Without letting the suspension settle, the rider should carefully
mount the snowmobile.
4. Measure the distance between the ground and the same spot on the
running board.
The difference between the two readings should be approximately 1
1/2" (3.8 cm). If the difference is greater than 1 1/2", the rear spring
should be adjusted equally on both sides until the desired 1 1/2" drop is
obtained.
Compensating adjustments for heavy or light drivers or cargo loads can
be made by adjusting the rear spring eye bolt (A) length. Adjust spring
tension so there is equal tension on the long leg of each spring.
A
NOTE: Rear spring settings will affect ski-to-ground pressure. If ski
pressure is too light it may be desirable to tighten the rear springs for
an increase in ski-to-ground pressure.
THE PERFECT FIT
45