Polaris 600 INDY VOYAGEUR Owner's Manual page 52

THE PERFECT FIT
Suspension Adjustments
Torsion Spring Preload
To adjust rear torsion spring preload, rotate the three-position cam using
the engine spark plug tool. Different rate torsion springs are available if
a firmer ride is desired. Contact your dealer for more information.
The following information is provided only as a guideline to be used for
initial suspension set-up. Your set-up may vary based on your desired
riding style.
Soft (long end of cam to front)
Medium (short end of cam up)
Firm (long end of cam up)
Soft Medium
Firm
50