2003 Polaris 3 PRO X Factory Service Manual, Page 170Get this manual
CLUTCHING Adjusting Belt Deflection
Belt deflection can be adjusted without removing the clutch from the jackshaft1Pull belt into driven clutch to slightly open sheaves
2Loosen three bolts on adjustment cam
3Turn cam counterclockwise to reduce distance between sheavesDo not rotate past #1 position
4Torque bolts to specification