2007 Polaris Two Stroke Snowmobile Workshop Repair manual, Page 160Get this manual
CLUTCHING DRIVE CLUTCH
Identification
Every clutch will have the last three digits of the clutch part number etched on to the cover (A)The "X" (B) marking is an index mark where the clutch cover (C), clutch spider (D) and the stationary sheave (E) should line up when the clutch is assembled