2003 Polaris ATV Trail Boss 330 Factory Service Manual, Page 72Get this manual
ENGINE 5Replace crankshaft seal6Remove large sealing O-Ring from outer edge of stator plate
DRIVE SPROCKET REMOVALINSPECTION
1Using the Slotted Nut Socket (PN 2871293), remove the crankshaft slotted nut (A)NOTE: The slotted nut is left hand thread
CAM CHAINTENSIONER BLADE
1Remove bolt securing tensioner blade to crankcase (A)