Polaris 2009 Trail Boss 330 Service Manual page 73

5. Replace crankshaft seal.
6. Remove large sealing O-Ring from outer edge of
stator plate.
CAM CHAIN/TENSIONER
BLADE
1. Remove bolt securing tensioner blade to
crankcase (A).
A
2. Remove blade and inspect for cracks, wear, or
damage.
3. Remove cam chain. Inspect chain for worn or
missing rollers or damage. Stretch chain tight on
a flat surface and apply a 10 lb. (4.53 kg) load.
Measure length of a 20 pitch section of chain.
Replace if worn past service limit.
Measure 20
Pitch Length
Chain Service Limit:
5.407" (13.7 cm)
DRIVE SPROCKET REMOVAL
/ INSPECTION
1. Using the Slotted Nut Socket (PN 2871293),
remove the crankshaft slotted nut (A). NOTE:
The slotted nut is a left hand thread.
B
A
Remove
2. Remove cam chain drive sprocket (B) and
Woodruff key from crankshaft.
3. Inspect sprocket teeth for wear or damage.
Inspect for Areas of
Tooth Wear or Damage
4. Inspect Woodruff key for wear.
5. Replace any worn or damaged parts.
Slotted Nut Socket
(PN 2871293)
ENGINE
3.27