Valve Clearance - Polaris 2009 Trail Boss 330 Service Manual

MAINTENANCE
Using an oil filter
counterclockwise to remove.
Filter
9. Using a clean dry cloth, clean filter sealing surface
on crankcase.
10. Lubricate O-ring on new filter with a film of engine
oil. Check to make sure the O-ring is in good
condition.
11. Install new filter and turn by hand until filter gasket
contacts the sealing surface, then turn and
additional 1/2 turn.
NOTE: The sealing surfaces on the drain plug and
crankcase should be clean and free of burrs, nicks or
scratches.
12. Remove dipstick and fill tank with 2 quarts (1.9 l)
of Polaris Premium 4 Synthetic Oil (PN 2871281).
13. Place gear selector in neutral and set parking
brake.
14. Start the engine and let it idle for one to two
minutes. Stop the engine and inspect for leaks.
15. Re-check the oil level on the dipstick and add oil
as necessary to bring the level to the upper mark
on the dipstick.
16. Dispose of used filter and oil properly.
Crankcase Drain Plug Torque:
14 ft. lbs. (19 Nm)
Oil Filter Torque:
Turn by hand until filter gasket
contacts sealing surface, then
turn an additional 1/2 turn
Oil Filter Wrench:
(PV- -43527)
2.24
wrench, turn filter

VALVE CLEARANCE

Inspect and adjust valve clearance while the engine
is cold and the piston positioned at Top Dead Center
(TDC) on compression stroke.
1. Remove the seat.
2. Remove body panels and fuel tank as necessary
to gain access to valve cover.
3. Remove the spark plug high tension lead and
remove the spark plug. CAUTION: Place a clean
shop towel into the spark plug cavity to prevent
dirt from entering.
4. Remove plastic valve plugs.
5. Remove timing inspection plug from recoil
housing.
CAUTION: Failure to position the crankshaft at TDC
on compression stroke will result in improper valve
adjustment.
6. Rotate engine slowly with recoil rope, watching
the intake valve(s) open and close.
NOTE: Observe the intake valve closing and then
start to open, continue to rotate until the "T" aligns with
pointer. The camshaft lobes should be pointing
downward.
7. Verify accurate TDC positioning by observing the
"T" mark aligned with the pointer in the timing
inspection hole. In this position there should be
clearance on all valves.
INTAKE VALVE CLEARANCE:
0.006±0.0008I (0.15±0.02 mm)
BTDC on compression
330 Valve Plugs