Polaris 2009 Trail Boss 330 Service Manual page 84

ENGINE
3. Apply Polaris Low Temp Grease (PN 2870577),
or engine assembly lubricant to the camshaft
main journals and cam lobes.
automatic compression release mechanism with
clean engine oil. (To install the compression
release mechanism, refer to Page 3.14).
4. Install the camshaft with the lobes facing
downward and the sprocket alignment pin facing
toward intake.
5. Disconnect the wire from the cam chain and
install the cam sprocket with the dot facing
outward.
6. Loop the cam chain over the cam sprocket,
aligning the plated link on the chain with the dot on
the sprocket.
7. Install the sprocket on the camshaft. Apply
Loctitet 242 (PN 2871949 to the cam sprocket
bolt and torque to specifications.
Cam Sprocket Bolt Torque:
25-29 ft. lbs. (34-40 Nm)
8. Check all cam timing marks to verify proper cam
timing, and install the cam chain tensioner. See
Cam Chain Tensioner Installation Page 3.41.
NOTE: The plate links will not align after engine is
rotated.
3.38
Lubricate
Plate link
aligned w/dot
Camshaft Installation - Timing Method 2
Refer to Page 3.40
1. Apply Polaris Low Temp Grease (PN 2870577),
or molybdenum disulfide grease to the camshaft
main journals and cam lobes.
automatic compression release mechanism with
clean engine oil. (To install the compression
release mechanism, refer to Page 3.18).
2. Install the camshaft with the lobes facing
downward and the sprocket alignment pin facing
toward intake.
3. Disconnect the wire from the cam chain and
rotate the engine to align the single (TDC ) timing
mark (Top Dead Center) on the flywheel with the
notch in the timing inspection window. Be sure to
use the single TDC mark when installing the cam.
Do not use the advance marks.
4. Loop the cam chain onto the cam sprocket with
the dot on the sprocket facing outward and the
alignment marks parallel with gasket surface.
5. Before positioning the sprocket on the camshaft,
check the position of the cam sprocket alignment
pin. When the cam is positioned properly, the
cam sprocket alignment pin is facing to the intake
side.
6. Install the sprocket on the camshaft.
Loctitet 242 (PN 2871949) to the cam sprocket
bolt and torque to specifications.
Cam Sprocket Bolt Torque:
25-29 ft. lbs. (34-40 Nm)
7. Check all cam timing marks to verify proper cam
timing, and install the cam chain tensioner body
with a new gasket.
8. After tensioner installation, rotate engine at least
two revolutions and re-check marks/timing.
Lubricate
Apply