Polaris Sportsman 850 Service Manual page 150

ENGINE / COOLING SYSTEM
2. Remove CPS from MAG cover. Rotate crank until
the appropriate timing mark is visible in the center of
the CPS hole.
• NON-Electronic Throttle machines will have an "I"
mark on the flywheel that indicates TDC.
• Machines WITH Electronic Throttle will have an "V"
mark on the flywheel that indicates TDC.
3. Pull cam chain upward, making sure it is engaged
with the drive sprocket on the crankshaft.
4. Place the sprocket (with marks facing out) on the
chain and engage all teeth.
5. Align two sprocket marks with valve cover gasket
surface.
6. Slide sprocket onto camshaft, aligning slot in
sprocket with pin.
3.78
NOTE
7. Screw in the sprocket bolt
bolt must be fully tightened after cam chain tensioner
is installed.
8. Verify flywheel TDC mark is still aligned (be sure the
crankshaft has not rotated from TDC) and that
sprocket marks are aligned with gasket surface (note
that cam chain tensioner installation may change the
alignment slightly).
9. If marks are not aligned, remove sprocket bolt and
correct alignment.
10. Proceed to Cam Chain Tensioner Installation (
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finger tight. Sprocket