Valve Clearance Adjustment - Polaris 2009 Sportsman XP 850 Service Manual

MAINTENANCE

Valve Clearance Adjustment

1. Remove the seat and both upper side panels.
2. Disconnect the shift linkage from the shift lever.
3. Remove the (2) screws retaining the lower portion of the
air box.
4. Remove the hose from the breaker valve located on top of
the valve cover.
5. Remove the push rivets retaining the right-hand portion of
the rear cab to gain access to the bolts retaining the upper
right-hand frame support.
6. Remove the (4) bolts retaining the frame support. Pull the
support forward and down to remove it from the vehicle.
7. Remove the (2) Torx-head screws retaining the upper
portion of the air box to the front cab.
8. Carefully disconnect the ECU by pulling the tab out while
pulling down on the connector.
9. Loosen the hose clamp retaining the intake boot to the
intake plenum and remove the boot.
10. Lift up on the air box and turn it sideways to gain access to
the valve cover bolts.
11. Remove the spark plug wires and spark plugs.
12. Remove the (6) valve cover bolts and valve cover.
13. Remove PVT cover so the engine can be rotated (see "Drive
Belt Removal" procedure within this chapter).
2.14
MAG & PTO ADJUSTMENT PROCEDURE
14. Turn the drive clutch counter-clockwise until the cam
sprocket is in the MAG (#1) Adjustment Position.
MAG (#1)
Adjustment Position
Timing Marks Lined Up With Top of Head
15. Set the MAG cylinder valve lash by placing the feeler gauge
blade between the lash adjuster and valve as shown.
Timing Pin in Vertical Position
TDC #1 (MAG) Cylinder
at MAG (#1) Adjustment Position
MAG (#1)