2010 Polaris Sportsman 850 Service Manual, Page 26Get this manual

2010 Polaris Sportsman 850 Service Manual, Page 26

MAINTENANCE Valve Clearance Adjustment 12345Remove the seat and both upper side panelsDisconnect the shift linkage from the
cabCarefully disconnect the ECU by pulling the tab out while pulling down on the connectorLoosen the hose clamp retaining
the intake boot to the intake plenum and remove the bootMAGPTO ADJUSTMENT PROCEDURE 14Turn the drive clutch counter-clockwise
until the cam sprocket is in the MAG (#1) Adjustment PositionMAG (#1) Adjustment Position 10Lift up on the air box and turn
it sideways to gain access to the valve cover bolts11Remove the spark plug wires and spark plugs12Remove the (6) valve cover
bolts and valve cover Timing Pin in Vertical Position TDC #1 (MAG) Cylinder Timing Marks Lined Up With Top of Head at MAG