2010 Polaris Sportsman 850 Service Manual, Page 120Get this manual
ENGINE 8Remove the high tension leads from the engine and remove the (2) nuts from each exhaust flange at the engine12Disconnect the ECU from the main harnessPull down on the connector while pulling the connector tab outRemove the exhaust springs retaining the exhaust pipe to the silencer and remove the pipe from the vehicleInsert clean shop towel into the engine exhaust ports
13Disconnect the harness and ground wire from the ignition coil located on the right side of the air box
10Remove the breather line from the valve cover breatherBreather Line