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  1. ATV Performance Modifications
    2019 Polaris sportsman 570 Recently I was out riding when I got water in the oil and blew up the motor on the fourwheeler. I pulled the motor out and did a rebuild on it, put a new crank shaft, new bearings and decided to go with a 104mm big bore kit. Since I did the big bore kit I put on a big...
  2. ATV Repair and Maintenance
    There are multiple problems with the cam/valves on my 2016 570 midsize crew. First, the intake valves are stuck open. I've removed the head and the cam and you can see light through between the valves and the head. I'm not even sure physically how this can happen unless the valves seized in...
  3. ATV Repair and Maintenance
    Hello everyone, new to the forum here. Just got a 2016 Ranger 570 in the shop for a valve job. not starting. Got in there and all valves were in spec other than one of the exhaust valves which was at .017 which is the furthest out of spec ive seen on an engine this new. any idea what would cause...
  4. Polaris Scrambler
    Just purchased a 50 for my son. We had an issue that required us to take the lines off of the On, Off, Res fuel valve. Can you please help me in determining where each of the 3 hoses run from/to it? A friend put them all back on the valve, but I'm less than confident they are correct. Thanks!
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