Have a 2015 polaris sportsman 570. Was stalling, cutting out as you give it fuel and engine light on. Replaced fuel pump and injector. Still did not help doing the same thing.

SOURCE: Fuel pump problems

http://www.motosport.com/utility/oem-parts/POLARIS/2000/SPORTSMAN-500-_-A00CH50AL/FUEL-PUMP-_-A00CH50EB
There is an assembly diagram on the link

SOURCE: 2015 sportsman 570. On trails first time today. No problems all day but loaded on truck and reservoir bottle is empty. See no coolant on ATV or on ground. What could it be?

check all hose clamps are tight, pressure test the cooling system as there may be a hole punched in the radiator or tank
an empty reservoir indicates a fault but the radiator cap is the place to check for coolant level as the reservoir will only get empty if the system needs water on cooling down

SOURCE: My polaris sportsman 570 will not start when I put the key and I have power to the lights on the dash but the engine will not turn over. I did turn it off in gear accidently.

If engine does not turn over you need to see if the starter is getting power and if it is any good. Also look for an inline safety switch for the starter that may be stuck in the open position and not allowing the electricity to enter the starter motor.

SOURCE: I have a 2006 Polaris sportsman 700 that will not start. I have installed a new fuel pump, injectors and spark plugs.

How old is your gas?
First thing I would do is drain or siphon out as much of the old gas and start with new gas from a gas station not out of a can with >6mos old gas in it. Gas degrades over time, losing its octane and turning to varnish. Do you use Sea Foam or Sta-bil?
Stay away from E rated gasoline especially E15 or E85 if its sold where you live.

Marvin

• 85242 Answers
• Posted on Jan 25, 2017

SOURCE: I put a winch on my Polaris 2014 sportsman touring 570 and now my check engine light is on, Why!

Have the system scanned and find out what the fault code is for that was set when the light came on, that is how it is diagnosed