I have a 2012 Sportman 850 EX EPS Limited Addition. Bought it used, with very low mileage a couple of years ago. Since I have had it I have put in 4 new fuel pumps. It worked well for 700 km, and then it started intermittentlty losing power. After it sits for awhile it runs fine for awhile, and then the same problem starts again. I connected a pressure guage to the fuel pump and found it was losing pressure. I replaced the pump and went probably about 500 more km. and then had the same problem again. I replaced the pump and changed fuel stations to try different fuel. Same thing happened again after 5-600 more km. Replaced pump again, and the problem came back again after about 250km. I am at a loss as to what else it could be. Dealership has no idea either. Any help or suggestions would be appreciated as I don’t want to sell it in this condition and dealer will give me nothing on a trade-in. I’m fed up with driving such an unreliable quad, and at $350 a pop I can’t keep doing this!

I have a 2012 Sportman 850 EX EPS Limited Addition. Bought it used, with very low mileage a couple of years ago. Since I have had it I have put in 4 new fuel pumps. It worked well for 700 km, and then it started intermittentlty losing power. After it sits for awhile it runs fine for awhile, and then the same problem starts again. I connected a pressure guage to the fuel pump and found it was losing pressure. I replaced the pump and went probably about 500 more km. and then had the same problem again. I replaced the pump and changed fuel stations to try different fuel. Same thing happened again after 5-600 more km. Replaced pump again, and the problem came back again after about 250km. I am at a loss as to what else it could be. Dealership has no idea either. Any help or suggestions would be appreciated as I don’t want to sell it in this condition and dealer will give me nothing on a trade-in. I’m fed up with driving such an unreliable quad, and at $350 a pop I can’t keep doing this!