The voltage regulator is a 3"x3" box bolted to frame usually with 2 screws .. it should have a connector with 3 or 4 wires .. sometimes just removing and cleaning mounting surfaces will solve charging problems. ! Checkat battery with voltmeter ,, then start engine , voltage with engine running should be 13 + volts dc.
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.
SOURCE: Is there any other oil to use in 2010 polaris sportsman 850 or only the high dollar polaris oil?
Yes you can use 10/40w or 20/50w with out any problems. The manufactures will tell you only to use what they suggest. But other oils will work fine. Don't waste your money on their suggested over priced oils.
SOURCE: Can I charge battery while still hooked up? 2010 polaris sportsman 850 tour eps
positive to positive , negative to negative should be no problem
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