putting out 17 volts at idle battery good rectifier new anyone have any ideas

 

Stator.

 

Agree that it does sound like stator related but I'd still do a resistance check on the stator wires to the regulator and an ac test from the manual to verify.If you have one of those cheap Chinese regulators some may be bad straight out of the package.

 

Thanks for the info .the rectifier was replaced because it wouldn't keep battery charged up with accessories on could the stator be the issue with this

 

More than likely a stator problem,but being like I am,I would still do a resistance test on the yellow wires leading from the stator to the regulator. Should be some resistance between each yellow and no yellow shorting to ground.The best test is the ac voltage test listed in the manuals. It's just a way to make sure the stator is the problem and needs replacing. Don't know which model you have but here's a test on a Sportsman 800.

TEST 3: Measure AC Voltage Output of Each Stator Leg at
Charging RPM
1. Set the selector dial to measure AC Voltage.
2. Start the engine and let it idle.
3. While holding the ATV at a specified RPM, separately
measure the voltage across each “leg” of the stator by
connecting the meter leads to the wires leading from the
alternator (Y1 to Y2, Y1 to Y3, Y2 to Y3).
4. Refer to the table below for approximate Voltage AC
readings according to RPM. Test each leg at the specified
RPM in the table. Example: The alternator voltage output
reading should be approximately 18 Vac at 1300 RPM
between each 'leg'.
NOTE: If one or more of the stator leg output AC
voltage varies significantly from the specified value,
the stator may need to be replaced.

With some off the after market Chinese regulators and other parts that are crappy,this makes sure the stator is the problem.No worse feeling than to pay good bucks for a stator and still have problems. If you need a cheap 5 buck manual,your model should be listed here.Polaris ATV Service Manuals PDF Download

 

checked yellow wires first readings were 44 vac on each but once engine was warm readings were 22 vac on each.does this make any sense.thanks

 

Would help to know which model you have to see if I have the specs. May be different than the one I showed as a reference.

 

it is a 2010 sportsman 500ho

 

TEST 2: Resistance Value of Stator Leg to Ground
1. Measure the resistance value of each of the stator legs to
ground: Y1 to Ground, Y2 to Ground, Y3 to Ground. (0.43 ohms on average)
NOTE: Any measurement other than Infinity (open)
will indicate a failed or shorted stator leg.
TEST 3: Measure AC Voltage Output of Each Stator Leg at
Charging RPM
1. Set the selector dial to measure AC Voltage.
2. Start the engine and let it idle.
3. While holding the ATV at a specified RPM, separately
measure the voltage across each “leg” of the stator by
connecting the meter leads to the wires leading from the
alternator (Y1 to Y2, Y1 to Y3, Y2 to Y3).
4. Refer to the table below for approximate Voltage AC
readings according to RPM. Test each leg at the specified
RPM in the table. Example: The alternator voltage output
reading should be no less than 30-40 Vac above 2000 RPM
between each 'leg'.
NOTE: If one or more of the stator leg output AC
voltage varies significantly from the specified value,
the stator may need to be replaced.

Doesn't mention temp variations,but does sound like your stator charge coils are weak. Just trying to make sure because some of those aftermarket Chinese regulators aren't that reliable either.

 

thanks a million,will do the check and let you know what I find.