overcharge at idle
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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
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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.
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.