2005 Polaris Sportsman 400/500 Service Manual, Page 280Get this manual
ELECTRICAL Current Draw Inspection Key Off 8With the engine running, turn the lights on and engage parking brake lock to keep brake light on9Repeat test, observing ammeter and tachometerWith lights on, charging should occur at or below 2000 RPM
+ Battery
ALTERNATOR OUTPUT TEST (AC AMP)
Three tests can be performed using multimeter to determine the condition of the stator (alternator)