2003 Polaris Scrambler 50-90 Sportsman 90 Predator 90 Service Manual, Page 94Get this manual
ELECTRICAL Connect the meter leads to the YellowRed and Black wires leading from the alternatorStart the engine using the kick staRter and let it idleReading should be minimum of 3A at idleCAUTION: This test simulates "full load" on the alternatorDo not perform this test longer than required to obtain reading or the alternator stator windings may overheat3-5 seconds is acceptableDo not rev the engine during the testAlternator Current Output: Minimum of AC Amps Faulty starter button Faulty ignition switch (Do other systems function?) Faulty starter solenoid or starter motorEngine problemseized or binding (Can engine be rotated with kick starter?) Starter Motor Turns Over Slowly Battery discharged Excessive circuit resistancepoor connections (see Voltage Drop Test below) Engine problemseized or binding (Can engine be rotated easily with kick starter?) Faulty or worn brushes in starter motor Starter Motor TurnsEngine Does Not Rotate Faulty starter drive Faulty starter drive gear or starter motor gear Faulty flywheel gear or loose components