Starter System Troubleshooting; Voltage Drop Test - Polaris Sportsman 400 Service Manual

ELECTRICAL

STARTER SYSTEM TROUBLESHOOTING

Starter Motor Does Not Turn
SBattery discharged - low specific gravity
SLoose or faulty battery cables or corroded connections (see Voltage Drop Tests)
SRelated wiring loose, disconnected, or corroded
SPoor ground connections at battery cable, starter motor or starter solenoid (see Voltage Drop
Tests)
SFaulty starter button
SFaulty ignition switch (Do other systems function?)
SFaulty starter solenoid or starter motor.
SEngine problem - seized or binding (Can engine be rotated easily with recoil starter?)
Starter Motor Turns Over Slowly
SBattery discharged - low specific gravity
SExcessive circuit resistance - poor connections (see Voltage Drop Test below)
SEngine problem - seized or binding (Can engine be rotated easily with recoil starter?)
SFaulty or worn brushes in starter motor
SAutomatic compression release inoperative
Starter Motor Turns - Engine Does Not Rotate
SFaulty starter drive
SFaulty starter drive gears or starter motor gear
SFaulty flywheel gear or loose flywheel

VOLTAGE DROP TEST

The Voltage Drop Test is used to test for bad connections. When performing the test, you are testing the amount
of voltage drop through the connection. A poor or corroded connection will appear as a high voltage reading.
Voltage shown on the meter when testing connections should not exceed .1 VDC per connection or component.
To perform the test, place the meter on DC volts and place the meter leads across the connection to be
tested. Refer to the chart on next page to perform voltage drop tests on the starter system.
Voltage should not exceed:
.1 DC volts per connection
10.18
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