Polaris Sportsman 400, Service Manual

Page: 352 / 381

ELECTRICAL
10.18
STARTER SYSTEM TROUBLESHOOTING
Starter Motor Does Not Turn
S
Battery discharged - low specific gravity
S Loose or faulty battery cables or corroded connections (see Voltage Drop Tests)
S
Related wiring loose, disconnected, or corroded
S Poor ground connections at battery cable, starter motor or starter solenoid (see Voltage Drop
Tests)
S Faulty starter button
S Faulty ignition switch (Do other systems function?)
S
Faulty starter solenoid or starter motor.
S Engine problem - seized or binding (Can engine be rotated easily with recoil starter?)
Starter Motor Turns Over Slowly
S
Battery discharged - low specific gravity
S Excessive circuit resistance - poor connections (see Voltage Drop Test below)
S Engine problem - seized or binding (Can engine be rotated easily with recoil starter?)
S Faulty or worn brushes in starter motor
S
Automatic compression release inoperative
Starter Motor Turns - Engine Does Not Rotate
S
Faulty starter drive
S Faulty starter drive gears or starter motor gear
S Faulty 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