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The starter motor does not operate
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Ignition switch or master switch not activating.
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Check ignition switch and master switch circuits.
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Main circuit breakers open.
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Put main circuit breakers in the ON position.
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Batteries discharged.
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Test the batteries for charge.
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Start relay circuit breakers open.
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Put circuit breakers in the ON position.
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Starter motor wiring circuits open, grounded or shorted.
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Check electrical connections to the starter.
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Starter solenoid and start relay malfunction.
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Check the solenoids for malfunctions. Check wiring and connections for damage.
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Starter system wiring circuits open, grounded or shorted.
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Check all other wiring and connections.
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The starter motor operates but the engine will not start
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Cold weather.
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See "Cold Weather Starting" in Section 2-2.
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Lack of fuel.
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Check the fuel level. Add fuel, if necessary. See Section 3-1 for recommended diesel fuel.
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Lack of fuel flow.
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Check the fuel system.
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Restricted air intake.
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Check air intake system.
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Engine stop solenoid circuit breaker open.
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Put circuit breaker in ON position.
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Stop solenoid malfunction.
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Check the solenoid adjustment.
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