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Type: Posts; User: K447

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    Sometimes the start solenoid itself can be a...

    Sometimes the start solenoid itself can be a (perhaps minor) cause of reduced cranking power. Start solenoids can develop internal contact resistance as they age and are used. This affects the...
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    17.5 Amp-hour rating, Deka ETX20 equivalent ...

    17.5 Amp-hour rating, Deka ETX20 equivalent

    There are several larger capacity Powersports battery sizes you might choose....
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    What size battery do you have installed?

    What size battery do you have installed?
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    Battery resting voltage (measured when the engine...

    Battery resting voltage (measured when the engine is just sitting) matters very little. I only use it to estimate state of charge on a known good battery. *

    What matters is voltage delivered by...
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    These two voltage checks would confirm a failing...

    These two voltage checks would confirm a failing battery.
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    I am not familiar with the starter motor circuit...

    I am not familiar with the starter motor circuit on this model.

    Does the Start button directly control the start solenoid or is there some electronic control in between the physical Start button...
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    Percentage/odds wise I am with you, but this...

    Percentage/odds wise I am with you, but this seemed like a good time to illustrate some of the ‘non-obvious’ things to check in the heavy current starter motor loop.

    Voltage loses within the...
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    Millivolts is ok. Next test is starter motor...

    Millivolts is ok.

    Next test is starter motor post to starter motor case. Right at the starter motor. Not on the cable ends, not on the bolts. Right on the starter motor case and the post that...
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    Need more measurements. The starter motor...

    Need more measurements.

    The starter motor case to battery negative post test would be next.
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    The idea is to determine whether the start system...

    The idea is to determine whether the start system is continuing to be fully engaged right into and through the crankshaft stall event.

    Is the engine forcing the starter motor to stop rotating or...
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    That is what I am not clear on. Did he continue...

    That is what I am not clear on. Did he continue holding the Start button down and the engine simply ceased cranking while the Start button was still being pressed?
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    What specifically are the known symptoms of the...

    What specifically are the known symptoms of the problem?

    Have you monitored voltages at various points in the starter motor circuit while you are attempting to start the engine?
    Not just voltage...
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