UK Karting - Notice Board (2-Stroke Karting) : Re: Rotax -wires to start push button very hot/smo

Notice Board (2-Stroke Karting)

Re: Rotax -wires to start push button very hot/smo
Posted by 'alanrr' on 20 Sep 2014 @ 01:22

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alanrrJoined: August 2001
Total Posts: 491
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The windings in the starters armature are shorting.

This is usually caused when the clutch holding tool is left in by accident and someone 'hangs' on the starter button wondering what the clicking noise is.

All the battery current is passed across the brushes into one winding, it can cause the button to melt and fail too, so look for any signs of melting around where the terminal enters the body of the button.

It can cause the starter to start on its own when the contacts touch.

It's not repairable but keep the bits as you may need a part like the case from it one day.

It's unusual for the bearing to seize so solid that it won't turn at all but I've seen a couple, unless the battery is already a bit flat.

The starter should be regularly cleaned and serviced.

Message Thread:

Rotax -wires to start push button very hot/smoking by '1509' (19 Sep 2014 @ 12:55)

Re: Rotax -wires to start push button very hot/smo by 'JohnM' (19 Sep 2014 @ 14:16)

Re: Rotax -wires to start push button very hot/smo by '1509' (19 Sep 2014 @ 14:23)

Re: Rotax -wires to start push button very hot/smo by 'alanrr' << You are here!

Re: Rotax -wires to start push button very hot/smo by '1509' (22 Sep 2014 @ 8:45)

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