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A friend of mine just bought at 2000 STX 1100 3-seater. It starts up but after a few minutes dies and won't start again unless sitting about 10-15 minutes. The cycle then repeats at shorter intervals. Any ideas?
 

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The Di is prone to a big issue, but when fixed, is a great ski.
Are you getting the over heat warning ?
I'm betting the emm is getting hot. It is water cooled, and the passages get corroded and plugged. You do the cooling bypass which bypasses the stator and creates a direct feed to the emm, and ads a seconds pisser so you can monitor the water flow.
I would also do a compression test to make sure the engine is not failing. Should be 135-145.
I would also look into replacing the crank sensor, as the wires are not supported very well, and have a tendency to break at the sensor.
 

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On top of the stator cover right above the oil pump. Looks just like a std crank sensor with a 10mm head bolt holding it in. You can't miss it.
You can check it with a digital ohm meter. I forget what the spec is on it, but it's in the manual. Just wiggle the wires when testing.
 
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