1994 115hp OMC stops dead after 20 minutes

1994deadfling

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Joined
Jul 23, 2011
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1
I have a 1994 Fling 115hp OMC that shuts down after 20 minutes regardless of how fast or slow you go. I just put a voltage regulator on it. The alarm horn works and before it shuts down I have no alarms at all. After waiting 15-20 minutes it usually fires up then stops again after 5-10 minutes. It has fuel and oil. Just no spark. Any ideas?
 
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