RCU Forums - View Single Post - OS 91 fourstroke problems

06-11-2015, 06:36 AM

#4

extra300crazy

Join Date: Apr 2015

Location: Clinton Twp. MI.

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Mulimike,
Having run O.S.4 strokes exclusivly, I've seen bad O rings on the needle valve cause similar problems. Hope this helps.
Karl

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