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Denver Cumpston

Yamaha 550 Grizzly Not Starting

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Have a Yamaha 550 grizzly kids dumped gas in that had water in it stopped running, siphoned it out added new gas and dry gas in but still wont fire 

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Welcome to Quadcrazy.  The bike will start and be fine.  There is a small screw on the bottom of the bowl of the carburetor.  Take that out and let the bowl drain out. And keep it going until you have clean fuel coming out of the bowl.  Change the spark plug and she should fire after a bit of cranking.  

If its fuel injected then pull the plug and put the spark plug wire someplace safe so no sparks happen and crank the bike.  It will eventually clear. Fresh plug and you should be good to go. 

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