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motoag93

YZ450 Engine Question

2 posts in this topic

What is the port (hole) on the right side cylinder just below the valve cover? I saw some residue near the hole and was just curious. Thanks.

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If it's the one I'm thinking of, it is the spark plug cavity drain hole. If water, dirt, etc. get into the plug cavity (NOT the engine), that's where it'll drain out.

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