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Message: <blockquote data-quote="MrGiggles" data-source="post: 523018" data-attributes="member: 22613">If you've got those mud dauber wasps in Arizona, they will plug up any orifice they can fit in. Four stroke outboards often have a bigger outlet nozzle that's perfect for them.I usually had to fish out the nozzle on my 90hp 4S two or three times every summer. A piece of .090 weed whacker string works pretty well. When I had that motor disassembled shortly after purchasing it, they managed to plug the hoses in the water cooled fuel sending module, managed to get through about 18" of hose to get at it. Determined little buggers.</blockquote>