03-05-2010, 06:20 PM
While I'm no expert most air cooled engines I've seen Have a lot of "fins"(extra surface area) built in to facilitate heat loss. Also, if there is a water intake then there must be a place for the water to go(pee). If no intake then, no pee. I have a 25 hp that the muffs work great on. Thats how I do my spring "first start". Well worth the five bucks mentioned earlier.[
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