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1947 model 18

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Can anyone tell  me how to pipe up oil tank to engine. There are 2 connections in bottom of oil tank, the feed has a filter so which port in the crank case does this one go in to. Obviously,  the one below this is the return to oil tank, which crank case port does this go in to. The one in the back of the oil tank I assume is the air vent. I am wondering if this goes into atmosphere or back to engine. Much appreciated to anyone that can help. Mick

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Crankcase feed is upper, return is lower. The cammy engines are the other way up...just to confuse. 

I hope someone else confirms this!

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... just goes to atmosphere although I've attached a short pipe leading it to the rear chain on mine.


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