Crankcase breather

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Crankcase breather

Postby LittleRed1949 » Sat Jan 23, 2021 6:54 pm

My 49 Cub has a port plumbed in the front of the block and also in the side of the top of the air intake. Only thing I can figure is it is for a crankcase breather tube.

It seems insignificant based on the size of the fittings and what the tube diameter would be. Is it Necessary?

Nelson 634
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Re: Crankcase breather

Postby Nelson 634 » Sat Jan 23, 2021 8:26 pm


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Re: Crankcase breather

Postby Eugene » Sat Jan 23, 2021 8:55 pm

Not needed, just plug the holes.
I have an excuse. CRS.

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Re: Crankcase breather

Postby Glen » Sat Jan 23, 2021 9:00 pm

Below are pages from the Cub parts manual with info about the air cleaner, and breather tube. ... 012-30.jpg ... 012-31.jpg

Below is a pic from TM Tractor of the breather tube. :)

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