Hi Corvette,

First off ,this can't be a 1964 mower .

1967 was the first 160 cc

https://www.outdoorking-forum.com.a...ette-story-with-dating-and-id-guide.html

Sounds like the o ring should be smaller to grip the fuel tickler .

I've only seen the paper gaskets on the 160.

Cheers
Max.

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