Re: fuel issue or carburetor issue?

Posted by HH56 On 2017/8/21 13:57:59

Not sure about the later caps but I believe the 49 cap is the same as 47. If so there is a hole directly in the center which opens into a passage above the gasket. When the cap is fastened the pressure does compress the gasket a bit but not so far as to close off the small space between the top of the gasket and the metal outer cap. The air is drawn in under and around the edge of the cap in the space between the top of gasket and the metal top and then into the passage to exit at that hole.

If you have a swollen or extra thick gasket possibly the air would be blocked as the cap is tightened.

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