Any chance the holder changed thread pitch with the fastner change from JIS to ISO, so that current main jets could be used?
Don't see any supercessions in the parts book.
If not, when did the jet pitch change?
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Latest Registry Entry
1965 Honda CP77 — Ulsan Metro City, Rep. Korea
Restored with original parts — Owner: J. Doe
Main (needle) jet holder
Main (needle) jet holder
66 dream, 78 cb750k, 02fz1, 09 wing