Re: Johnson OA-55 flywheel puller bolts 1/4 – 24?

[Mumbles]

Your motor was built in a time before thread sizes became standardised and manufacturers could use whatever thread they wanted. Those threads aren’t 1/4-24 but close. They should be 14-24, which is just a few thou under 1/4".

Here’s a link to a previous thread on these threads:

viewtopic.php?f=2&t=14362&p=75091&hilit=14+24+threads#p75091