1989 15hp Johnson fly wheel

[Bnecaise74]

Trying to pull my fly wheel! I have a puller but it did not come with the right size bolt. Any of you guys know off hand what size bolts I need for the puller. It looks like 3/16 to me? 1/4 looks to big?

 

[racerone]

No-------1/4-20 NC is the size from day one.