Ground bolt on starter size help

[Shallowman]

Ordered a replacement starter for my 60hp Mariner . It didn't come with a ground wire bolt , but the bolt on my old one is to big . Iam thinking on the old one someone may have made it bigger . I looked at some diagrams and it doesn't list a diameter / thread . I thought it would be the same size as the stud for the positive but its not . Does anyone know the size i need ?

 

[Shallowman]

Re: Ground bolt on starter size help

All good . I decided to just switch the top off the old starter . So maybe now its all not new but it cranks by key and that beats using the pull cord on a 60 hp .