Re: Johnson Flywheel with a stripped puller hole Home › Forum › Ask A Member › Johnson Flywheel with a stripped puller hole › Re: Johnson Flywheel with a stripped puller hole rudderlessReplies: 159Topics: 5 July 3, 2018 at 1:36 am #78924 A tap drill for 5/16 is 1/4 I think. A dremal or die grinder will open up that starter cup no problem. Them I’d tap the others 5/16 for balance and symmetricy once the wheel is off.