kwigbo

Ok, I got a little less timid with the tap. There was a lot of gunk in there that came out. The 1/4 20 bolts fit just fine after that. I was able to turn the puller by hand and the pulley came right out. Thanks again everyone!

1/4 28 does not work either.

Tried turning a tap in by hand it sticks at the exact same place on both holes so that makes me think it can't be dirt. What other possible sizes could it be?

Yeah, that is the set I got. I went out and bought the 1/4 20 bolts but they don't seem to thread in well (barely catch). I haven't put a wrench on them cause I don't want to strip it. Is there another possible size?

Thanks everyone for all the replies! I will go out tonight and look for the 1/4 20 bolts.

What started out as a simple water pump install has now become more complicated. In short, a water pump bolt snapped and I have to take off the front cover to get it out. I am in the process of removing the crank pulley and have the bolt off. I went out and bought a bolt puller set but it doesn't have the right size bolt in it to connect to the crank pulley. Does anyone know what size these bolts should be?