I have one of these and it has been great when I needed. Had a problem a couple years ago with the Tec engine that was on it so installed a HF Predator Hemi on it. Now it really sings but I sheared a bolt in the main shredder shaft. The owners manual parts manual tells me the size of the bolt but neglected to say what grade, I even wonder if it is indeed a shear bolt because the one that was in it has lasted almost 6 years now.
So if you have a tomahawk or super tomahawk what grade of bolt do you use?