Skycopatc
Sorry, I do not have any photos. It's easy to mark. When you have the shear bolts properly mounted and the PTO in neutral, motor off of course, you can rotate the 1st stage of the blower by hand. The outside of this shaft is hollow as you now now with a solid shaft inside. The two are joined by the shear bolts. As you rotate that 1st stage, you will notice the collar on the enclosure at the end of the shaft does not move. Simply mark or scratch an alignment mark on the collar, non moving, and the shaft.
The next time you need to replace a bolt just match the two marks and the hole inside the shaft will be properly aligned. I find a punch of the proper size, a ballpeen hammer allow you to knock out any remaining pieces of the shear bolt and keep the shaft aligned while you fumble with new bolt. Sometimes inserting a new bolt needs a little encouragement and the hammer helps here too. Make sure you top up the grease inside the shaft from time to time as you lose grease every time you shear a bolt.
Don't worry, you will learn to do it in a snap /forums/images/graemlins/grin.gif
Rick