This week the pully over the center blade of my Cub ztr pulled 2 bolts off the deck and was tilted back. Left me with about 2 hours of push mowing last saturday. I wasn't sure of the exact threads, so I installed 2 bolts that just fit through the holes with washers and nuts on the end, which snapped off in about 4 seconds. As I tried to undo one of the other 2 bolts to take one to the hardware store to buy the correct thread, it snapped off. There are 4 bolts holding the center pully/blade to the housing. Now, 2 are missing and 2 are broke off. Sooo, I drilled out the holes slightly bigger, rethreaded them, and installed new, tightly fitting bolts, and more importantly, got to the root of the problem- an unbalanced blade. I grinded off the back side of the blade until it seemed balanced (stayed still when the deck was held vertically). So far so good. This probably sounds dumb but I didn't realize an unbalanced blade would snap off bolts in 4 seconds. Lesson learned. Do you guys have a way to keep blades balanced or check them, or can you just know somethings wrong by the vibrations? Instead of grinding one side, do they make strong enough little magnets or weights to add to the light side?
No announcement yet.
Unbalanced blade= Big Problems