We recently bought a Husqvarna M ZT-52 zero-turn lawn mower.
It's been working wonderfully, except yesterday, the center blade and retaining bolt
fell shot off while I was mowing.
We flipped the deck, and removed the two remaining blades and bolts, and reattached them all, torquing to what was listed in the manual (55 Ft-lbs). Thinking all was well, I started mowing again today, and the left-hand blade shot off after about six hundred feet.
Now I'm not opposed to getting my hands dirty, but this is a new machine (13 engine hours clocked), and having to halt everything to reattach these stupid blades is getting old pretty quickly.
What can I do to keep these dang blades and retaining bolts under the cutting deck where they belong?