Friend of mine hit his gas meter and knocked it out of service. No fire, but it sheared the coupling on one of the lines. I had to go and buy the fittings and repair the meter so he would have gas. Luckily no fire or other damage. Well, that was not enough for him. The other day he hit his water meter with the blades. Needless to say the Cub Cadet zero turn stopped immediately, motor stopped instantly. This is a belt drive hydro mower. After some initial troubleshooting, I determined that at least one rod was broken. I popped the motor off, and it looked like something exploded inside. Both rods broke, one of the wrist pins was laying in the block. Part of one rod was still attached to one of the pistons, but I could see into the other cylinder, but since the wrist pin was out, I'm a guessin the piston shattered, We didn't pull the heads to see the cylinder damage as what's the use, this thing is trashed. I didn't disassemble anything, what you see is what was laying inside the block, after I removed the pan. The crank journals were ruined. On a high note, the cam and lifters looked perfect! This is a 23.5HP Kohler Command vertical V twin, they just don't make 'em like they used to. Moral of the story, don't hit your gas meter, cause then you'll hit your water meter and if it didn't stop the mower, the only thing left is the electric meter.