“Disappearing” Lynch Pins

[Hay Dude]

Me too. Change it for a nut & bolt.! Problem gone forever!!!

Did that on my ZD331 front casters. Pine trees always managed to pull off the loop linchpins I replaced them with bolts and nylon lock nuts
Problem solved forever.

 

[Alien]

Gotta keep a close eye on them when I am pushing brush/Lantana. It's very clever at pinching lynch pins.
The other thing of course is fairies and gnomes. I hate them.

 

[TractorGuy]

Several reviews on the finish mower I bought complained about the caster wheels coming off. I picked up 4 bolts and lock nuts when I picked up the mower.