The other rear wheel fell off
the walk behind mower today.
Luckily I still had the
washers that are needed to fix this problem.
I had a feeling this would
happen when I replaced the first
rear wheel earlier this year with a new and improved version that came with its own metal
bearing. I guess all those extra vibrations went directly to the weak
wheel?
A good example is Loctite Red 271.
Clean the axle thread and the inside of the nut with e.g. acetone. Then apply some loctite on the thread and screw the nut on. Let it cure for ten minutes before use.