Honda HR215 Squeak!!!
My mower is from 1992. Mostly used as a trim mower as we had a tractor.
In recent weeks its developed an occasional loud squeak. I thought it might be the wheels and gave them all a good shot of silicone spray, no help.
While cutting today I noticed if I didn't engage the self propelled unit there was no squeak. Engaged there is. It's not constant, just occasional, one of those things that drives you crazy.
I believe the self propelled unit is sealed.
Stihl FS 55, Stihl MS270
Off to greener pastures:
2004 John Deere LX280
1994 John Deere STX38
Ryobi 767r, Poulan 2375 "Wild Thing"