Had to replace the left side chain adjuster after a stick got caught between the chain and the rear sprocket. This was on my 75 ST90 K2.

This forced the chain to tighten up and move the rear wheel forward on the left side thus stripping all of the engaged threads from the chain adjuster. My chain came off and I put it back on but road home at two mph due to a very loose chain.

Rick

Two CT90s and Two ST90s