Proper engine breakin is done inĀ  60 seconds flat if the engine was properly assembled .

I never thought to look on Amazon for sprockets for my '68 CL90 so I wound up paying $35 for a nice vintage Japanese made oneand it's now on and properl;y aligned , unlike the opld 54 T one I took off , it was a degree or so off so the teeth were not only worn out , they were worn off on one side from the old chain rubbing.....

Sheesh ~ this Moto was supposedly bought from a Motocycle Mechanic , more likely a tosser flipper .