what did you do with your fazer today ?

[Dave48]

The "washer" is more like a flat rubber washer than an O-ring & so long as its not pinched/damaged should be fine to reuse-guess its made of a similar material to piston seals -ie brake fluid proof. Stripping/cleaning/reassembling with smear of red rubber grease will prevent future piston seizure as the position of caliper places it in the " line of fire" for all the wet & nasty stuff. Cheaper than replacing rusted/corroded pistons & damaged calipers!
Oh yes to get back to subject of thread.......... Collected my gear pedal/footpeg shaft with nice new bush fitted (£5). All side play now gone & gear change crisp & positive. Theres still one or two good "old skool" engineers in Brum! :lol