Just went out to the shed and had a look at the two chains, that run on the cutter sprocket. If you hold them on edge, they look like there smiling at you. Guess that is not so good.

As for the sprocket, yes it is worn but I didnt think it was too bad. The larger sprocked on the cutter sprocket assy is visably worn from a loose chain, but the teeth I thought were still usable.

The top little sprocket I thought was quite good.

Deejay or Grumpy can you please explain for me what you are looking for to determine that a sprocket is worn.

For $55 for 2 new chains from mower shop, dont really want to destroy them. However 415 and 06B type chain is quite common, has anyone tried to source it elsewhere?

Ohh and cheers for the tip for soapy water and steel wool for the handle bars. Look a lot better after that and a polish with some Autosol. Only some minor pitting.