NormK
It's a second mower, (Mountfield Emblem 14" cut) which I quite like because it's so light and manoeuvrable.

I guess that is probably the answer right there. I do like it and I don't need it back immediately so why not take the time to do it properly!

I already bought the complete set of gaskets so there is nothing to stop me opening the crankcase and checking the piston rings (except a very stubborn bolt on the blade). I've not checked the rings on an engine yet so it would be a good thing to do to expand my education.

Its got the plastic Auto choke carburettor bolted to the fuel tank. I can't see many spares for these and its been working ok so that is one thing I will leave well alone.