Thanks for that. It sounds like I’ve been quite lucky, then, because the mower has worked almost faultlessly since I bought it new in 1993, until last summer when it was a pig to start every time. So I thought I’d roll up my sleeves and return to my mis-spent youth, stripping down motorbike engines ...

I would like to perform a full engine and carburettor service on my 1993 Suffolk Punch 35s The handbook says the engine is an ATCO type A114-2N but I do not know which carburettor I have. I've attached several photos, taken today, and hope someone can identify it for me. Also, I would appreciate any...

In the end I bought Champion RJ19LM and it seems fine.

Please let me know which spark plug I need for a 1993 Suffolk Punch 35s, ATCO engine type A114-2N.

Many Thanks