Hi Millzy,
The engine on this Centenary is dated 1/7 = January 1947. These engines are MkXIC's. The carb can be changed but you will need to check the spigot size as there are two sizes. You will also need to be careful with the jet sizing as well as these change for different engine sizes.
Cheers,
Sir Chook
Thanks again, the two mowers i get you know them back to front. I just need the cable, i have the bottom half so i did start it and it ran quite well, just need to hold the throttle open
