Hi yes, it is item 24, the sprocket, that I am trying to remove, tight tight tight!!!!

I had removed the whole clutch shaft and clutches from the tractor and had it on a bench so it easier to get at and soak penetrating oil downwards on it, but it is also easy to get at whilst still on the machine, except the shaft is now horizontal so penetrating oil will not soak in!

As for numbers, I realise that you guys go by these numbers to give advise, but sadly the metal rocker cover (valve cover) on the engine was somewhat rusty after being sat outdoors and the numbers are illegible in places. You can just make out the cover in the photo below. I have tried to be gently in cleaning it off so not to remove the numbers, but alas, it is heavily pitted where the numbers are.

I will write down what I can see, hopefully you can make sense of it!!

And LED bulbs sound a great idea, so will be looking in to that thanks!

I shall return with some numbers for you![Linked Image]

Simple is efficient