I've googled and not found anything free to use info wise but can anyone tell me the size of the belt and provide me with instructions of how to get in to change it?

Sega, as with any box you have now or in the future, there is no point trying to get schematics or service manuals to change belts, it simply would be come too expensive as most of them you would have to purchase.

What I would advise is to open it up and learn. Take photographs before during and after, lay out screws in the positions they came out of the box and just take your time. Changing out belts is pretty standard fare for us collectors but dont be discouraged. As long as you are patient and take your time and snap some photos you will be fine.

Get a stock of belts from CPC of all kinds of different sizes. This way, when you're in a position to replace them with the deck open you can just get your belts out and see which fits. I say to do this because sometimes the belt size information is just not available and the belts inside have perished. Put one or two screws back in the deck and power it up and test. It really is as simple as that and there is no science to it.

I cant really warrent buying loads of belts as I cant store or afford a collection of boxes, the crown may be the last one I buy, I really need to avoid unessacary costs.

im with docs on this one....belts from CPC are pence so stock up pal

Boombox Crown CSC-950F CSC 950F 950