Chosen Solution

What size deck belt does it take for a 8HP rear engine Murray mower take?

I can only suggest the obvious, did you buy it locally and do they have a chart for selling belts, its also should be on the internet, sorry. I would think there is an owners manual available online and it will have the part number friend. Do you have any more model number information please. https://www.chainanddrives.com.au/media/