If ya don't know, ya need to go to the scag site and find out what engine it has.
Then shop the various vendors. I've used Tulsa Engine Whse. before, good prices, but there are plenty of other vendors/ places. eBay?
" But let me tell you something ,folks: You can't fix stupid! There's not a pill you can take, there's not a class you can go to. Stupid is forever!"