Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
4008 does not show as good number, do you have a longer renumber/ Murray makes so many different models and the older ones are hard to locate information.
21981X12- OEM #37X49- 4HP B&S Drive Belt- (3/8"x 40-1/2"), this is only listing I can find that shows any part of the model. Take tape measure, and run around the outside of the old belt, or on the pulleys ,if you have no belt and read the outside dimension. Is it close to the 3/8 X 40 1/2 belt size shown?
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