Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Not sure exactly what info you are needing. It is hard to explain how to change a belt via typing. What is it you are having an issue with? Do you need a diagram? You should be able to slide belt over both pump pulleys. You will need to remove tensioner spring install belt around front pulley, and then re-install tensioner spring to tighten the belt. Let me know if there is something I am missing that you are needing info on.
You will need to drop clutch down to install the drive belt on the top engine pulley. It is easier to drop clutch down, than move everything that is in the way, but it is your choice. Let me know if you need anything further.