There are no belts on this machine. You have a rear roll clutch (for mowing in confined spaces) or you can operate the machine on the centrifugal clutch and throttle control (for continuous mowing of unrestricted grass areas. I have disassembled all the clutches and cleaned them and lubricated them. They all work with chain and sprockets. I have adjusted all the chains for the correct tension according to the owners manual. The clutches are all in good shape and working correctly. This is why I do not understand why I can't control my walk behind speed. I really appreciate everyone's help. I will keep trying different things and if anybody has any ideas shoot them my way. Again, Thank you all for your much needed help.
