I bought this mower with the hope of repairing the self propelled function but I know nothing about them. The pulleys are there at the bottom of the mower but there is no drive belt. I took off the cover of the clutch and the cable was disconnected. I can see where that goes but there is also a spring and I can't see where it is supposed to go. Any help with that would be appreciated. A manual would be good. Model number is 861MH3.