I have a Sears DLT mower that has the 25HP B&S Intek engine. I have been looking for a troubleshooting chart for the engine. It is: MODEL 445777
TYPE 0129 E1
CODE 000731 YG
The issue is it runs great until I turn the PTO on. Then it starts cutting out, flooding, and all around runs poorly. Once you turn the PTO off, it takes a few and it starts running great again. I have no idea if the vales have been checked or the plugs replaced on this machine. I plan to R&R the plugs and set the valves soon. Just wondering if anyone else has had this issue with the Intek.