I'm sure you are just as frustrated as I am, we can only cure it together. So, we know the green wire is the kill wire. Whenever it is grounded, the engine will not start, and if it is already running, it will stop. Now, we need to connect the green wire to the mower's kill wiring. That is the black wire marked 8 (Insert edit: this should read wire 6, not wire 8)on the wiring diagram, it was once connected to the black kill wire that came out of the Briggs engine, and now we need to connect it to the green kill wire on the Tecumseh engine. If the black wire 8 (Insert edit: this should read wire 6, not wire 8)ends in a spade connector, it can attach directly to the green wire where it ends, on the engine. If you can find that black wire that was being used previously it must be wire 8 (Insert edit: this should read wire 6, not wire 8), and if you attach it to the green wire's spade connector, we hope it will do exactly what it did when you had the Briggs engine.
1. Can you find black wire 8 (Insert edit: this should read wire 6, not wire 8), and was it the same wire you previously connected to a black wire coming out of the Briggs engine?
2. Did the Briggs engine stop when you got off the seat with the blades running or the handbrake not on, or when you turned off the master switch?
3. If the answers to Questions 1 and 2 are Yes, can you connect wire 8 (Insert edit: this should read wire 6, not wire 8) to the green wire's spade connector, and tell me whether it now works exactly as it did on the Briggs?

Last edited by grumpy; 01/07/12 10:45 AM. Reason: Insert edit correcting error