I discovered that the problem was the safety switch for the mower deck. It has come out of its mounting position, but I can't figure out where that is so I can put it back. The switch is located on the left side (when facing the front of the mower) below the gas tank. There is a small (3/4") square hole in the sheet metal where it appears that the button on the switch could portrude thru, and that possibly there was a mounting bracket that held it in place (this is the case with the safety switch under the seat). However, there doesn't appear to be anything beneath that hole that would make contact with the button when the mower deck lever is raised and lowered. Any suggestions on the proper location of this switch? I have taped the button down as a short term fix so I can use the mower. Also, although unrelated to the starting problem, the brake pedal is definitely having trouble stopping the mower. What's the most likely cause and fix for this? Thanks!

To the OP. Maybe the philosophy is that with no mowing deck, it is no longer a mower and doesn't require the safety switches. Still, you may want to run through the what ifs in your mind and be sure that is the right choice. Seat switches are even a great tool as if you should fall off, the tractor will at least stop, not keep going and do damage to something else. Onward to your project: You could use a variety of switches to crank, shut off and run the headlights- but you could really do that with one switch. If you will be rewiring it anyways, just the cheapest ignition switch that would replace what you have would work. Some switches have a light function in them. It would be a cleaner install. Don't forget the fuse in the wire that travels from the solenoid to the + on the switch. JRJ- unsure why you didn't start your own thread , but it sounds like you have a problem with the seat switch or the wiring. Please start a new thread should you need more help.

IMHO, I'd check all the safety switches and wiring first. There's one on the brake, seat, and PTO. Depending on vintage, may also have a solenoid on the carb which shuts off fuel also. Is the plug wet or dry after trying to start? You might consider investing in a cheap "spark tester" I've attached a link for a "typical" one. They're available all over for more or less $. Put it between plug and cable and watch for spark. Immediately tells you if it's ignition of fuel issue. http://www.amazon.com/Fool-proof-Engine-Ignition-Spark-Tester/dp/B0042KJV9U/ref=sr_1_2?ie=UTF8&qid=1428690474&sr=8-2&keywords=spark+tester You might also check the vent in the gas cap. e.g. Will it run with the cap removed? Good luck, Ev

I have a Heinrick riding mower with 18hp briggs and stranton and cant find the wiring schematics for it anywhere. Can anyone tell me how to rewire it to bypass the safety switches? Thanks in advance.