First off, this is my first post. I found this forumn doing a search for Wheelhorse. Looks great with lots of knowledgable members and post.
I have a 417-8 that I can't seem to get started. The voltmeter comes up to 12 when the key is turned on to the run position but goes back to 0 when turned to start. The starter soleniod will spin the engine when jumped so I guess it is either the switch or a safety switch. I swapped another switch and still the same thing. How do I find, -*test*-('") and/or jump the safety switches to see if that is the problem. Thanks for the help.

, "handyman"!
I guess the first -*test*-('") you can make is to verify that you have power at the bottom single terminal (marked "S") on the ignition switch when the key is in the start position.
If you run a wire from there directly to the trigger terminal on the starter relay (solenoid) and the engine cranks and runs, you have narrowed it down to the safety switches. (2)
One of these is located in the right side of the hoodstand under the drive belt guard and is normally "open" until the belt tensioner arm contacts the switch. (activated by depressing the clutch pedal)
The second switch is located inside the right side of the hoodstand and is activated by the PTO engagement lever. There should be two small reed-type switches fastened together in a very hard-to-reach location. If you follow the PTO engagement rod back from the engine to where it enters the hoodstand, you will find these switches.
It's odd that the "idiot lights" on the dash aren't showing any problem with either switch, but they really aren't very dependable. Perhaps there's a broken wire?

I second the welcome Handyman! Glad you're here!

I would also add that on some of the mid to late 80's tractors, there was a "low oil" switch mounted inside the oil pan. It basically consisted of a switch that was held closed by a float. If the oil was low, it wouldn't start...

That switch ran me crazy for over a week on my 310-8. The tractor had plenty of oil, but the switch was bad!

I have no idea if your 417 has one or not, but I justed wanted to tell you about it just in case. The switch actually replaceds one of the large oil drain plugs in the oil pan.

Good luck!

Kevin

I don't think I have any "idiot lights" on the dash. I did find the switches by the location descriptions. Now...how can I -*test*-('") to see if one is giving me fits? It appears the PTO switch plug next to the battery has quite a few wires in it. Can certain pins on the plug or switch be -*test*-('")ed for voltage or continuity?