Scot S16/42 Riding Mower (Kohler engine) won't turn over. I have a good battery, new starter motor, new ignition switch, new starter solenoid, good gas, good spark plug, clean air filter, all safety switches work properly - all the normal stuff that prevents a riding mower gas engine from starting checked.
When I turn the key, (yes gas valve is turned on: throttle lever in start/chock position), nothing happens, no click...nothing.
If I use a jumper cable from the positive battery post and touch it to the positive electric starter motor (key in run position), the starter motor will turn over and start the engine.
Sometimes, when turning the key normally to start the engine, nothing happens until I start moving the throttle lever back and forth from the start/fast to normal run rpm's position simultaneously whilst holding the key in the start position - then starter motor turns over, and starts the engine. This is weird!
I have a walk behind mower that wouldn't start and I finally figured out that the safety kill lever cable was stretched and kept the engine grounded. Once I changed out the stretched cable with a new one, the mower started on the first pull every time.
So my question is - does this throttle cable on my SCOT's riding mower also work as a cut-off the electricity ground like the walk behind mower has? if so, the problem might be the same - stretched cable? Or something else going on?
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Sometimes there is a safety switch under the seat that Is malfunctioning. You might want to check that.
Yeah, I "jumped" that safety switch under the seat along time ago, so when the mower gets stuck in the mud, I could get off and push it from the rear as the tires keep going.
It sounds like you have tried several options and it is possible the safety switch is malfunctioning or there could be a wiring problem. If it is a wiring problem it may take someone with a lot of knowledge about this line of mowers.
You can also try posting your information on several of the lawn mower forums and receive useful information.
This may be a little trouble but they usually always try to help. They will also know what questions to ask to get to the real cause of your problem.
Some of the posts may seem 'old' but these are just some sort-of related answers as the members usually answer right away.
www.gardentractortalk.com/
www.mylawnmowerforum.com/
www.mytractorforum.com/
www.lawnmowerforum.com/
www.tractordata.com/
This is a YouTube video but the poster will also answer questions:
www.youtube.com/
Check ALL safety mechanisms. Any one of them will not allow the engine to start.
How about checking battery connectors, sometimes they get loose or become worn. This keeps your engine from getting the proper charge.
Yeah, all battery connections have been cleaned and are tight!
Have you checked the wires?
One guy had a similar problem with Scott's S1642 riding lawn mower with a Kohler 16 HP - "When you turn the key over, nothing happens.": www.lawnmowerforum.com/
Perhaps this discussion will help you too: www.mytractorforum.com/
A couple of days ago it started nice and normal with the ignition key on the first try.
Later it stalled, and I had to get the jumper cables to get it started again!!!
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