Engine Kubota G2000 won't start - any tips?

[Jbbb]

Have a Kubota G2000 that will not start so hoping I can get some good tips on here. Here are the symptoms and what I have checked so far.

A few weeks ago the mower started up fine: when I would turn the key to accessory I would get the red lights on the gauge panel and then if I turn the key fully to start, the starter would crank and mower would start.
The next day I tried to start it; I got the red lights on the panel but that's all - no noise from the starter. After a few attempts I was not even getting the red lights from the panel.
The battery voltage was fine and I could start the mower by shorting the starter itself (so starter and battery are fine).
I checked the 2 power fuses under the panel and they were good; I looked at the fusible link; it looks fine and passed a continuity check.
My first thought was the key starter switch. There is a 4 pin plug which connects to it. Can I short certain pins together to start the mower and prove it is/is not the switch?
And if the switch is not bad not sure where to go to next. I would appreciate any tests to perform, checks, diagrams, suggestions, etc. Thanks.
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[mechanic mark]

Visually & hands on check all safety switches & relays making sure they are tight & secure as well as all wiring including ground cables & straps for engine. You may want to unplug, visually inspect looking for burn marks, etc., each connection one at a time. Let us know what you find, thanks.

 

[Rivets]

This is the procedure I follow, might help you.





Electrical* problems can be very easy or very difficult, depending on four things.
1. * How well you understand basic electricity.
2. *What tools you have and know how to use.
3. *How well you follow directions.
4. *You don't overlook or assume anything and verify everything.

Remember we cannot see what you are doing. *You are our eyes, ears and fingers in solving this problem. *You must be as accurate as you can when you report back. *The two basic tools we will ask you to use are a test light and a multi-meter. *If you have an assistant when going through these tests it would be very helpful. *These steps work the best when done in order, so please don't jump around. *Now let's solve this problem.

First, check the fuse(s), check battery connections for corrosion (clean if necessary) and *voltage - above 12.5 volts should be good.*

Second, check for power from the battery to one of the large terminals on the solenoid. *One of the wires is connected directly to the battery and has power all the time so one of the large terminals should light a test light or show 12 volts on a meter at all times.*

Third, *check for power at the small terminal of the solenoid while depressing the clutch/brake pedal and holding the key in the start position (you may need an assistant to sit in the seat to override the safety switch). If your solenoid is a four wire solenoid, check both small wire terminals as one is ground and the other is power from the ignition switch. *If your solenoid is a three wire solenoid, make sure the solenoid body is not corroded where it bolts to the chassis of the mower as this is your ground path back to the battery. *If in doubt, remove the solenoid and clean the mounting area down to bare metal. *If there is no power to the small terminal then your problem is most likely a safety switch, ignition switch or in the wiring.*

Fourth, check for power on the other large terminal of the solenoid while holding the key in the start position (you may need an assistant to sit in the seat to override the safety switch).*

Fifth, check for power at the starter while holding the key in the start position (assistant again).*

Sixth, check your ground circuit back to the battery.

After you have gone through each of the above steps, let us know what happened when you did each step. *At that point we will have great info to tell you how to proceed. *Remember you are our eyes, ears, and fingers, so please be as accurate as possible.

Be as specific as possible with voltage readings as this will help diagnose your problem quicker. *If you do not know how to perform the above checks, just ask and I will try to guide you through it. *Youtube also has some videos and as you know a picture is worth a thousand words.