Starter Switch Issue

I have a Kubota L3000 purchased used (100 hours shown on the meter) appx 10 years ago. The starter ignition switch has always been an minor issue. I would turn the key to the left to warm the glow plugs then the right to start. Often it would take several turns to engage and start the engine.

Yesterday I did small chore with the tractor (started with normal 2 or 3 key turns). Then latter in the day I tried to start the engine again and it would not start. The ignition lights lit but would not engage the starter. The tractor now has 420 hours.

I had the battery checked and is at 90%. As the starter key switch has been problematic can I assume the starter key switch needs to be replace?

I appreciate your input.

ironpony said:

A little trouble shooting here, could be a relay? between the switch and starter, loose connection? starter solenoid itself? I have seen switches replaced and not fix the problem.

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At this point I have not removed the panel that contains the ignition key switch, the head lights and the safety flashers.

I would have assumed that the issue is intermittent that is it is the key starters. Wouldn't the starter solenoid be either good or bad ...not intermittent?