2005 Kabota L3830 starting issues

[angelcowgirl35]

Our tractor has a starting issue, when starting, we turn the key to engage the glow plug when it goes out we then turn it to start sometimes it clicks twice then starts sometimes won't start. We replaced the battery ( 8 yrs old) and starter ( original) and still does it! Any answers? Thanks in advance.

 

[RjCorazza]

Likely one of two things:
-Failing safety switch (seat, clutch, hst pedal, or brake). These are typical locations, not necessarily on your machine.
- Resistance in high amp wiring or connection. Meaning potentially bad connections at the battery, bad cable, poor ground, or high amp connections on the starter itself.

My recommendation is to remove and clean all battery cable connections, including the ground strap. Another way to resolve intermittent issues like this is to install a starter relay that provides 12v power to the starter solenoid directly from the battery, rather than through the safety switch and ignition switch wiring. There is no penalty in this modification other than a little time, and maybe $20 in parts. I have this wiring modification on both of my diesel zero turns, and it's very effective.
Here's a diagram of the wiring:
Good luck!

 

[angelcowgirl35]

Thank you for answering, My apologies, I did this at 5:00 am and didn't give all information. We have a new battery, new starter, cleaned all connections, electrical checks on every wire we could find. One sure told us it might be because the key switch runs everything including the glow plug and that the plug is pulling too much power to start the engine every time. Funny thing is it just started this a month ago. When we turn on the glow plug then try to start it, it clicks twice and nothing. If we just turn the key all the way it starts.

 

[RjCorazza]

Uhm. It could still be low voltage to the solenoid from the key switch wire. The voltage overall is going to be lower after activating the high current glow plugs.
Could also be the switch itself, but I would think the start position is a septate pole on the switch, separate from the glow position.
Measure the voltage at the trigger wire on the solenoid when you start the machine both with glowing, and not. I still think there's low voltage on that wire that is teetering on the limit to actually activate the solenoid.
I could be totally off base though... That's all I got!

 

[angelcowgirl35]

Uhm. It could still be low voltage to the solenoid from the key switch wire. The voltage overall is going to be lower after activating the high current glow plugs.
Could also be the switch itself, but I would think the start position is a septate pole on the switch, separate from the glow position.
Measure the voltage at the trigger wire on the solenoid when you start the machine both with glowing, and not. I still think there's low voltage on that wire that is teetering on the limit to actually activate the solenoid.
I could be totally off base though... That's all I got!

Thank you we we try that, you have been very helpful.