DK50HST will not turn over

[acme97]

I can not get the tractor to turnover. The dash lights will come on and show that the HST is in Neutral and the PTO is not engaged, but when the key is turned nothing happens. I've moved the gear selected through L,N,M,N,H and the correct indicator shows on dash. Any suggestions on what the problem might be?

 

[Coyote machine]

What does the battery read across the posts when you turn the key to crank?
Do you hear a distinct 'click' when you turn the key, slowly, toward crank? If you're battery voltage drops from say 12.5 or therebout when you reach crank position, to 11 volts or less, your battery is not supplying enough amperage to get her to crank over.
Also, depending on hours on the machine, (which are currently?), the ground cable to the chassis may have adequate corrosion to keep it from starting. Check both cables at the battery posts, the chassis, etc., and make sure there is no corrosion inside the cable sheathing near the ends.
The key switch itself could also be bad/flakey, they have at times been problematic.
Report back results on everything else first. Once you have stop solenoid loud click/clack when turning the key toward crank she should start, OR you may have key switch/relay issues. one step at a time.:thumbsup:

 

[k0ua]

If I had to put a ranking on the failure likelyhood, provided the battery is charged.

1 start relay (its the one on the left as you view the firewall looking towards the seat)
2 key switch not throwing battery voltage to high side of start relay
3 ground connection.
4 cruise unit (connection 16) not throwing ground to low side of start relay
5 steering diode in series with the low side of relay connection coming from cruise unit.
6 suppression diode across start relay coil
7 Cruise module defective
8 Range selector sensor potentiometer that feeds cruise module Not likely if the ranges light up.

swap starter relay and fuel solenoid relay (3rd one on the right.) See if it will crank, but not start.
Relay is generic, does not have to be Kioti part. If it cranks, you have found your problem.. Relay is most likely failure followed by switch

Do you have a meter and know how to use it?
judging by your pix, it is the cab model.

 

[Jmsmithy]

You can probably jump it. Dealer showed me how to get me through maple season. I had exact problem w/ my 2013 40. Dealer explained some kind of faulty switch. Replaced it ( warranted) and been fine ever since...