Problem with Starting New DK4510

[ritcheyvs]

Haney,

Very sorry about your troubles. It's no excuse but auto companies (I am familiar with Mercedes) had troubles going from hydro/mechanical/vacuum/electrical controls to electronic. That was mainly a matter that dealers that were not trained or equipped to diagnose the new systems. Actual module failures were rare but many good modules (which were stupid expensive) got replaced before the real problem was fixed.

I don't have a manual or schematic for your 4510 but I looked at data for a couple other -10 manuals and one or two electronic modules were involved in the start circuit (depending on model and configuration). So, unless it's something simple (like the switch or start relay) it's not a DIY fix, especially without a service manual. I'm sorry I can't be more helpful. Good luck with your MLS adjustment.

I certainly understand your frustration. This should not happen with a new tractor. Period. I don't see any justification for making these new start systems so complicated, even if they were forced to use electronic controls for the engine. I don't know, but I expect most or all of the other brands are just as bad in this respect because many use common vendors. If you decide to get a different tractor you might consider a used (pre-electronics) model. My pre -10 2006 DK45s is not bullet-proof but it is reliable and infinitely repairable (like my 1982 Mercedes 300SD) as long as parts are available.

Good luck.

 

[Coyote machine]

I'd hate to see you give up at this point. Try this brief thread to see what real frustration with another brand tractor looks like. It's a nightmare of horrific proportions, IMHO. See that Kioti is certainly NOT the only one with electrical issues- but bear in mind, it too can be fixed if one stays the course. It takes time but not a lifetime.

https://www.tractorbynet.com/forums...1488-2014-cabelas-lm35h-electrical-issue.html

 

[Haneyrm]

Decided to do a basic tear down of this machine today to see if I could find anything the dealer missed in regards to the starting problem. Got to the property, turned the key, everything lights up but machine will not crank. Same as before. Tried the WD40 in the key slot trick and it did nothing. Fumbled with the key cycling the ignition and just like before, after a bunch of key cycles, the tractor would crank for a fraction of a second. After about 8 fractional cranks, it finally caught and started. Got it warmed up and shut it down. Tried to restart and nothing. Took apart every connector, ground, clamp, etc. I could find and found nothing out of the ordinary. Cleaned the ground connections, took the key switch apart, pulled the battery, etc. Put it all back together and when I went to crank it, I got nothing. Nice.

Decided I would try the key cycling method again and if I could get it to crank, I would do some mowing. Nothing I did would make it crank back up. Out of frustration and while holding the key in the crank position, I started flipping switches and throwing levers. Nothing. Just for fun, I turned the PTO switch on and tried to crank. Obviously nothing. But... While holding the key in the crank position, I turned the PTO switch back to the off position and heard a click like the starter tried to engage. OK. Turned the switch back to the on position, hold the key in the crank position and when I very slowly rotated the PTO switch, the tractor cranked. So, shut it back down and with PTO in off position, turn key and get nothing. While holding key in crank position, very slowly rotate the PTO switch and after about 1/8 of a turn, the tractor will crank. Back to the off position, try to crank and get nothing.

The tractor will reliably crank as long as the PTO switch is manually rotated roughly 1/8 turn while the key is in the crank position. I'm guessing I have a bad PTO switch or something related to the safety switch that does not allow the tractor to start if the PTO is engaged.

Progress.

 

[Threepoint]

[snip]

The tractor will reliably crank as long as the PTO switch is manually rotated roughly 1/8 turn while the key is in the crank position. I'm guessing I have a bad PTO switch or something related to the safety switch that does not allow the tractor to start if the PTO is engaged.

Progress.

Well done! Sure sounds like you've nailed it! :thumbsup:

 

[DieselBound]

OP, excellent detective work!

I might look to spray some good electrical contact cleaner in the PTO switch to see if it helps. But, probably a good idea to see if you can get a replacement from the dealer so that they have the old one to give to the Kioti rep for analysis.

Even my 2006 (or 2008?) B7800, which is an incredibly bullet-proof machine, has given me fits with various switches (safety, mostly).

 

[ritcheyvs]

Any luck with the MLS adjustment? The video for a CK20 showed removing the seat (a real pain). My DK45s has an access plate below the front of the seat (by lowering adjustment) and maybe yours does too. Removing the access plate should make MLS adjustment easy.

 

[Haneyrm]

Replaced the PTO switch today. Tractor fires right up now. Crazy.

I did adjust the MLS valve. You will have to remove the seat. It’s easy but a little heavy. I ended up tightening the adjustment basically until it bottomed out. Seems to work fine. Lifts and drops as normal with no bouncing. Anybody know of any issues with setting the set screw too tight? I assumed if it was too tight, the 3 pt would not drop. It drops fine.