TG1860 Diesel Dies when parking brake released

nashguy

New member

Equipment
TG1860 48" Deck with bagger
Jun 23, 2018
17
0
1
Nashville,TN
TG1860 Diesel as stated in Title when I release parking brake the engine dies. Not sure if this is related or not but had a new pto put on at dealer over the winter when i first started mowing this year the pto would not come on intermittently I found the plug that comes off the clutch was not staying plugged in all the time i fixed that and was mowing yesterday and the pto shut off all of a sudden had pulled in garage to check the connection of clutch plug fiddled with a little went to start mower and now everytime i let the parking brake off it dies. I'M new to the forum just seeing if i can find some help before i take it to the dealer.

Thanks Bob
 

D2Cat

Well-known member
Lifetime Member

Equipment
L305DT, B7100HST, TG1860, TG1860D, L4240
Mar 27, 2014
14,199
6,341
113
40 miles south of Kansas City
Might check the switch under the seat. You have to be on the seat (switch closed) when you let off the brake or the engine shuts down. A safety feature! That switch may not be working.
 

nashguy

New member

Equipment
TG1860 48" Deck with bagger
Jun 23, 2018
17
0
1
Nashville,TN
That switch has been bypassed for years have also check fuse under seat and all fuses behind dashboard.
 

coachgeo

Well-known member

Equipment
L225 w/woods Few Mowers & Back Blade, D722 in Motorcycle (Triumph Tiger), LMTV
Nov 16, 2012
2,459
37
48
Southern OH
there is a safety switch in the clutch system and break system too I bet. sounds like dealer may have pinched or nicked a wire in any one of the safetfy switches creating a short that shuts your engine

orrrr... out of protocol??? dictated by Kubota's lawyers???? saw your bypassed safety switch..... and wired it back up??
 

nashguy

New member

Equipment
TG1860 48" Deck with bagger
Jun 23, 2018
17
0
1
Nashville,TN
Has nothing to do with safety switch under seat it has been like that for years and been to dealer several times with that switch like that. This is my dads mower as i said in the original post he was mowing and the blades just stopped mower would still run and drive fine he brought it into garage to check the connection of the clutch plug it had been coming unplugger the way the dealer had ran it when they put in new clutch I had ran the wire a little different and also put electric tape around the plug he brought it into garage and checked the wiring and plug of the clutch he said he didn't do anything else know when you start the mower and release the parking brake the mower dies instantly.
 

rut3556

Member

Equipment
TG1860
Oct 23, 2015
116
21
18
NH, USA
>>there is a safety switch in the clutch system and break system too<<

See above. Mine has gone a couple of times in the 19 yrs. I've owned it.
 

nashguy

New member

Equipment
TG1860 48" Deck with bagger
Jun 23, 2018
17
0
1
Nashville,TN
>>there is a safety switch in the clutch system and break system too<<

See above. Mine has gone a couple of times in the 19 yrs. I've owned it.
I figured there was a safety switch for the clutch and Brake. Can you tell me where they are located and the best way to test them Also are you talking about the above post when you say see above not sure I understand?
 

85Hokie

Moderator
Staff member
Lifetime Member

Equipment
BX-25D ,PTB. Under Armor, '90&'92-B7100HST's, '06 BX1850 FEL
Jul 13, 2013
10,917
2,737
113
Bedford - VA
Seat switch is ok it is not the problem!!! Is there a kubota mechanic on here?
Nash, brother Nash......

lets look at these he'r nice felllers - THEY are all mechanics.......AND ALL OF them are telling you to LOOK at the electrical problem that you have!!!

YOU do not need a mechanic - you need a electrician! AND these guys are trying their best to help you with that!

Now this is whatcha said " pto shut off all of a sudden had pulled in garage to check the connection of clutch plug fiddled with a little"

so based on that statement - YOU HAVE a @#$@#%^@#@##$ (that there is cussing) safety switch problem!!!!

It might be in the seat!!!!
It might be in the clutch
It probably is related to the PTO .....

so ...listen to they nice fellers - check ALL that again, and again! AND bullya you will find the problem!

Got a volt/ohm meter? It will be your best friend - I promise;)
 

lugbolt

Well-known member

Equipment
ZG127S-54
Oct 15, 2015
5,401
2,095
113
Mid, South, USA
Seat switch is ok it is not the problem!!! Is there a kubota mechanic on here?

Not I. I'm just a professional parts changer.

So you've ascertained that the seat switch is not the problem. I suggested to check the connection at the bypass mechanism. Many times I see them with a piece of wire stuck between the connector contacts; and over time the contacts and/or the wire will develop either corrosion or just get loose. THAT is why I suggested to check it. Easy enough? Plug the &&E$#@ing thing back in where it belongs.

Lets's see. You're saying the switch isn't the problem. There's a switch on the brake, one at the PTO (obviously), key switch (aka main switch), a combination box, AND plenty of wires that can be defective. So now's your opportunity to learn how to diagnose it. NONE of us parts changers can diagnose your issue without being in front of it, and if we could, do you think we'd be out in a 100+ degree shop day in and day out? Heck no, we'd be sitting in the a/c'd office in front of a computer charging for our knowledge. And I'm considering changing careers because of the CRAP that people put me through on a daily basis...phone calls such as "my Kubota won't start what's wrong with it...and why can't you fix it for me over the phone you dumb *$#(*ing moron?" After close to 1/3 of a century in this business, I see the change that society has endured and have done my best to keep up, but I'm about to throw in the towel. I've made what I need to make, have enough to live on for a few years...and at this point could care less if I ever see another Kubota.
 

D2Cat

Well-known member
Lifetime Member

Equipment
L305DT, B7100HST, TG1860, TG1860D, L4240
Mar 27, 2014
14,199
6,341
113
40 miles south of Kansas City
Hey Lugbolt, he doesn't want to take it to a dealer (he is probably concerned about cost), but doesn't want to listen to anyone who might be able to shed some light on what he described as not working.

He could go on line to one of those links who will chat back and forth and make similar suggestions and get it fixed for an easy solution of $10-$15. But that also takes patience and he know what it isn't!

I think it would be fitting if he took it to a dealer and the tech discovered the wires he (or someone) disconnected from the operator presence switch and scabbed back together came loose (as has been suggested here)....and his bill is north of $75.

I live next door to a genius. He told me so. By him, has an IQ of 164 and a double major (in something).

Last week my wife told him his propane tank was leaking because she could smell it. No, he responded that's a dead animal. We've been smelling it for a couple of weeks. A couple of days later she texted him telling him she could smell it when she went over to let their dog out. She even went over by the tank and could hear a hissing sound. She told him to take some soapy water and spray the lines. He finally did. And as he sprayed each connection he declared "That's not leaking." She said, "Spray here". Big bubbles burst up. He grabbed his phone and called the co. who installed his emergency power setup to get out and fix it.

He couldn't, or didn't, understand he could get two wrenches and fix it in a moment.

Naw, sometimes you got to let those folks fend for themselves. Hopefully, it eventually comes to them!
 

nashguy

New member

Equipment
TG1860 48" Deck with bagger
Jun 23, 2018
17
0
1
Nashville,TN
Guys first I want to apologise if I came off the wrong way. and Its not that I was concerned about the cost of taking it to the dealer its just that my dad and I do not have much faith in our dealer the service department is not very good and it seems they do not know what they are doing on the smaller kubota stuff on large tractors and construction equipment they seem to do a great job but on the smaller stuff they do not know how to fix them very well it seems. Its was that everyone was telling me to check things I had checked before I got on here I knew it wasn't the seat safety switch i had checked it several times with a volt/ohm meter I new it wasn't the clutch or a couple of other things mentioned I'M on another forum related to by business and in the service repair area they do have service techs and mechanics on there from several different brands that are very helpful. Once again please accept by apology if I came across the wrong way
 

nashguy

New member

Equipment
TG1860 48" Deck with bagger
Jun 23, 2018
17
0
1
Nashville,TN
IT'S Fixed!!! I called a dealer and got them to fax me a wiring diagram and figured out it was what they call the Timer,Key Stop. Got the part and all is good It must of coincidentally went out when my dad pulled it in the garage I also found the problem why the blades shut off while he was mowing when the dealer replaced the clutch the way the ran the wire and plug off the new clutch it was getting crushed and pinched everytime you raised the mower deck as I said we do not have much faith in our dealer Thanks for all the suggestions and everything if anyone that owns a TG1860 and when you start it and release the parking brake and it dies check the timer, Key Stop that is most likely your problem.
Thanks Bob
 

Jim L.

Active member
Jun 18, 2014
857
159
43
Texas
I certainly hope that any one offended will accept your apology. Many times trying to fix something we all get a bit frayed and anxious.

Many of the members here are in the summer heat and that can lower your threshold of perceived slights.

Also you get points for coming back and describing the real fault and how it got fixed. So many posters never bother to do that, they don't think of helping someone else who may end up looking at the same situation, but who are glad to get a free answer without any thanks.
 

nashguy

New member

Equipment
TG1860 48" Deck with bagger
Jun 23, 2018
17
0
1
Nashville,TN
Jim L I understand about being in the summer heat and it getting to all of us. Whats the use of a forum if you start a thread and then do not post solution that doesn't seem to help anyone Also not sure how my apology got posted twice didn't realize I had done that the cam delete the duplicate with my permission. I would more than happy to help anyone on here at anytime I can. Hope everyone has a great weekend. God Bless!!!
 

RCW

Well-known member
Lifetime Member

Equipment
BX2360, FEL, MMM, BX2750D snowblower. 1953 Minneapolis Moline ZAU
Apr 28, 2013
9,750
6,383
113
Chenango County, NY
Jim L I understand about being in the summer heat and it getting to all of us. Whats the use of a forum if you start a thread and then do not post solution that doesn't seem to help anyone Also not sure how my apology got posted twice didn't realize I had done that the cam delete the duplicate with my permission. I would more than happy to help anyone on here at anytime I can. Hope everyone has a great weekend. God Bless!!!
Nash - You're a good man.:D

Everybody wants an answer yesterday. It's the 21st century, and your "Google" should find it in 20 seconds....

Doesn't always apply to a particular fix to a particular tractor, does it???

I'm so glad you found your fix. By the way, there's a bunch of mechanics here; several that do Kubota's every day for a living.

Jim L. expressed appreciation for your solution......So often, we hear from a new guy with a problem.. he gets an answer, and we never hear back if it worked or not....

Bottom line, you hit the nail on the head...it's useless if you don't help the next guy.

You did that, and many folks here look forward to your continued participation!

Welcome!!
 
Last edited:

nashguy

New member

Equipment
TG1860 48" Deck with bagger
Jun 23, 2018
17
0
1
Nashville,TN
RCW thanks. I am on a couple of other forums and I agree about people come looking for answers or solutions to problems then you never here from them again and you have no idea if you helped them or what the solution was that doesn't help any of us. I will be glad to try to help as much as I can I do not have a lot of knowledge about kubotas though. LOL Have a great day. Godc Bless
 

North Idaho Wolfman

Moderator
Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
32,731
8,257
113
Sandpoint, ID
Yes thanks for coming back and posting the info, I would have not thought the stop timer could do that, good to know! ;)

WOW I missed a few posts on here... Yikes... Heat stroke struck!

There are quite a few really good mechanics on here, but as Lugbolt said (rather colorfully) sometimes it's really hard on us because we have to cover all the bases of what could be wrong.
I can't tell you how many times I've had to fix the, it won't run tractor, its a pain in the backside.

So stick around and join the banter it only gets better with time!
 
Last edited: