I have a TG 1860 diesel. When ignition switch is turned to the off position the engine continues to run. Any thoughts on how to fix?
Can't shut off engine
- Thread starter pepstan57
- Start date
Wild and Free
New member
Equipment
B2150 HSD w/Case L340 fel 68" quicktach bkt, 60" jinma snowblower, box scraper
Check the solenoid wire and fuses if they are fine then supply 12v to it to see if it engages the solenoid, if it works and If it is like my B2150 there is a timer relay under the dash that can go bad, this is what supplies voltage to the shut down solenoid for a couple seconds once the ingiton switch is turned off.
I just had to replace mine a few months ago, always had to shut it down with the manual shut down knob.
I just had to replace mine a few months ago, always had to shut it down with the manual shut down knob.
I guess the days of sticking something metal to the spark plug like pliers or a screw driver are long gone...
What spark plug???
Anyway, take the engine cowl off on the injector side. There should be a lever there along the fuel line that shuts off the gas flow to the injectors.
A stop solenoid (as mentioned) should be attached to a rod and then to the fuel shut off lever. The solenoid is about the size of a tomato paste can and will have one or two wires running to it.
To shut off the tractor manually just leave the cowl off and hand operate the lever thus starving the engine of fuel.
Usually the relay keeps the solenoid engaged for 10 seconds, or so, to enable the engine to totally shut down. Just a momentary fuel shut off won't do it.
The problem could be something as simple as a loose or broken linkage. Solenoids and relays are expensive so having them tested before replacing is a wise choice.
My B7500 may not be the biggest or most hp or fancy but to shut the fuel I just pull a lever, no solenoids or timers or relays. Just a simple machine. OK i have on occasion forgot to push the lever back in and cannot figure why the little bugger will not start.
My L3650 had both the solenoid and the manual lever. It was nice to have that manual back up. Especially since that tractor went through three solenoids.
All of my present machines don't have the manual option. Maybe the solenoids on recent machines are much more reliable.
WHOOPS I forgot he said diesel!!! I keep forgeting that the newer mowers can come with diesels in them.
Kubota rtv 1140 cpx
Engine runs away after startup
Have to cut off the air supply for it to shut down.
Machine had some gasoline in the system but i flashed it out and restarted it.
Ran ik for a few minutes but started to run away again and i niticed it not hitting in one injector now.
Injector pump?
Engine runs away after startup
Have to cut off the air supply for it to shut down.
Machine had some gasoline in the system but i flashed it out and restarted it.
Ran ik for a few minutes but started to run away again and i niticed it not hitting in one injector now.
Injector pump?
kubotafreak
Well-known member
Equipment
GRAND l6060, L3560, B6100, gr2100, tg 1860, g1800, g1900, g2160
If the solenoid is broken not working just press the throttle lever on engine with finger to the rear most point. The lever springs to an idle spot so 1/4” past it is the kill.
Start with the basics? Whats the oil level? Being it had gas in it was it cranked on long enough without starting to push enough past the rings to overfill crankcase and now its pulling oil thru the vent to make it runaway? Gas will wash the cylinders and not let the rings seal.
Runaway concern will only happen with an uncontrolled fuel source.
yup and if you roll the tractor over, or if you fall off, it keeps going. Diesel will theoretically run upside down right side up sideways, etc--as long as it can get air it will run. At least until the oil film is burned off of the cylinders and crankshaft and the engine seizes. That typically on the D722 engine, takes 30-45 minutes based on experience.
The stop solenoid design wasn't my favorite. At least the original design. It applies 12V to shut the engine down. It should be opposite, remove 12v like the newer stuff is (stop solenoid mounted directly the block and not to the top of the head).
The TG1860 stop system consists of wiring, fuses, solenoid, keyswitch, and combination box.
With that, you need a WSM to figure out how the system works (if you can read japanenglish) and then decide the best route to take to properly diagnose.
I have seen:
bad key switch
bad combination box
bad ground(s)
bad wiring
bad solenoid
bad safety switch
bad battery
bad fuse (broken not blowed)
bad fuse connection in the fuse box
those have all caused a nonfunctioning shutoff system, those are the ones I can remember. Probably other causes too. So there wasn't really any one component that I can steer you to, you basically have to diagnose it yourself and fix the problem. Electrical issues can be a pain to diagnose in person, even harder without a machine in front of us to actually deal with.
The gasoline has been removed
Flushed the system and filled with fresh diesel and restarted, and it idled great for a few moments but after i shut it down and restarted it the runaway happend again.
Seems like this thread is chasing 2 issues maybe from 2 different people? One is a "runaway" the other "can't shut off". Or am I missing something here?
You missed a thread from 2013 was revived, and yes sounds like 2 different issues.