Reasons for your Kubota lawn mower starting problem: Empty fuel tank Old fuel Bad gas cap Bad spark plug Clogged air filter Bad fuel pump Plugged fuel filter Clogged fuel line Dirty carburetor Bad battery or loose cables Bad safety switch Bad ignition switch Bad recoil Bad ignition coil Faulty charging system Incorrect starting procedure I'm stumped checked wires as much as I could without stripping down the whole harness. This problem may occur in two situations. the motor is a D1005. A multimeter can also be used to help identify a bad switch. I have a kubota zd21 that loses power when I put a load on it. When no visible signs are present, you will need to take some steps to determine if your fuel pump is bad. One by a contact in the starter. Explore additional items they have for sale. One through the controller. Solved! But this particular problem happens when the starter solenoid kicks but wont engage. If the issues are properly diagnosed, solutions will be simple to implement. OrangeTractorTalks brings together Kubota enthusiasts from around the world, into one place, purpose built just for them. Use the arrow on the plastic housing when installing your filter. I pulled each one of the fuses still no good. But make sure to turn to the on position first. Apparently the author has never actually owned or seen a ZD1211 . If you sit there with the key on and all the levers in the start position you will hear that relay open, move a lever and you hear that relay click again closing. One through the controller. Old fuel that gummed up can become lodged in your Kubota mowers fuel line preventing fuel from moving through your fuel system. Spring return closes it and engine shuts off. I may consider running a hot wire directly to the exciter on starter and see if she cranks. The Fora platform includes forum software by XenForo. Next, remove the filter and use compressed air to blow out the majority of the dirt trapped inside. so it would seem it will be: 1. Any thoughts on how to fix? This YouTuber does an excellent job of walking you through the process visually: If youve checked your fuel lines, and youve checked your fuel filters, and youre still having issues with your Kubota tractor starting and then shutting off, its time to check the fuel pump. Some might even suspect the loose fuel cap can cause this trouble. I have eliminated the starter, fuses, battery and ignition switch. If youve checked the fuel lines and youre still experiencing issues, the next thing youll want to check is the fuel filter. This clogging can prevent your Kubota mower from starting. just not linking.So, new theory is the ignition switch or the main power wire running from battery to starter? If the fuses and battery cable connections check out, I would try jumping the starter solenoid to see if the engine will turn over? The ZD21 required removing the deck every 50 hours of operation to grease it and check the mower drive gear box oil level. If you have the early one, you can actually manually shut the thing off by moving the lever by hand. When the wire from the control module gets 12volts the relay will open allowing juice to flow from the key to the starter. Kubota ZD21F (With rops) Parts Diagrams - Messicks But in reality, its the clogged fuel cap (from grass, dirt, or sand) that can cause this problem. #1 I researched how this machine works and it has a fuel shut off solenoid that receives 12v of power for 10 seconds when you turn the key off. Would be crazy if the solenoid is bad and wiring is broken! There is a small fuse box with 5 fuses in it and it appears a white wire comes out of the bunch and goes in but I can't get continuity between the end of the wire going to the solenoid and that white wire. 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. Seems it can only be one of the 2 if everything else is checking out. See these articles for more insights: Diesel Tractor Running Rough? Why Fiberglass Windows Are Not Popular And Are They Worth It? Your mower may refuse to turn over if any of its electrical components are faulty. Meaning a wire or connection could be corroded in the safety switch circuits. Fix:Clean your paper filter element by removing it from the air filter housing. I have 275 hours on it! Make the belt, spindle housing, pulleys, and mounting brackets are all in good working order. A click or hum when turning your ignition key is an indication to check your solenoid. If the solenoid is broken not working just press the throttle lever on engine with finger to the rear most point. Thinking the starter next? The first thing youll want to do is visually inspect the filter. If the keystop system is not working check fuse and interlock switches. It pulls an arm in which pulls another lever to stop fuel from getting to the engine. I'm not sure if maybe I fried the solenoid stop during my testing of other things but bottom line is it starts right up now but runs at full throttle, smokes, and won't shut off. Z400 Kommander PRO SERIES I should probably check that too. Follow the safety precautions listed in the Kubota owners manual including removing the spark plug wires before beginning repairs. This portion of the fuel system acts as a screen, protecting the internal portions of the engine from dirt, sludge, and other loose particles that can damage the engine if they get inside. Fuel Shut Off Solenoid Valve for Kubota Zero Turn Mower Models - eBay Some people even dont know there is a shut-off valve. When I mean not start I mean the shutoff solonoid will actuate like it should but when you turn the key it does nothing. I checked all of the fuses and they look fine. I guess the days of sticking something metal to the spark plug like pliers or a screw driver are long gone 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. Refer to your operators manual for the location and function of all safety switches on your Kubota model. Fuel Shut Off Solenoid 16851-60014 052600-4531 for Kubota BX2230D The picture below is NOT from my mower, I just wanted to show what I was looking at with the 12 wires. 13. Check your stop solenoid and make sure its getting power. When it clogs and no longer vents, a vacuum is formed in the fuel tank not restricting fuel flow to the engine. For the price, you expect at least 2000 hours of pain-free operation before anything major happens. Kubota Tractor won't startTry This - YouTube Before I get into the detailed problems with Kubota ZD1211, here is a short overview of Kubota ZD1211 problems: If you think about it, none of these complaints are unique to the ZD1211 mower. Replace your solenoid if it is found to be bad. The PTO has been replaced $ 4000, had some repairs done to the deck, mainly bearings etc. My zd21 has done that before, it was the fuel shutoff solenoid. First thing I tried to do was find where the white wire going to the solenoid goes to but it goes in to a bunch of wires that I can't see where they go. I put it under the seat and hooked it up and it fired right away. You can find plenty of Kubota ZD1211 reviews across multiple review sites and YouTube but none of them completely cover the common problems of Kubota ZD1211 zero-turn mower. Might be a bigger deal if you are using it commercially, but to raise the hood and kill the engine once a week when I mow isn't a problem. Does it sound like glow plugs need to be replaced? If there are any connectors in the circuit you could have a defective connection there. https://www.manualslib.com/manual/748785/Kubota-05-Series.html?page=7#manual. Wild and Free New member Equipment B2150 HSD w/Case L340 fel 68" quicktach bkt, 60" jinma snowblower, box scraper Oct 25, 2012 390 0 0 The carburetor can gum up and clog so it no longer can function correctly. Fix:Replace a plugged fuel filter with a new filter. Heres what Ive learned about why this happens and how to deal with it. Copyright 1995-2023 eBay Inc. All Rights Reserved. This YouTube video demonstrates the process: If the components of the fuel system are in proper working order, you may have an electrical issue with the unit responsible for the emergency fuel shutoff device, also known as the fuel solenoid. Hydraulic cylinder.. 2. which makes me think the module is the problem. Put the lever back and click it opens. I arrived to the site to inspect it and upon arrival it appeared to be empty of coolant in radiator and overflow bottle. I bought a Kubota remanufactured starter for $177 after the $40 core allowance for my broken one and its back to starting like new. It turns over but won't start until I've tried it 10 or 11 times. Apparently, it misses grass and sometimes even spits out clumps. Sometimes just unplugging and reconnecting a connector is enough to do it. If you can, go ahead and reuse it. There is a lever on the right side of the engine that I can push to the rear to make it shut off. I removed the lower piece in the picture as well and it had a bit of corrosion on the connection. I think the sws one is no the other nc. The later ones, you can't do that with them. Check all you harness and connections at your batteries and starter. Once you reinstall or replace your spark plug, make sure the wire is securely connected so you can rule out spark plugs as the cause of your starting problem going forward. If the filter is clean you could have an obstruction between the air filter and the engine intake. If you dont see anything, try disconnecting the lines, one at a time, and blowing compressed air into them. Make sure your battery cables are secure and the connections are not showing signs of corrosion. According to some reviewers and users, the mower is like a tank and Kubota has over-built it. You may have to clean and replace your filters more often if you are operating your Kubota mower in dusty dry conditions. KUBOTA ZERO-TURN MOWER Kubota's all-new ZD Series of compact and full-size zero-turn mowers have been engineered from the ground up to deliver quality, performance, comfort, and versatility. This can be caused by several variables within the fuel system itself, but it can also be caused by an airflow issue. Fix:Install a new spark plug when the spark plug is unable to be cleaned effectively, has a dark tip from buildup, a burnt electrode, or a damaged porcelain insulator. One by a contact in the starter. Dec 20, 2005 On a 60" deck I'm assuming? Disclaimer | Terms & Conditions | Privacy Policy | About Us | Contact Us | Accessibility Statement | Sitemap, Mailing Address: 5110 28th Street #1056, Grand Rapids, MI 49512 phone [emailprotected]. As mentioned earlier, proper airflow to an engine is just as important as the flow of fuel. (Fuel will not flow if the line is higher than the tank because fuel will follow gravity. But what gets so disturbing is that even if you replace the starter with a new one, you may still face the starter problem. But first, check out this chart of common problems and their simple solutions. How do I know. . It leaves me to beleive its a safety switch that has failed. View estimated shipping costs, delivery windows, and return policies at a glance. Stumpy New member Equipment L175 Dec 1, 2011 848 1 0 NE Ohio Apr 23, 2013 #2 Check your stop solenoid and make sure its getting power. If your Kubota tractor is starting OK, but then shutting off, you most likely have an issue with fuel starvation. When troubleshooting a potential airflow issue, youll first want to take a look at the air filter. 900 hours. Hope you find the issue. I had the exact starter problem presented. Periodically check and clean your air filters regularly through the mowing season. Wiring connections corrodes and makes the circuits not function right. What mfg/model engine do you have? To check the air filter, remove the filter cap and tap out any visible dirt. The fuel system of any mower can become faulty. are recorded by their users. Some will say that the diesel power 21 or 22 HP is plenty on a 60" deck. Purchased a used 2004 Kubota ZD21F last fall. I put it under the seat and hooked it up and it fired right away. For information on other types of air filters read my articlehere. Am I able to test that wire for power with the solenoid unplugged? Thanks for any advice. So, its a good place to inspect! If you are unsure how to perform diagnostics and repairs on your Kubota lawn mower safely, its best to have a professional complete the repairs. Fix:After you verified your spark plug is in good condition, check the continuity of your ignition coil usinganohmmeter. If you drop me a PM with your email address I can send you an article about adding one of these relays along with a schematic. The majority of consumers appear satisfied with their Kubota ZD221. Actually for how i wired the bypass for my mower i have a hot wire off the starter that is fused then split into 2 wires. Then check again in the off position ( you should have no power to your shut off. Just weird the battery and something else would fail at the exact same time, although very possible. Whats the oil level? Being doing that for on to 12 years now and it works fine. Iirc There is a module. A plugged filter restricts the amount of air your engine receives. 2nd wire goes to the hot side of the fuel shutoff. You can have that unplugged and the mower will run. Fix:You can attempt to clean your cap and try to remove the clog. Jun 22, 2017 / Kubota 28hp engine won't shut off #2 If you are not getting flow, your fuel restriction is prior to the pump. It's still quite popular now. #1. if your Kubota tractor won't start watch this video - and try this first. A lawn mower solenoid is an electromagnetic switch that is like an on-off switch that actuates the starter motor to turn over the engine. If the PTO system is normal, a damaged mower belt might be the source of the problem. If the fuel pump has a block in it, this is going to prevent fuel from being converted to power. Learn how your comment data is processed. For a better experience, please enable JavaScript in your browser before proceeding. If you have a pulsating or constant flow of fuel, your fuel pump should be fine. Established in 2009, we are the largest online community of Kubota tractor and equipment owners. ZD221Tractor / Zero Turn Mower cranks but will not start. J. I have a kubota zd21 that loses power when I put a load on it. To be used as energy in an oil-powered machine, fuel needs to flow through the engine via a process known as combustion. Number on the plastic box is K3111 62511. 5 Most Common Problems with Kubota ZD221 (Solutions Included) Follow all safety instructions provided in your equipment operators manual before diagnosing, repairing, or operating. I checked the 20a fuse and it seems like it is still good. Many people get injured by mowers annually by rolling them or falling off the mower. I have continuity tester and began testing connections to control module. Have you checked all of your fuses? Seller assumes all responsibility for this listing. This will help you understand whether its worth having it or not. Jun 3, 2009 Messages 7 Location Tennessee Tractor Kubota M7040 4wd I had my Kubota ZD 21 zero turn loaded onto my trailer this afternoon and I went to unload and park it in the barn, but it wouldn't cut off. If the answer is yes, you should purchase a replacement. Diesel Tractor Starts But Wont Stay Running: Fix-It Guide, How To Propagate Red Chokeberries: The Complete Guide, How To Prune a Red Chokeberry Bush: 5 Easy Steps. 2023 TractorByNet.com | TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners. Be sure you have good air flow. I would suggest checking the battery connections and main engine ground if you have not already done so. On my skid steer with a Kubota, that thumb screw is to help bleed the fuel system. It still ran. When i turn key to "start" only 1 more prong seems to get power totaling 4 of the 12 prongs. Open the hood and on the right side of the engine it will be underneath the air filter. Z100 Kommander SERIES The ultimate residential zero-turn mower, the Z100 kommander series combines style, comfort and performance. Fuel caps are designed to vent. I didn't try cranking it back up, for fear that it wouldn't cut back off. This amount is subject to change until you make payment. Though it happened for a few, it happened where the transmission failed before 600 hours! The solenoid opens and closes the fuel shut off. My diesel kubota ZD21 has roughly 800 hours on it in which It will sometimes start and sometimes not start at all. Fix:Test your battery with a multimeter. Traveler, food lover, interior designer, and blogger. They don't die often. I am now trying to confirm if there is another problem with the combination box because the solenoid wire is not getting power when it should. Thanks. When I mean not start I mean the shutoff solonoid will actuate like it should but when you turn the key it does nothing. Replaced the fuse and i was back . Any suggestions would be helpful..thanks. Your email address will not be published. With the engine running you can manually close the fuel shutoff by hand. I tested the solenoid by itself already and it is confirmed to not be working. One is a "runaway" the other "can't shut off". For additional information, see the Global Shipping Program, Fuel Shut Off Solenoid Valve for Kubota Zero Turn Mower Models ZD18 ZD21 12V. Return the throttle to idle, then half throttle, and attempt to restart the engine. Why would it not shut off? Has anyone else had this problem? Feb 11, 2013 / Kubota ZD21 right gearbox failed. Kubota ZD21 60" safety switch issue? | Lawn Care Forum The only thing the combination box could do would be to apply power for a long time, far longer than the designed 10 seconds. Look for a pinched or broken wire. Online reviews of the Kubota ZD221 can be helpful to decide whether to buy one or how to handle any difficulties. In order to pull the spring holding the fuel plunger closed, both wires are energized. To check the fuel pump for blocks, youll need to bleed the injector pump by disconnecting one of the lines from the pump. If you reside in an EU member state besides UK, import VAT on this purchase is not recoverable. You will need to check for fuel and/or airflow issues by checking the fuel filter, pump, and lines, as well as the air lines and air filters. I was worried that if the combination box has an issue that it might fry the solenoid again. Kubota ZD21 60" safety switch issue? - Lawn Care Forum Start with the basics? New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). If fuel begins to pour out, you know that there was a clog somewhere either in the line itself or potentially in the screen of the fuel pump. One thing that I had wrong is it doesn't seem to send power to the solenoid by just turning the key on and off without starting the engine. I received the solenoid today and after installing it, everything is working normal again. Clean the mower deck and pulleys from any debris or clogged grass. Fix:Fill with fresh fuel. The symptom is the solenoid has a weak click and the starter doesn't engage. Try disconnecting the wires and see if the tractor still shuts off. Turn off the fuel flow using the fuel shut-off valve located at the bottom of your fuel tank. I engaged the parking brake and reset the steering arms to the outer positions, re-inserted the key, released the parking brake and stood up. I've had trouble getting it started since I brought it home. JavaScript is disabled. If you are unsure about yours, the Kubota website has walk-through videos based on your tractors model. JavaScript is disabled. Rowland Heights, California, United States. Now if that wire from the control module is less than 12volts or less than the battery voltage, then you have a safety switch not working or the module thinks that. One member explains that a 23HP diesel is equivalent in power to a 30HP gas. The other, the hold comes from the controller. Always consult equipment operator's manual and follow safety instructions before operating or servicing any tractor or equipment, or attempting any task. On my machine the fuel shut off only cycles when you turn the mower off. If the d21 is like the zd326, you have a little box that has 12volt in and should have 12volt out and each safety circuit that does not work will lower the voltage.
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