Lawn mower keeps shutting off

May 20, 2016 ... ... KEEP IN MIND when you are watching my videos: I am showing you the least expensive, quickest "backyard" methods for repairing or servicing ...

Lawn mower keeps shutting off. 10,047. Sep 11, 2020 / Kohler back-firing on shut down. #2. Kohler recommends that their engines be shut off at full throttle. It has to do with the fact on the Kohler engines the fuel shutoff solenoid only blocks the high speed jet but still allows the low speed jet to draw fuel. That fuel is being passed through the engine since there is no ...

Lawn Royalty. Joined Nov 29, 2014 Threads 64 Messages 24,705. Jul 13, 2017 / Engine starts fine, but stalls out when put in gear or engage blades - Suggestions ... As your mower stops when you dissengage the brakes or turn the blades on, the common item to both is the seat switch.

It keeps cutting itself off, after a few seconds of operation. this has been getting progressively worse since I got the mower 3 months ago. Today I am having trouble getting it to start at all. The battery is fully charged. RY40108. Contractor's Assistant: Do you have fuel in the tank? If so, is the shut-off valve open and the fuel clean?A Kubota lawn mower will start then die from old fuel, a plugged fuel filter, clogged fuel lines, a dirty carburetor, a plugged air filter, a bad fuel cap, a bad spark plug, a faulty ignition coil, a plugged mower deck or insufficient engine oil level. Always take safety precautions as outlined in your operators manual including:01 - Craftsman Lawn Mower Carburetor. The carburetor might be clogged. A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and cause the ...I do for most part agree with Ryan's answer. Clean the Carb, fuel line, and definitely the fuel tank. Replace the fuel with clean fuel. Also, you might develop a vapor lock. Your gas cap should be vented. If it is not, you create a vacuum inside the tank which will prohibit the fuel to leave the tank. Also check the float and the needle valve ...I actually have a 2nd one of these as well that works fine. The issue with the one is that after about 25-30 minutes of mowing the blade motor will stop spinning, it will keep self propelling at this time. The mower will start back up and run for a short time and stop again like it is overheating, i change the battery and the same issue, even ...Aug 3, 2020 / Z3X PTO randomly shutting off. #1. Hi everyone. I just purchased a Ferris Z3X about 6 weeks ago. Love this mower, however I'm having one annoying problem. For some reason the PTO keeps randomly shutting off while I"m mowing. I know the blades will shut off if you step off the operator platform, however this is not the issue.If you aren't getting fuel flow, shut off the mower and shut off the fuel valve. Make sure you don't have any blockages in the fuel line to the carburetor. If nothing is plugged it's time to replace the fuel pump. 7. Dirty Carburetor. A dirty mower carburetor can be the cause of your mower not running.

Ryobi 40 V self-propelled brushless mower keeps shutting off quick easy fixCommon Reasons Why a Lawn Mower Stalls When Cutting Grass. 1. Being Overworked. One of the most common reasons that a lawn mower might stall while it is cutting grass is that it is being overworked. This is a mechanism that is intentionally incorporated into the mower to prevent the motor from being blown. 2.Why Does My Lawn Mower Keep Shutting Off? When a lawn mower engine cuts out intermittently, the problem is usually an exposed earth wire running from the ignition switch to the ignition coil. When the naked wire touches the mower body, it acts as a kill switch and cuts the voltage from the ignition switch to the ignition coil.An electric leaf blower may keep shutting off due to battery issues, an overheating motor, or a blown fuse. Inspecting the leaf blower is a good way to figure out how to get the leaf blower working again. Maintaining an electric leaf blower can help prevent mechanical issues. If you've got a leaf blower that keeps shutting off, the problem ...1. Bad, Old, or Wrong Fuel. Running good fresh fuel through your riding mower is best. Gasoline can begin to break down and become less effective as soon as 30 days after purchase. Ethanol in your gasoline …

Spark Plugs. If your lawnmower starts up but then dies in the middle of mowing your lawn, you could have a bad spark plug. The spark plug works with the ignition coil to create a timed spark in the cylinder, causing combustion. The spark plug is really a very simple device. It has an electrode that passes through a ceramic insulator.Contents. 1 Diagnose the lawnmower shuts off when blades are engaged:. 1.1 Step 1: Check the blades of the lawnmower; 1.2 Step 2: Check and clean the carburetor; 1.3 Step 3: Clean the air filter; 1.4 Step 4. Examine the spark plug of the lawnmower; 1.5 Step 5. Check the level and quality of the engine oil; 2 Precautionary Measures:; 3 Frequently Asked …A push mower may start and then die due to a lack of fuel, air, or spark due to plugged filters, bad fuel, a dirty carburetor, a clogged fuel system, a bad spark plug, or a faulty ignition coil. An insufficient engine oil level and plugged mower deck can also cause a mower to die. I have put together a list of causes that can be the reason your ...Problem #5 - The Smoking Doesn't Go Away After Running It. If your lawn mower still emits smoke after running it for ten minutes, it may be a sign of a bigger problem. Smoke is often a sign that your machine is "running rich," meaning the air-to-fuel ratio is off in your machine. SOLUTION.Most diesels shut off the fuel. There should be a shut off solenoid on the fuel pump. Sounds like yours could be sticking. Maybe try tapping on the pump close to where the wires are with a rubber hammer. You can shut it off by choking off the air but that won't fix your problem. Feb 20, 2017 / Turn the key off...motor keeps running #3.I have a Ryobi 40v 18in 2in 1 cordless mower. I purchased it before my old mower died. So I hadn't tried it. My old mower died but when I tried to charge the battery it didn't hold a charge. Please ad … read more

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Easy fixes include charging the battery, cleaning the mower, and adjusting the mowing height. Understanding why your electric lawn mower keeps dying is the first step to fixing the problem. Once you know the root cause, you can take the necessary steps to get your mower running smoothly again. Read on as I go over the most common reasons behind ...Turn off the fuel supply using the fuel shut-off valve (if equipped) or pinch the hose. Remove the hose clamps holding on the filter. Remove the fuel filter. Install a new filter between the fuel lines and secure it with the hose clamps. Turn on the fuel supply. Change a fuel filter at the bottom of the fuel tank: Drain the fuel tank.Aug 1, 2022 / Kobalt brushless electric mower shuts off when I let go of self-propel handles. #1. I bought a Kobalt brushless electric mower from Lowes 4 months ago and I'm having an issue. There are area in my yard where I need to release the self-propel handle so I can manually push the mower. When I attempt to manually push, the mower shuts off.T. turklilley Discussion starter. 1 post · Joined 2018. #1 · Aug 1, 2018. My X540 just shuts off. Usually after it is mowing and warmed up. I have replaced the 2 coils, cleaned the flywheel, set the coil air gap to .012, changed fuel filter and checked fuel flow. It will restart after cooling down some.In this video I demo how to quickly check if you have fuel issue and how to check the fuel pump and fuel shut solenoid. If your mower engine does not turn ov...

11 Reasons for Lawn Mower Startup and Running Problems. 11.1 • Reason 1: Defective Coil; ... In general, check the gas before starting your mower to see if the gas level is enough for the mower to keep running. If the gas level is too low, the mower will start all right but stop running some minutes later. ... fuel shut-off valve, air filter ...To emergency stop a push mower that will not turn off, remove the spark plug boot with a set of insulated pliers or channel locks. To fix the issue, clean the connection between the brake assembly and the kill switch and ensure that contact is being made when the bail arm is released. Problem. Step 1. Step 2. Step 3. Push Mower Will NOT Turn Off.Yes, a fuel shut-off valve can help prevent fuel leaks and spills when the mower is not in use. By turning off the valve, you can stop the flow of fuel, reducing the risk of leaks and spills. Are There Any Safety Considerations or Precautions to Keep in Mind When Using a Fuel Shut-Off Valve on a Mower? When using a fuel shut-off valve on a ...Remember to turn the fuel valve off after mowing. This keeps you safe and expands the mower's life. Also, don't leave fuel in the mower for long. This could harm the carburetor. Clean and inspect the mower regularly. Pro Tip: When switching off the engine, let it run out of gas instead of shutting off the fuel petcock. This stops gummy ...Identifying a Lawn Mower Engine Popping Sound and Possible Fixes. Hearing a lawn mower engine popping sound can be startling. That noise indicates that your lawn mower is backfiring, just as similar popping sounds can signal that a car engine is backfiring. When you hear that sound, it's important to get to the root of the problem immediately ...The oil acts as the lubricant that keeps all internal engine parts operating smoothly. When it runs low, there is more friction when these parts are operating, which generates additional heat. Sometimes enough for your lawn mower to overheat and shut down. Solution: Check the oil level in your mower right away.I usually reserve that battery for the hedge trimmer or weed whacker--using it with the mower is just an exercise in frustration. Return the battery if you can. Wait 30 min after use to charge batteries or change blade height. I had no problem with the mower a week ago, but my dad tried to mow the front lawn and it was stopping every few minutes. Reasons Your Craftsman Lawn Mower Starts Then Dies. Your Craftsman Lawn Mower may start and then die when your lawn mower is unable to regulate the air-to-fuel mixture required by the engine to form combustion. This could be due to a dirty carburetor, bad fuel, plugged air filter, broken fuel pump, plugged fins, or other components that can ...

Remember to turn the fuel valve off after mowing. This keeps you safe and expands the mower's life. Also, don't leave fuel in the mower for long. This could harm the carburetor. Clean and inspect the mower regularly. Pro Tip: When switching off the engine, let it run out of gas instead of shutting off the fuel petcock. This stops gummy ...

Jun 22, 2023 · If your belt has been coming off frequently or worse yet, your lawn mower belt keeps breaking, this is a pretty clear indicator that something is wrong, and the pulleys need to be checked out. Solution: Shut your riding mower off completely and raise the deck or disconnect it and remove it. You need to be able to get at the pulleys to test them. I’m happy with all my Milwaukee tools but for lawn care I have gone with ego and I have no regrets. Hell my 21” push mower that I used at home and at our properties fell off my truck one time rolled down into the side of the stream (managed not to get wet) and the only thing that broke was the plastic guard where the handle attaches to the main body of the mower.345. Aug 11, 2017 / Blades keep spinning. #1. I have a Troybilt 12AT609G766, that when I disengaged the deck belt, the blades continue spinning. The belt is loose. So loose, that I can (after shutting it off) can take it off any pulley without much effort. The belt itself, is a little worn, but not too bad, as it cuts great, when it's mowing.So there are a lot of complaints about this lawnmower overheating batteries and not lasting long on a charge. All of those complaints are true, but have work...So, if your John Deere Tractor keeps shutting off, here are the common reasons likely to be responsible. 1. A Clogged Mower Deck. The mower deck houses the blades responsible for cutting grass. After working for a while, accumulated grass can clog the deck, especially if you are cutting wet grass. This mass of debris affects the quality of cuts ...I am on my 2nd lawn mower 3.0. The first one turned on by itself randomly (haunted). Manscaped promptly exchanged with a new one. Thank you! Now i'm on my second one. And one month into the second one, guess what ... it also turns on by itself. It's the most frustrating thing. I will not return this one. I will just look for a different brand.8. Dec 1, 2013 / Bad boy shuts off when PTO engages. #7. Ok, here is where we are at. 1. jumper wire for the seat switch did not work. 2. ran wires from the clutch switch to the battery and nothing happened. Blades did not turn on. What did happen is that the the wire did begin to melt to the battery terminals.It is possible that you are getting a vapor lock. The fuel evaporates when the fuel lines get to hot. Make sure that you route them away from the engine block etc. Also reevaluate your ignition system, make sure that it does not get to hot. Take a look at your spark plug and see if it burns the fuel okay. Lsst thing I can think off is make sure ...if you have a briggs and Stratton engine on a lawn mower that rattles when shutting down or squeals when running this might be the source of that noise. It ...

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During use, push mowers will generally make a popping sound or backfire when they decelerate engine speed when going from thick or wet grass to thin grass. This is normal. However, if the backfire is continuous it could be due to stale fuel, clogged carburetor jets, a dirty air filter, or valve and timing issues.Keep Your lawn Tractor Running When You Step Off!Does it drive you crazy having to start your lawn tractor every time you have to get off of it to do a simpl... 04 - Old or Bad Gasoline. The carburetor might be clogged. A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and cause the engine to stall. This type of oil varies from the oil used in cars. A car uses water in a liquid to cool the engine while a riding lawn mower uses air to cool its small engine. Most lawn mower small engine manufacturers recommend using SAE30 or 10W-30 engine oil. You may need to change your oil viscosity to 20W-50 when operating in higher ambient temperatures.txgrassguy. Remember that air cooled engines actually heat up a bit at idle and this may be a cause for the back firing. Unburnt fuel is ignited from the heat in the cylinder which can cause the back firing. The idea behind shutting a motor off at full throttle is the unburnt fuel is dumped into the cylinder actually cooling it down somewhat.Use carburetor cleaner and a small brush to remove any clogs or build-up inside the carburetor. Once clean, reassemble the carburetor and reinstall it on the engine. This should help improve fuel flow and prevent your lawn mower from turning off while cutting grass.Mar 20, 2016 / Engine turning over in key off position. #1. I have a Briggs & Stratton 20HP engine in a MTD Huskee brand mower. The battery was dead so I was charging it. I attempted to start it after a couple of hours but it still wasn't charged enough and turned over very slow. I turned the key to the "off" position but the engine continued ...The mower dies. There are several common and easily fixed reasons why a mower might die including bad fuel, loss of air flow to the engine or carburetor issues. When the blades on a lawn mower come under full load, such as when cutting thick or tall grasses, the carburetor responds by increasing the amount of fuel flowing into the cylinder ... ….

If the mower is shutting down during use, this is most likely being caused by mower overload. Your self drive has built-in overload circuit protection. If your mower self drive shuts off, release the bail handle, wait at least 10 seconds and try again. If you are cutting tall grass, slow the self drive to the lowest speed position. To prevent ...To do this, remove the outflow fuel line from the fuel pump and turn over the engine. There should be an unimpeded flow of fuel that flows with consistency. If the flow is random or slow, you could have found the cause of why your lawn mower sputters but runs. Just be sure to have a container to catch the gas.Lawn Pro. Joined Jul 15, 2013 Threads 175 Messages 7,416. Jul 24, 2015 / Toro ... What grade of octane gas are you using? to eliminate future problems, keep gas tank full after letting engine cool down. next time tank runs low on fuel, remove fuel line at bottom of fuel tank and check fuel strainer in gas line for being partially stopped up ...Problem #5 - The Smoking Doesn't Go Away After Running It. If your lawn mower still emits smoke after running it for ten minutes, it may be a sign of a bigger problem. Smoke is often a sign that your machine is "running rich," meaning the air-to-fuel ratio is off in your machine. SOLUTION. A Husqvarna lawn mower will not stay running when there is a lack of air, fuel, or spark. A plugged air filter, bad fuel, water in the fuel tank, a bad spark plug, and a faulty ignition coil can cause the mower to stop running. Keep reading for a complete list. Take safety precautions when working with your Husqvarna mower as outlined in your ... Does your lawn mower have an auto choke system that doesn't run smoothly? This is a Honda Power Equipment technical service update bulletin. The symptom is ...Aug 3, 2010 · When the coil cools off, it will start again, then when it is hot again, it will shut off. Spray carburetor cleaner in the carburetor. Old or Bad Gasoline. The carburetor might be clogged. A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. 6. Apr 3, 2020 / Craftsman starts then shuts off. #1. Hey all, Sears Craftsman mower has been running great for years and I treat it well. I was mowing fine then the motor turned off. Each time I try to start, it turns over fine runs for 2 to 3 seconds then shuts off. Figured a fuel issue so I pulled the carburetor, disassembled it, carefully ...I have a 20 in. 40v cordless Greenworks mower model #M040L00 that has only been used for one full season. The other day, I almost finished my small front lawn and momentarily shut it off. Upon trying … read moreThe web page explains 12 possible causes of lawn mower stalls and shutoffs, such as old fuel, air filter, spark plug, choke, and more. It provides solutions for each cause and tips to prevent future problems. Learn how to diagnose and repair your lawn mower with this guide. Lawn mower keeps shutting off, A few fixes I have found for the Ryobi 40 volt mower shutting off all the time when mowing., I cleaned all the connections and started mowing my lawn with it. Sure enough, after about a round and a half the PTO cut out. I checked the voltage at the last connector before the PTO clutch and I got nothing. I flipped the switch on and off, and I had 15 volts. I'm suspecting a bad switch., Having a clogged fuel line can also result in a lawn mower shutting down due to fuel getting backed up. When the fuel line becomes clogged with debris, it can block the flow of fuel to the carburetor. This can cause the engine to stall and the engine to become inefficient. This may cause the engine to lose power., If your battery is flat, or overheated, that could be the problem. Let the battery cool down and charge it. If the battery is freshly charged and tests good in the charger, it's not the battery. But if the mower was working and stopped suddenly, this is a very common reason. Let the battery cool down and then charge it., I am on my 2nd lawn mower 3.0. The first one turned on by itself randomly (haunted). Manscaped promptly exchanged with a new one. Thank you! Now i'm on my second one. And one month into the second one, guess what ... it also turns on by itself. It's the most frustrating thing. I will not return this one. I will just look for a different brand., NJPagan Discussion starter. 42 posts · Joined 2013. #1 · Mar 13, 2021. Hi Guys... I have a Simplicity Regent 18HP riding mower that insists on shutting down whenever I engage the PTO to run up the blades. I can hear the electric clutch engage, that's about when the engine dies. I took out the reverse switch, lubricated it. Checked it with a ..., Got a 21" Ryobi self-powered mower, the Home Depot version RY401014US, worked for a month or so, now have the infamous Ryobi mower shutoff problem. Only goes a few feet before shutting off. Appears to related to the handle as on my previous Ryobi, but I can't see a way to fix on this mower. Any ideal on this would be highly appreciated! My good ..., 6. Mower keeps shutting off. When a mower shuts off unexpectedly, it can be frustrating. However, you can usually fix the problem yourself. It can be due to a clogged air filter. Clean the air filter to remove debris so the blades can properly spin. The trouble with the throttle lever. Make sure the lever is not stuck or damaged., Here are the most common reasons your Yard-Man lawn mower starts then stalls - and the parts & instructions to fix the problem yourself. We make fixing things easier! En español. 1-800-269-2609 24/7. Your Account. ... Join Repair Clinic's VIP email list for 10% off, plus other discounts and tips! Join Repair Clinic's VIP email list for 10% off, If your riding lawn mower keeps running in the off position, the key switch may have gone bad or the ground in the ignition coils may have a break in the wire. ... If you still cannot figure out why the riding lawn mower won't shut off with the key, visit our Locations page for a lawn mower repair shop near you. Share this: Twitter; Facebook ..., How troubleshoot and repair John Deere Mower , whose blades shut down for no appearant reason, fast, easy, and of all cost free repair, When it comes to maintaining a well-manicured lawn, having the right equipment is essential. Mowers and tractors are two of the most common tools used for lawn care, but they can o..., If your lawnmower makes loud bangs or pops on shutdown, afterfire may be the problem rather than a backfire. Backfires typically describe a bang or explosion while the engine is running or as it is shutting down. Afterfire happens after the engine has stopped. Neither is harmful or dangerous but do indicate something may be wrong., My Mower Engine Doesn't Shut Off Immediately. A lawn mower that keeps chugging on after you turn off the motor can be alarming or even dangerous if its blade keeps swinging as well. This tendency to run on, known as dieseling, can be accompanied by sputters but typically sounds like low, rolling thunder that slows until it comes to a stop in ..., The loud bang heard is the sound of this fuel igniting inside the muffler when the engine is shut off. Allowing the engine to idle from 30-60 seconds before turning the key to the OFF position will generally prevent this after fire condition. Engines equipped with an electronic fuel shutoff solenoid have an extra valve that shuts off the fuel ..., The job of replacing is simple and will solve the surge. The process is as follows: Remove the spark plug wire - prevents the mower from starting. Remove - Remove and clean the air filter and filter housing - Clean it using soapy water, and when dry, smear some engine oil over the surface of the foam., A push mower may not stay running due to a plugged fuel filter, clogged fuel line, dirty carburetor, plugged air filter, incorrect choke setting, bad spark plug, faulty ignition coil, bad gas cap, incorrect engine oil level, plugged mower deck, or old gas. Before performing repairs, follow the safety precautions found in the operator's manual., Ryobi 40v Lawn Mower Keeps Shutting Off. There are a few potential reasons why your Ryobi 40V self-propelled lawn mower might be turning off while you're using it: 1. The battery is low. If you use a cordless electric lawn mower, the battery may be low, causing the mower to turn off. Make sure the battery is fully charged before using the ..., 3. Jul 4, 2018 / Exmark Lazer Z S Series 60" Kawasaki Shutting Off Issues. #1. Hello, I have an Exmark Lazer Z S-Series 60" with Kawasaki engine. It has approximately 800hrs on it. I am having issues with the engine shutting off while cutting grass. It is very odd, intermittently shutting off. It has plenty of fuel, the fuel filter was recently ..., This type of oil varies from the oil used in cars. A car uses water in a liquid to cool the engine while a riding lawn mower uses air to cool its small engine. Most lawn mower small engine manufacturers recommend using SAE30 or 10W-30 engine oil. You may need to change your oil viscosity to 20W-50 when operating in higher ambient temperatures., A ryobi mower that keeps shutting off has multiple symptoms that indicate a faulty machine. Engine shutting off randomly could be due to poor quality fuel or loose hoses. Difficulty starting the mower could mean a dead battery or dirty air filter. Poor performance and reduced power could indicate a damaged spark plug or clogged carburetor., When it comes to mowers cutting off when put in gear, the most common culprit is a faulty seat switch. Even when you are in the seat ready to mow, the operator's presence seat switch detects no rider and immediately kills the engine. Start your inspection there if your mower dies in a similar way to that described above., Feb 17, 2016 / In-line fuel shut-off valve. #1. I'm a new member here. Bought a new 52-in. raptor last year and very happy with it so far. Last fall, I was prepping it for winter storage and had a gallon or two of gas in the tank. I'm thinking of installing an in-line fuel shut-off valve. My old mower (a Honda 3011 had one and all I did was add ..., The best kind of oil for your lawn mower is air-cooled engine oil that contains a high concentration of zinc. Zinc is used as a cooling agent. The cooling procedure differs from cars. Cars use liquid to cool their engines and small engines use air for cooling. Most lawn mower small engine manufacturers recommend using SAE30 or 10W-30 engine oil., Briggs and Stratton or Tecumseh, with bowl type carburetors, easy fix., So there are a lot of complaints about this lawnmower overheating batteries and not lasting long on a charge. All of those complaints are true, but have work..., If your Husqvarna lawn mower dies when you engage the blades, there are a few possible causes. First, check to make sure that the blade control lever is in the correct position. If it's not, the engine won't be able to maintain speed and will eventually stall. Second, check the condition of the spark plug. A fouled or damaged spark plug can ..., 3. Jul 4, 2018 / Exmark Lazer Z S Series 60" Kawasaki Shutting Off Issues. #1. Hello, I have an Exmark Lazer Z S-Series 60" with Kawasaki engine. It has approximately 800hrs on it. I am having issues with the engine shutting off while cutting grass. It is very odd, intermittently shutting off. It has plenty of fuel, the fuel filter was recently ..., An Ariens lawn mower may start and then die due to a fuel restriction caused by a dirty carburetor, plugged fuel filter, clogged fuel lines, or a bad fuel cap. A plugged air filter, insufficient oil level, and bad ignition coil can also cause your Ariens mower to start and then die. Keep reading for additional items that can cause a running ..., The mower will shut off when you release the bail switch (safety bar). To engage the self-propelled function on self-propelled models: With the mower started and the bail switch held against the handle, pull the self-propelled lever to the handle to engage the self-propelled feature. Use the knob to adjust the speed. 7. Handle is Not Set Correct, Your Husqvarna lawn mower starts and then dies when your mower is unable to regulate the air-to-fuel mixture required by the engine to form combustion. A dirty carburetor, bad fuel, plugged air filter, broken fuel pump, and plugged fins can cause your mower to shut off and die. Keep reading for a complete list of items that can cause your ..., Messages. 1,851. Apr 25, 2012 / Scag Turf Tiger misfiring/cutting off while mowing. #4. A few things to look at: Check all plugin connectors particularly the engine harness adapter connector as all battery power comes thru it. Just had to clean all the connectors on my 2008 Tiger Cub to include the connectors on the PTO switch and key switch., When a mower deck belt keeps coming off the mower, there are several reasons that could be the cause. One of the possible causes might be a damaged or worn belt, a stretched belt, a bent belt keeper or you could have a damaged pulley or pulley bracket. In addition, the belt might be damaged or worn. Before attempting to work with the components ...