yard force lawn mower won't start

It may be more cost-effective to replace your recoil. If the blade is removed, it will be difficult to start the engine because of insufficient spin momentum when you pull the starter cord. Fractured piston rings can allow lots of oil to get into the cylinder. Usually there's a label to remind you to do this before starting! https://creativecommons.org/licenses/by-sa/2.0/, Original uncaptioned image - Charles and Hudson, CC by SA 4.0 via Flickr, It's summer again, you drag the mower out of storage and of course it refuses to start up. It is possible to clean some of the dust from a paper filter by blowing from the inside with compressed air. Yard Machines Lawn mower won't start - Repair Clinic Eugene Brennan (author) from Ireland on May 18, 2016: Hi Amanda. Your carburetor must be drawing fuel in through an alternative route. The float and bowl work like a toilet cistern, keeping the fuel at a constant level so that it can be sucked up into the carburetor. This may be due to old gasoline; a dirty carburetor; a clogged fuel line; a bad fuel pump, spark plug, switch, or battery; a plugged air filter or fuel filter; or a faulty ignition coil or starter solenoid. The second cause is a blocked valve preventing fuel from flowing into the bowl, so you need to clear this out. Specifications: Power: 120v DC Brushless Motor Battery: 120vRX Lithium-Ion Battery Capacity: 2.5 Ah / 300 Wh Charger: 4 Amp Fast Charge Deck: 22" Steel Cutting Height: Single-lever / 7 positions Wheels: 8" Front / 12" Rear Grass Bag: 18.5 Gallon Hybrid with full indicator Drive: Self-propelled speed adjust up to 2.5 MPH Where to Buy (like trying to empty a bottle or barrel which isn't vented). If the mixture is too rich, symptoms are black smoke and a smell of unburnt gas. If there doesn't appear to be any problem with fuel flowing into the bowl, the fault could be a clogged main fuel jet. The color of smoke from the exhaust is a tell-tale symptom of problems with an engine. Wet grass clippings stick to the underside of the deck along with mud and other grime. Oil can leak out through the breather if the engine is turned on its side with the breather facing downwards and the blade is turned. Disconnect the spark plug wire and keep away from the spark plug. Here's a list of things you can do to make a plug work better. The valves and pushrods move freely when pressed manually. If the engine has a primer, check that fuel is getting up into the carb if you press it a lot. Do you think you definitely have the proper part? Recommended Yard Force Mowers | Gas-Powered Mowers - Briggs & Stratton Mesh fuel filters cover the ends of the tubes that suck fuel from the tank to the chamber and chamber/reservoir to the carburetor venturi, and these can become coated with dirt, restricting the flow of fuel. Solution:Test your battery with a multimeter. Install the air filter and attach the cover. I would start with the plug and check whether there is continuity between the hot/live pin and where the power enters the motor. In this case you will have to remove the float bowl as described below, and drain the contents of the bowl plus whatever remains in the fuel tank. Undo the screws holding the carburetor to the the tank. Clean out the cup, any extra oil or gunk you find in that part, and use a sewing needle or other tiny tool to thoroughly clean out the little holes in the bolt. Question: My Husqvarna, which has only been used once or twice, has a 6.25 hp Briggs and Stratton engine. You ran over something that got tangled in the blade. You would need to put your thumb over the plug hole while an assistant pulls the cord. The most important thing however is to check oil level and ensure it's within limits. Prise off the plate covering the ratchet mechanism. Consider draining old fuel and refilling the tank with new gasoline. A damaged spark plug that has a broke porcelain insulator or burnt electrode must be replaced as well. Did you try loosening the cap of the fuel tank and starting in case the tank isn't venting? It has no idle control, is in new condition, and is kept in the garage. Copyright 2023 Briggs & Stratton. After use in these conditions, wash the underside of the deck with a hose, but try not to get any water up onto the engine and air filter. #8 Check that the carburetor is tightly screwed or bolted to the engine. With the air filter removed and using a torch, you can determine the position of the throttle and choke valves. Eugene Brennan (author) from Ireland on May 22, 2018: Well, I would be the same as you and wouldn't like giving up on a problem. An example of data being processed may be a unique identifier stored in a cookie. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Alternatively, clamp off the fuel line with a vice-grips, or something similar (this mightn't totally cut off flow). Checkout the link that explains it. "It's like a hayfield," said John Godin, one of Fredericton's veteran lawn mower repair guys. If it has a float bowl type carburetor, check it's filling ok and that the inlet valve shuts off. (don't forget to remove lead and/or plug before turning). You can also use non-disposable, woven "mechanic's" gloves that have nitrile on the fingers and palms. You can get a rough idea of compression by sticking your thumb over the hole into which the plug screws and pulling the starter cord or turning the flywheel if this is easier. The Arena Media Brands, LLC and respective content providers to this website may receive compensation for some links to products and services on this website. To determine if the spark plug is defective, use a spark plug tester. The problem is that during compresion stroke, even in slow manual movment, the intake valve is not fully closed. Could be something in the ignition module breaking down when it gets hot. Pour a teaspoon of motor oil onto the foam and massage it evenly through the element (the function of the oil is to catch dust passing through the foam). Loosen and remove the bowl nut (which looks like a bolt, don't ask me why its called a nut!) Its a weed eater brand 158cc I would appreciate any feedback. (This also applies to starter motor solenoids.) Unfortunately, these are the smaller parts that get dirty the quickest. Hello and thank you for you thoughts Eugene. Points in an engine are basically a switch which opens when the current through the coil of the spark generating device (the ignition coil or magneto) is at its maximum. Press it in fully and then release it slowly. You can clean the balls with fine wire wool add a squirt of light machine oil to the compartment which houses the balls when replacing them. Well, so far it doesn't (caveat emptor). There are Welch plates on some carburetors which can be removed (they cover holes/passageways which were drilled in the carburetor during manufacture which couldn't be created in the cast). This is caused by oil being burnt in the engine. Attempt to start the engine using the pull cord or electric start. rev2023.6.2.43474. Eugene Brennan (author) from Ireland on May 17, 2016: Hi Veronica! Yet, another cause is an over-filled sump. I've checked the fuel line which is fine and the carb bowl fills with fuel. An integrated EMI preventing resistor inside the plug could also get shorted out. Spark plug was like new, but no spark. Have plenty of fuel running through ,no jets blocked,needle & seat ok. No primer fitted , fuel bowl clean. Replace the dipstick (usually, the level is checked with the dipstick replaced, but not screwed in, but check the manual or ask you dealer which way it should be done). TYPICAL! However, you did leave out one of the three major requirements for an engine to run; compression. Battery voltage should be at least 12 volts and over 13 volts when the mower is running and the battery is charging. Connect one probe or a crocodile clip to the capacitor. Can I trust my bikes frame after I was hit by a car if there's no visible cracking? What do I do? On a push mower and other engines without a battery (such as chainsaws, trimmers, and motorbikes without batteries), a device called a magneto is used to generate the high voltage spark. The parking brake is engaged or the bail lever is engaged. I would never have thought of that in a million years! Eugene Brennan (author) from Ireland on July 31, 2019: It's possible that the gasket isn't sealing properly or bit's of rubber have got into the carburetor and blocked something. The only solution is a replacement part. Large collection bag: 12-gallon bag for maximum collection and quick emptying. If the porcelain insulator is cracked, an electrode is burned away or damaged, or there is heavy carbon buildup at the electrode, replace the spark plug. You can check for holes by holding it up against a bright light or the sun. I was told it had been in storage for two years (looked like new, guess that sucked me in), and that the charger for the electric start had been lost. If you overdo it with the file, you'll end up removing the coating. Anyway, here's another video for changing a diaphragm: https://www.youtube.com/watch?v=C5nzigcNTwo&fe Great article but I'm still puzzled. The breather is sometimes connected to the carburetor through a tube so that any droplets of oil which manage to get through the valve, and unburned gases are sucked into the engine and burnt. Never run your mower without an air filter even if its only for a short period of time while you source a new filter. I have a BriggsStratton Engine Model # 11P902-0127-B1 on a Lowes brand pressure washer. Is it definitely oil? Make sure the cables are connected/disconnected with the charger unplugged to avoid sparks. Sharpen the blade a few times during the season, again depending on usage. How does it twist off? Generally, these type of engines are single cylinder and four-stroke (four cycle) and run on gasoline or "gas", which is known as petrol outside of North America. There is an adjustment screw for the Air/fuel ratio, but I have been hesitant to mess with this as it comes pre-set based on the reviews from Amazon where I purchased the new Carb. Thanks again. Once the filter is dry or if you are using a new foam filter, add a foam filter oil to lightly saturate the filter. What could be causing my lawn mower to surge? I took off the pull start mechanism as my arm was getting tired and used a 24mm socket on the flywheel nut and my battery drill set on the low spin setting (450rpm) to turn over the engine. Lawn Mower Won't Start. How to fix it in minutes, for free. The safety switch is designed to kill the engine when the operator is no longer present. Bad battery or loose & dirty terminals (electric start), A dead battery, loose cables, or corroded terminals can cause starting problems. My electric lawn mower won't start after getting grass blocking the blade, Assembling a lawn mower for the first time. Parts of the diaphragm and carburetor. Solution:You can temporarily bypass the safety switch to identify a bad switch. So connecting rod/crankshaft gets hot and seizes, stalling the engine when it runs for even a short period. Maybe a fault in this device could be loading the engine, acting as a brake and stalling it. Small engines, such as those on lawn mowers, usually have an aluminum flywheel, and the added weight of the blade actually forms part of the flywheel system. Do you have any thoughts? Follow all safety precautions listed in the owner's manual for your Yard Machines lawn mower to avoid injury. You could try looking into carburetor before starting to see if this is happening. It's easy to get a lawn mower wet at some point. Garden hose Wire brush Pry bar Before You Begin Before starting up the mower, take a moment to walk your yard and clear it of any sticks, toys, and other obstacles that could damage your. Also ethanol in fuel attracts moisture that can be detrimental to carburetors and steel fuel tanks, causing corrosion over time and requiring a carburetor re-build. Larger engines with an electrical system sometimes have a low oil level float switch. The mower has been used maybe 4 times. O-rings and gaskets can shrink, crack, and lose their elasticity over time. Yard Force 120vRX Cordless 22" Self-Propelled 3-in-1 Mower Review Blade Speed Selector allows you to choose 3200 RPM or 3000 RPM depending on grass length and conditions. Water in the gas tank can cause an engine to splutter and stall. A rubber oil seal is fitted at the exit point of the crankshaft from the sump, and at the top of the engine block. You will need to remove the cowling on top of the engine to get at this brake. Which means that when I tried to pull it with the starting ripcord it's very difficult and it never gets going fast enough to even try to start, so there is something physical going on inside. Lawn Mower Won't Start? Try One of These 9 Quick Fixes - Bob Vila Change engine oil. Also the one-way reed valves (which are just flaps forming part of the diaphragm) can become stuck to the surfaces of the tank/carburetor due to gum deposits if fuel is left lying in the tank over winter. This sounds like there's an issue with one of the valves. Connect the other probe to the rocker arm. What do you think about it? Nitrile rubber gloves are the most resistant to these chemicals. Troubleshooting books and guides often advise checking whether fuel is actually reaching the engine by removing and examining the spark plug after several pulls of the starter cord. The points gap is set either by releasing a screw and moving the capacitor, or turning a screw. You may find your mower uses an inline fuel filter placed between the fuel lines. Solution: Clean the Spark Plug or Change It. I have test run the engine in the past without air filter fitted and it ran ok without it. The linkages are also working okay - the choke activates in the choke position and the throttle link is moving back and forth. I installed the valve inline next to the tank, then the filter, then the new carburetor and gasket kit. During winter time I focused on the issue, and found out, the compresion was very low, arround 3 bars. Last year, I tested and reviewed the Yard Force 120vRX Lithium-Ion Battery Leaf Blower as well as the Yard Force 8000 13 Amp Electric Leaf Shredder. Dirt in the engine can cause significant engine damage. Hang tight - you're in the right place Due to heavy site traffic, you've landed in our waiting room. This page will automatically update as soon as space permits. To protect the motor this key way shears. This is the scenario on small Briggs and Stratton engines. On an OHV engine, removing the cover exposes the valves, push rods and rocker arm. (A faulty breather valve can cause excess oil consumption.) YF20-RTT Engine CR950 Manual. I've tried pulling the carb off and cleaning it (as per various youtube videos) which has not worked. 10 Top Troubleshooting Tips for Small Engines, String Trimmer Won't Work: 2-Stroke Engine and Carburetor Troubleshooting, How to Use a Digital Multimeter (DMM) to Measure Voltage, Current, and Resistance, https://photos.app.goo.gl/movCzwkpx4EQ98wo9. What maths knowledge is required for a lab-based (molecular and cell biology) PhD? The spark plug lead and connector should be clean and in good condition. Some engines have OHV or overhead valves, and again access is possible by removing an access cover. YF7302 Edger Manual. This is a square or offset cast piece that sets the timing of the magneto with the needed spark. I'm not a stranger to Yard Force products. Make sure it's securely attached. However, this may be beyond the ability of the amateur. Instead, youll hear the motor turn a couple of revolutions and then stop. Your mower uses a carburetor to regulate the amount of gas mixed with air allowed into the cylinder to form combustion. Cleaning your carburetor is one of the best low-cost maintenance tricks for lawn mower troubleshooting. Bowl nut from a lawn mower: Check the orifices are free of dirt. Possibly this vent/passageway is filled with oil. If the filter is paper and soaked in oil, it should be replaced. Finally, set the screw midway between the two stall positions. Basically you need to use a continuity checker to trace the wiring and make sure power is getting to the motor. (362) $100 off with Instant Savings. Yard and Garage is owned and operated by Redland Media. Test the starter solenoid and replace it if bad. Briggs and Stratton Engine. If you have to store fuel, use a fuel stabiliser such as, Alternatively, use a non-ethanol alkylate fuel such as. Battery voltage should be at least 12 volts and typically 14 volts when the mower is running and the battery is being charged by the alternator/dynamo. Lightly tap the flywheel all round the perimeter to release it. Once you confirm you have a good connection, continue testing the battery. Unfortunately these plates have to be replaced after removal. Or it starts once, then refuses to start again. Should convert 'k' and 't' sounds to 'g' and 'd' sounds when they follow 's' in a word for pronunciation? This clogs the pathway to the collection bag and eventually the engine can struggle while cutting. Andrew, have you tried removing the fuel line from the carburetor to check whether fuel flows freely? Starting procedures vary depending on the type of lawn mower you are using. These type of filters, however, should ideally be replaced. 8 Reasons Your Ferris Zero Turn Mower Wont Move Forward or Reverse. When the current reaches a peak, a set of switch contacts called points opens, interrupting the current. 4 stroke engine cycle. Add fuel stabilizer to the tank. - It's always best the keep the carburetor high side up when tipping mower on its side so that it doesn't get choked with oil. Solution:Remove your spark plug and inspect it for signs of carbon buildup or cracked porcelain insulators. They are closed and yet move freely when I press them. The recoil can break and you are no longer able to start your mower. Make sure the filters on the end of the tubes aren't clogged. Detach the air filter cover and remove the air filter. Float bowl held on by bowl nut (which looks like a bolt when removed). 21" cordless lawn mower 3-in-1 self propelled (19 pages) . What I found during diferent tests, is that if ther is no carburator, and I start engine suppling it with fuel by manual jet, I can see that te fuel is blowed out back via intake manifold. I took the carburetor off, and cleaned it and put it back on with new gaskets, drained the fuel, took of the tank and cleaned it. The experts on Lawnmowerforum reckon there's lots of different types and a mower may not run properly if it doesn't have the proper coil. Clean the spark plug, check its connections, or replace it; check the ignition system. Also, check for dirt or debris in the starter gear shaft and apply some lithium-based grease to the shaft. This post did not address my problem (how to troubleshoot a fuel pump and fuel shut off solenoid, Kohler Courage). Check for hairline cracks in the porcelain plug insulation. Eugene Brennan (author) from Ireland on May 17, 2018: Hmm, seems like you're doing everything right. A lawn mower solenoid on your lawn mower is an electromagnetic switch that is like an on-off switch that actuates the starter motor to turn over the engine. This can cause difficult starting. Dirty contact points can prevent a spark occurring at the plug. How is compression? I ordered a new magneto and replaced it. Remove one of the connections to the switch when checking. Hello Eugene thank you for the article, it is very informative. Fuel that has been sitting for long periods of time can also go bad. Eugene Brennan (author) from Ireland on June 01, 2020: Check your float bowl and jets again. Darn penny pinchers, I shall substitute a much stronger one." I have changed a spark plug, oil and new petrol but it still wont start. On a side valve (flat block or l-block) engine, there is usually a plate which can be removed which exposes the valves. The complete four-stroke process is repeated about twenty times per second when the engine is running full throttle. This is a review, and instruction on how to operate and use the Yard Force 22\" Gas Powered 3 in 1 mower. An ignition switch that hums when turning the key indicates you may have a problem with the starter solenoid causing a starting problem. Usually a plug will either end up with worn electrodes or possibly an internal crack in the plug can cause the electricity to take a short cut inside the plug. based on my knowledge it is not OK, but I can't imagine that cam shaft is getting bigger during running????? RIDING LAWN MOWERS | yardforceusa YF60vRX Work Light. Insert the flexible straw of the aerosol into the jet and use a few puffs to clear any debris. The other scenario is that the blade stopped and the crankshaft kept turning, shearing the key at the bottom of the shaft or destroying the inside of the blade carrier. It is important to regularly check the air filter and keep it clean. If it fills slowly, the mower cuts out, but can often be re-started after it's been left for a while (because the bowl re-fills).Another problem is that the needle doesn't adequately seal and stop inflow of fuel into the bowl when it becomes full. What do you think? I put the air filter back on and after several attempts it coughed and spluttered and backfired for about 3 seconds before stopping again. Excess oil gets up into the cylinder and is burned. Engine starts runs great for 15 seconds then just stops. The alcohol is added for environmental reasons to reduce CO2 emissions. If your filter has dark spots or is dry and brittle, replace the filter with a new one. As a safety note of precaution, always unplug the mower before doing any cleaning. YF20-RTT Tiller Manual. Eugene Brennan (author) from Ireland on September 04, 2017: I don't think I've ever seen anything coming out the spark plug hole, but that's probably because it was on the opposite side to the starter cord.
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