Starting up a lawn mower should be easy, right? Check the dipstick. Oil level should be between the high and low marks on the dipstick, Use fresh gas. What can I check next? If you find that your mower is still not starting, there could be an issue with the carburettor. In rarer cases, the smoke may be a sign of a serious issue. Its 4 years old and I accidently left it in the rain last week. Take your lawn mower to an MTD service center . Low Fuel. Turn on choke if a manual choke fitted. Don't turn on the choke if the engine has been running in the last 5 minutes or so, Make sure primer bulb is pressed about 5 times (if fitted). Try starting the mower again, this time without any choke and until it runs, leave the air filter off. This will allow the mower to dry out. Follow step-by-step instruction to determine why your mower won't start: checking fuel levels, spark plug, carburetor and compression. ; Check the oil level as described below. My Lawn mower won't start? You may find the mower cuts out during use when the bag reaches capacity. If the mower runs out of gas during cutting, it will need to be primed again, Check the air filter isn't dirty. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. Bring this bar all the way down to the handle, and then try pulling the starter rope again. Just today. just bought a new ride on mower got it started ran for a few minutes,turned it of tried to re-start nothing no lights on or anything, Any ideas please. For an engine to startup, it basically requires two things: fuel and a spark. My cub cadet riding mower will not start. Mechanic's Assistant: Do you know the model of your Cadet lawn mower? The lawnmower may not start if the bag is detected as full by the lawnmower's system. I decided to let it sit until this spring when I’ve finally decided to try to fix it. Some newer push mowers have starter motors and batteries. Then remove the bowl (Photo 1). This pretty much acts like a toilet cistern, the reservoir keeping fuel at a constant level, irrespective of how much fuel is in the tank. I’ve replaced the battery and solenoid. Bad compression can also lead to difficult starting. Sometimes manufacturers recommend placing a mower on its side with the carburetor pointing upwards..... ......alternatively the mower can be placed back on its handles with a heavy weight such as a concrete block to keep it in place. Thank you!My gear: In some cases, it might be that your tank has old fuel. One reason is the engine flywheel brake is in place. Hold the plug threads against the engine block. Push the throttle all the way back, and all the way open. Remove the air filter housing and check whether this has happened. New mowers are also normally sold without engine oil (so it doesn't leak out if a boxed mower ends up upside down during transit) so you will more than likely have to add that also. Pull starting a mower on full choke more than 4 or 5 times may cause the engine to flood. Not sure how you'll remove excess fuel form the tank. Unscrew the gas cap and look inside the tank, if you can’t see any gasoline you need to fill up your tank! Cut grass is collected in the cuttings bag at the back of the mower as you move around the lawn. I'm out of my depth on ride on mowers and the charging systems/starter motors. One year old. The Lawnmower Will Not Start. Don't use old gasoline which can cause difficult starting. Clamp off the fuel line with a C-clamp. Here's my current problem: the last time the mower ran successfully was two weeks ago. I am trying to cover most of the most common issues you may run into:- Missing or bad fuel- Shutoff valve is closed-Air filter is clogged or dirty-Spark plug is bad or dirty-No spark-Not enough or too much oil-Carburetor is dirtyGood luck finding what is going on with your lawnmower.Please make a comment if this video was helpful or not! Lawn mower will only crank but not start and only when hooked up to cables. Hi everyone, I have a Craftsman limited edition vts riding mower that had continuously had problems. Husqvarna LC221A lawn mower will not start. 4) Dead battery Batteries typically last a long time, but there isn’t always a warning sign that it is going dead. The Honda Harmony II HRT216 is a 21-inch push lawnmower with a Honda GCV160 engine. It is only a year old. If you still don't get any gas, the fuel line is kinked or plugged. BBSXS, 1901VP, 380623. Eugene Brennan (author) from Ireland on August 27, 2019: Overfilling shouldn'treally prevent it from starting. Fill the gas tank using a funnel to avoid spilling gas over the engine (spilled gas could ignite if the engine is hot, so ideally wait until it cools!). The lawn mower was working awesome up until last week. I was able to start it once this year and mowed 3 acres but still have 4 to go. If this is the case, the fuel filter will need to be replaced. It's possible either that petrol flooded the carburetor, so allowing the mower to sit for a while for it to drain and evaporate before attempting to start could help. Top up if necessary. The battery voltage should be over 12 volts for the engine to start. Always read your lawn mower’s owner manual’s instructions for spark plug replacement. I've had a look inside it and very basic, just a single main board that controls the motor. LT 42 Fortunately, replacing a spark plug is simple. Answer: Follow the procedure mentioned in my article: You may need an assistant if the plug can't be seen while pulling the cord. You can find more details in my guide How to Change Lawn Mower Oil, Checking the oil in a lawn mower. If the inlet valve from the tank isn't working properly in it though, maybe fuel could overflow into the carburetor, flooding it Try removing fuel and leave the mower to sit for a while for any fuel in the carburetor to evaporate. The first step in learning to repair lawn mower starting issues is to check the gas tank. It's possible that oil ran out of the engine into the carburetor and fouled the air filter. I overfilled my petrol lawnmower with petrol and now it won’t start !!! Disconnect the spark lead before attempting to move the blade to remove clippings! It's a 190 CC engine. Eugene Brennan (author) from Ireland on May 18, 2019: Possibly, but you need to consult the manual that came with the mower or contact the store for further details. These can jam the blade. My Lawn Mower Won’t Start After Sitting – Here’s How I Fixed It. The important thing is to check or change one thing at a time and see the results. A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. The carburetor might be clogged. If the smoke is white or very light in color and the mower does not run continuously, it is time to have a professional repair company look at the mower. And check inside the tank for any debris that might clog the outlet. Your lawn mower has been sitting for a period of time and now it won’t start. Check the manual for the recommended way to tilt the mower. During the summer, dust and dirt can block the fuel system or clog filters. Skitterphoto, public domain image via, Snow blowers use 4 stroke engines just like lawn mowers, Remove the spark lead if you need to clean under the deck or turn the blade. This article is accurate and true to the best of the author’s knowledge. The most likely cause of a lawn mower engine not starting There are many causes for engine failure but by far, the most common cause is a faulty spark plug. Why the Spark Plug Won't Fire on a Lawn Mower. If you aren't getting a spark at the plug or fuel isn't getting through to the engine (known as fuel starvation), the machine will never startup. Over a 30 year period he has also become self taught in garden power tool maintenance. Disconnect and empty the cuttings bag. (brand new mower). Any advice? I place my mower on it's side, it starts but for seconds only, what should I do to repair it? Try replacing spark plug with a new one. My Harmony HRT 216 Lawn Mower Won't Start But Has Spark?. I've searched around but cant find any info and no local mower … You can wash sponge filters in detergent, squeeze dry in a cloth and add a teaspoon of motor oil and massage it through the foam. Ideally remove the plug. How to fix it for free - YouTube does that need to be removed 1st? Small engines rely on three key components: air intake, spark and gas. Answer: Replace the spark plug, check the ground of the pickup or that the ignition coil is making contact with the engine block. starter cord has limited pull and when I looked underneath saw theres a metal pole on each side preventing full rotation of the blade itself. Your Mower Won't Start: Be sure you're filled with fresh gas first. If your rip cord is pulling but the motor will not fire you might be out of gas! I’m no lawnmower expert, but learning how to solve problems is a great skill to have. I have it tuned up every year (it's only two years old). Make sure the "dead man's handle" control on the mower is held fully against the mower handle while starting. This sticky fuel can clog up the carburetor and prevent the engine from starting. When I turn the key on it does not turn over the engine. When the spark plug doesn't fire or fires intermittently, your lawn mower engine won't start, or if it does start, it will stall. After you have completed all the checks that have been outlined above, try starting your lawnmower to see if it will now start correctly. If the starter cord is hard to pull, check there are no clumps of grass clippings clogging the underside of the deck. I have a decently nice Snapper push lawn mower with a Briggs and Stratton engine. Check the oil is between the high and low marks before starting. If you aren't getting a spark at the plug or fuel isn't getting through to the engine (known as fuel starvation), the machine will never startup. Sometimes I use a thoroughly washed out pump from a handwash bottle that produces a jet and squirt fuel into a container (don't use a spray type version!). This sticky fuel can clog up the carburetor and cause the engine to stall. So, if your Mountfield mower won’t start, make sure you have plenty of fresh fuel, no engine filters … Eugene has a keen interest in DIY and gardening. The charging dynamo/alternator may not be doing its job, the regulator/charging circuit (if it's a separate unit from the dynamo/alternator/dynastarter) may be faulty, fuses could be blown etc. Also, check the spark lead and make sure the kill switch isn't shorting out the primary when the throttle is set to the run position. Steps. A whole bunch of tips on how to get your lawnmower to start again!The problem why it suddenly does not want to start could be in different areas. After storage during winter, seals, pumps and valves in the carburettor can become gummed up with varnish deposits if you leave fuel in the tank. Thanks in advance. Eugene Brennan (author) from Ireland on October 18, 2019: It could be several things including a battery that wasn't fully charged when you bought it so starting took a big chunk of charge out of it. When your lawn mower sits for a period of time, certain parts may need to be cleaned, tightened, or replaced. One of the most common reasons your lawn mower might not be starting is your tank is running on empty. If none of the above tactics work, you can check out our tool to diagnose and troubleshoot your mower or take it in for lawn mower maintenance at a local service dealer. Old fuel can make starting difficult, especially fuel containing ethanol which attracts moisture, potentially causing corrosion. I started it and it ran for about 5 minutes, stuttered and died. So why won't your riding mower start? 4. The air is warmer and the grass is growing – time to break out the lawn mower. Content is for informational or entertainment purposes only and does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters. Check the oil level is ok before starting. One of the last possible reasons for a lawn mower that will not … The battery voltage should be 13 volt or so for a fully charged battery, so if it's less than 12 volt there's some sort of charging issue. (An assistant could hold it with a plastic clothes peg). However, my lawnmower quit starting for good right at the end of the season last year. With that in mind, we are going to cover some of the more common lawn mower issues.
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