The engine safety switch on a walk-behind lawn mower stops the ignition coil from sparking and has a brake pad that slows the flywheel. Without this correct ratio of gas and air, your lawn mower may run rough and may not be able to start. For additional help, watch our can't pull the recoil starter rope and how to fix a pull cord stuck after tipping mower videos. Fix:Test the switch using a multimeter or youcan temporarily bypass the safety switch to identify a bad switch. Despite its name, the dead mans control is one of the most important safety features on your mower. The choke plate should be fully closed. The cleaning process depends on the size of your mower, but the general rule is to avoid getting gas on yourself. Cloudflare Ray ID: 7a151cd32c303cd4 The battery must be charged at a reading of 12.7 volts or greater. A: To check the battery in your Craftsman M110 lawn mower, use a multimeter to measure the voltage of the battery. Replace the primer bulb if it's damaged. If the air filter is dirty or clogged, it can restrict air flow, causing the engine to run poorly or fail to start. If the flywheel key gets dented when the blade hits an object, the engine runs rough or vibrates severely. English (US) Espaol Franais (Canada) . CRAFTSMAN manuals are available to help put your tools in operation. Engine lacks power. The Craftsman push mower uses a four-stroke engine, which means that there are four distinct strokes that occur during one complete cycle of engine operation. In this case, the choke plate should close to temporarily restrict airflow through the carburetor so more fuel can enter the cylinder. If you receive a reading of less than 12.7 volts, you must charge your battery. Its pretty straightforward, but a manual choke should be set to full when starting up a cold engine. Plan the perfect garden with our interactive tool . Find the perfect fit for your refrigerator. Gas renders the mowers internal engine hollow, and its hard plastic shell has no way of absorbing the gass fumes. Starting Process Of A Riding Lawnmower Steps to follow: Step #1: Take your Position Sit on the seat before turning on the lawnmower and make sure you have access to all the necessary pedals and levers by your hand and leg. If youre having trouble starting your lawnmower and it turns off after a few minutes, youll need to replace your gas cap. The ignition coil sits next to the flywheel and generates electrical current to fire the spark plug when magnets on the flywheel pass the ignition coil. The safety bar holds down the engines throttle lever and prevents it from moving to the highest position when you arent holding it down with your foot. You can purchase lawn and garden batteries at hardware and auto parts stores. Replace a fuel filter that doesnt allow fuel to pass through. This is a recipe for a dangerous situation. Check your owner's manual for more information. If you have a paper filter thats just a little dirty, you can tap the filter on a hard surface to clean it. Additionally, by following preventative maintenance tips, you can help to prevent future problems and keep your lawn mower running smoothly for years to come. However, they dont exist. Read more about the steps and items needed tocharge your battery here. Learn about the top 10 must-have electric lawn & garden tools for 2023, Learn how to fix your lawn mower when its engine surges, Learn how to safely use starter fluid on a lawn mower. Many times, mowers stopped working in the middle of a customers lawn or right before a big rain storm, or before a big party. Disclaimer:Due to factors beyond the control of Hank's Garage, I cannot guarantee against improper use or unauthorized modifications of this information. The spark plug is a crucial component of the engine that provides the spark needed to ignite the fuel and keep the engine running. Learn why your walk-behind lawn mower won't start at Sears PartsDirect. Learn which plants thrive in your Hardiness Zone with our new interactive map! Use a clamp to stop fuel flow while you are moving the line into the container and then remove the clamp to test flow. The spark plug is responsible for igniting the fuel mixture in the cylinder; therefore, its an essential component to the engine. You need to find the serial number of your mower, then replace the old cable with a new one. If the fuel pump appears to be in good condition, you need to check the fuel lines to make sure fuel is getting to the fuel pump and fuel is being pumped out of the fuel pump. Fuel problems are one of the most common causes of lawn mower difficulties. You may need to tune up the engine when it vibrates too much or won't stay running. Replace or rebuild the carburetor if it's clogged. The second stroke is the compression stroke, where the piston moves upward, compressing the mixture of fuel and air. This post may include affiliate links. The recoil starter has a spring that retracts the starter rope used to pull-start a gas mower. If the Craftsman push mower wont start, the first thing to check is the gas tank. Then, turn off the fuse or unplug the spark plug wire from its plug. Can't turn engine off. Make sure to gap them according to the manufacturers specifications. 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. A: If your Craftsman M110 lawn mowers air filter is clogged, youll need to clean or replace it. An excessively dirty spark plug can foul out causing your engine to misfire. As an Amazon Associate, we earn from qualifying purchases. Check this by looking at the front of the engine to make sure that it is seated securely. Although your mower might look different from this Craftsman 21-inch mower, they all work pretty much the same. This repair guide shows how to replace a lawn mower flywheel key. This helps dissolve any water and alcohol in the gas tank, and ensures that all of your fuel lines are clean and free from obstructions. FREE SHIPPING! Next, you need to spraya carburetorcleaner into the tube and usecompressed air to blow air through the tube until the line is no longer clogged. Some tanks have a removable fuel filter that you can clean or replace. Clean and rebuild the carburetor using a carburetor rebuild kit if the engine won't start or it runs rough because the carburetor isn't supplying the engine with fuel. 11 - Craftsman Lawn Mower Recoil Spring When the starter rope is pulled and let go the recoil spring is supposed to recoil the rope onto a pulley. Make sure the fuel tank is filled with fresh gasoline before attempting to start the mower. If the Craftsman push mower will not start, it is likely due to one of these four strokes not occurring. Q: What could be the reason for my Craftsman M110 lawn mower not starting? Pull the starter rope repeatedly, until the needle on the gauge stops rising. Fix: Test your Craftsman mower solenoid by following the steps here. Visit our website to locate the nearest dealer to you. Make sure that when youre not using your mower, the gas valve is turned off, or else you might run out of gas while youre mowing. -34%. If the fuel is stale, old or has been mixed with oil, it can cause the mower to fail to start. Im just mentioning it just in case you forgot to check. Your IP: If your Craftsman M110 lawn mower is experiencing difficulty starting, there are a few simple repairs you can make to get it running smoothly again. Perhaps the plug is defective and not providing the necessary charge to make a spark, or the gap between electrodes is too wide. Are you not getting fuel or oil to the proper locations? Fix:Remove your spark plug and inspect it for signs ofcarbon buildup orcracked porcelain insulator. To clean or replace the air filter, youll need to remove it from the mower and either clean it with a soft brush or air, or replace it with a new one. Sometimes these mowers break down or start acting "funny," causing the mower act sluggish or not turn on. If you inspect the flywheel key and find it dented or sheared, replace it. In the future, if you're going to leave gas in the tank for a while, add fuel stabilizer. Its important to regularly drain old gas, particularly during the winter months, when moisture and dirt can collect in the tank. When the spark plug builds up residue from poor maintenance or not being cleaned, it can cause your machine to malfunction. Craftsman should fire the dumb fucks that designed and approved it. Another problem you can encounter with your Craftsman is the problem of your mower smoking. As a result, its important to drain and replace the gas every fall. You can test the spark plug with a tester to see if its working properly when you crank up the mower, you should observe a strong spark between the testers terminals. Fix:Clean corroded terminals in a baking soda solution containing 2 cups of water and 3 rounded tablespoons of baking soda. To drain the tank, lay a shop rag on the mower deck below the tank to catch spills. If the engine wont start, run the engine for up to 10 minutes using an automotive fuel stabilizer in the fuel tank. Step four, replace the spark plug and reconnect the spark plug wire. Old fuel can leave gummy deposits when it evaporates, which may plug the fuel filter. The air filter plays an important role in maintaining the engines performance. Save my name, email, and website in this browser for the next time I comment. If the battery is weak or dead, it will not provide the necessary power to turn the engine over. 4.4 out of 5 stars 153. To troubleshoot this issue, tip the mower onto its side. Change the spark plug if the mower has no leaks. Before working on a malfunctioning mower, you should check for the missing safety bar of a dead mans control. If the spark plug is dirty, it wont be able to create a spark to ignite the gasoline. If your mower uses a battery, charge or replace the battery if it won't power the starter to spin the engine. If your snow blower still doesnt start you should consider taking it in for service. First step, check the fuel tank to make sure there is enough fuel to operate your snow blower. Replace your solenoid if it is found to be bad. If the air filter is dirty or clogged, it can restrict air flow, causing the engine to run poorly or fail to start. If the coil isn't sparking, remove the kill wire from the ignition coil and check the engine for spark. Without this safety mechanism, the engine will shut off at the highest position and stall if you let your foot off its pedal. 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