![]() ![]() A bad spark plug can cause all sorts of problems, from making it difficult to start your mower to causing it to run erratically. If your lawn mower isn’t starting up as easily as it used to, or if it’s running rough once it’s going, there’s a good chance that the spark plug is to blame. How to Tell If a Lawn Mower Spark Plug is Bad Hand-tighten the new plug until it’s snug, then use the socket wrench to give it an extra quarter turn. Next, clean any dirt or debris from around the spark plug hole before installing the new plug. Be careful not to over-tighten or strip the threads. Once you’ve found the spark plug, use a socket wrench to remove it. If you’re not sure where your model’s spark plug is located, consult your owner’s manual for guidance. However, some models may have the spark plug located underneath the engine. Most lawn mower engines have the spark plug located on the side of the engine, making it easy to spot and replace. Testing your spark plugs regularly is a good way to prevent bigger problems down the road, so it’s worth taking a few minutes to do this simple test every once in awhile. If there’s no spark or if the spark is weak, then you’ll need to replace the plug. Then, turn on the engine and watch for a spark between the electrode and ground. To test the spark plug, first remove it from the lawn mower and attach the spark tester in its place. All you need is a simple spark tester, which you can purchase at any auto parts store. Luckily, testing a spark plug is a relatively easy process that anyone can do. If your lawn mower isn’t starting, one possible culprit could be a faulty spark plug. ![]() If everything looks normal then proceed with installing the new plugs following these same steps in reverse order being careful not over-tighten them when putting them back in place! How to Test a Spark Plug on a Lawn Mower With the old sparkplug now removed, inspect it closely for any damage such as corrosion or deposits on the electrode tip which could indicate an issue with your engine’s ignition system. Once you have determined which way the spark plug needs to be turned, use a wrench (if possible) or pliers (if necessary) to loosen and remove the spark plug from its position.īe careful not damage the threads on the spark plug hole as this can make it difficult or impossible to re-install the new one later on.Ĥ. However, there are some exceptions so be sure to consult your lawn mower’s owner’s manual if you are unsure.ģ. ![]() In most cases, the spark plug will need to be turned counterclockwise in order to loosen it and then removed by hand. Next, locate the spark plug and identify which way it needs to be turned in order to be removed. ![]() If it is hot, wait for it to cool down before proceeding.Ģ. First, make sure that the spark plug is cool before attempting to remove it. This is because, in some cases, the socket may be damaged or missing and you will need to know how to remove the spark plug without it. It is important to know how to remove a lawn mower spark plug without a socket. How to Remove Lawn Mower Spark Plug Without Socket Reconnect the spark plug wire to the new spark plug and pull to make sure it is on securely.Use the spark plug wrench to tighten the new spark plug clockwise until it is tight.Screw in the new spark plug to the engine by hand until it is snug.Clean out any debris around the spark plug hole with a wire brush.Unscrew the spark plug from the engine using a spark plug wrench.Remove the spark plug wire from the spark plug.Part of that is changing the spark plugs on a regular basis. It’s always a good idea to keep your lawn mower in top running condition. ![]()
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