If your lawnmower is running rough or is hard to start, it is likely that the spark plug is bad. Use a spark plug wrench to replace the plug in a few minutes.Know More
Most mowers use plug wires that attach through a round metal cylinder that fits over the metal end of the plug. Pull the wire straight out from the engine to remove the electrode.
Prevent debris from falling into the hole by using a small brush to sweep it away before removing the plug.
Generally, plugs require a 13/16-inch or a 3/4-inch wrench. Place the wrench over the plug, and turn counterclockwise to loosen and remove it.
Replace the plug if it has broken porcelain or a burned electrode. Change the plug at the beginning of each mowing season or after every 100 hours of use.
Use a wire feeler gauge to check the plug gap. Most small engines require a 0.3-inch gap. You should feel a slight drag as you pull the wire through the plug gap. Use the prongs on the feeler gauge to adjust the electrode if necessary.
Insert the new plug into the hole and turn clockwise to tighten. Once the plug becomes snug, tighten another one-quarter turn. Push the plug wire onto the plug.
A spark plug socket is a specialized, deep-length socket designed to fit over the plug terminal and insulator while it grips the hex nut for removal. Most spark plug sockets come in two sizes: 5/8 inches and 13/16 inches, accommodating standard spark plug brands such as Bosch, Champion and NGK.Full Answer >
Sparkplug wrenches are available in a 5/8-inch and 13/16-inch size, and most have a rubber boot inside to help retrieve the plug from the well once it is loose. Using these wrenches requires an appropriately sized socket driver and extension.Full Answer >
It is impossible to drive a car with a missing spark plug, since the plugs are essential to the car starting in the first place. Spark plugs work to put the car's pistons into motion.Full Answer >
Tiny shards of spark plug porcelain have small hard points which allow them to easily find a breaking point in glass. They can also be used to break the side window of vehicles. Spark plug porcelain fragments are sometimes referred to as ninja rocks because of their ability to break glass with ease.Full Answer >