Most spark plugs require a 5/8" (16mm) size spark plug socket. This refers to the size of the flats on the spark plug that are in contact with the socket. This spark plug requires the 5/8" spark plug socket, which will probably fit a 3/8 ratchet extension.
Considering this, what size socket is a lawn mower spark plug?
Spark plug sockets come in two sizes: 5/8 inches and 13/16 inches. Most spark plug sockets have a rubber insert that holds the plug snugly in place. You may also need a universal joint if your spark plugs are difficult to reach.
Likewise, what size socket wrench Do I need to remove a spark plug from a lawn mower? Drive socket wrench in 1/2 inches or 3/8 inches, whichever is appropriate for your machine. New spark plug.
Like rotating tires or changing oil, replacing spark plugs is a job that can be easily, and inexpensively, done in the confines of your own home. Although they don't need maintenance as often as the other two tasks, spark plugs are equally as important and require consistent monitoring.
Check the gap on the new spark plug before installing it. A new plug will often come pre-gapped to match your specific engine, but use a spark plug gauge to verify that it matches the manufacturer's specifications.
To remove spark plugs, you need a spark plug removal tool that grabs and twists the spark plugs inside your vehicle's engine. Because spark plugs can be in awkward positions, you may also need an extension for your spark plug socket.
Lawn mower plugs may have a shorter thread length than auto plugs. The threads on many automobile plugs are 1/2 inch or 3/4 inch long. Many lawn mower engines use a plug with threads only 3/8 inch long. ... Most mower plugs use a metal gasket washer as a cylinder seal, as do many auto plugs.
To safely clean a spark plug, you should use a wire brush or spray-on plug cleaner specifically designed for this ignition part. You can also use a sturdy knife to scrape off tough deposits. Note: NEVER clean a spark plug with a shot blaster or abrasives.