Are all small engine spark plugs the same?
No, every lawnmower has a specific spark plug for its engine. And, each engine has a unique engine model number, which determines the compatibility of a spark plug. Unless the spark plug fits the engine, you can’t get enough support for the engine. An incorrectly installed spark plug may damage or cause engine failure.
What size spark plug do I need for my lawn mower?
Use a “small engine” Spark Plug as most car engine spark plugs have a larger thread. Ensure that it has the right thread size (usually, 10 to 12mm) and the correct thread length (usually, 3/8 inch). Also, set the proper gap that matches the engine’s gap requirement.
What size is a small engine spark plug?
Most auto engines use spark plugs with a thread size of around 14mm, whereas lawn mower engines use plugs with thread sizes between 10 and 12 mm.
Are small engine spark plugs universal?
Spark plugs aren’t universal; you have to make sure that you buy one that fits your mower. You can consult your owners’ manual to determine the types your lawn mower can use or take a look at the plug’s ceramic insulator, which usually has the number printed on it.
What happens if you use the wrong spark plug in a lawn mower?
According to NGK, the world’s leading manufacturer of spark plugs, using the wrong spark plug can result in low ignitability within the cylinder. This causes the improper combustion of fuel, which can cause a reduced output of power as well as reduced fuel efficiency. Eventually, your engine will misfire.
What is the difference between J19LM and RJ19LM?
Champion Spark Plugs, a wholly owned brand of Federal-Mogul Corporation that specializes in making spark plugs for automobiles, has the RJ19LM and the J19LM in its product line-up. Although they are essentially the same, the “R” designation of the former indicates an added feature over the latter.