homepostsHow do I know which spark plug for my lawn mower?

How do I know which spark plug for my lawn mower?

Dennis WaldenSep 13, 2021

Spark plugs are typically located on the back or side of a lawn mower engine. Look for a short wire that's about 1/4-in. -thick leading to the top of a short, cylindrical protrusion from the engine. If you're not sure where the spark plug is, consult your owner's manual.

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Correspondingly, are Autolite spark plugs good for small engines?

Autolite Copper Small Engine Spark Plugs are engineered for long life and cover lawn mowers, motorcycles, recreational vehicles, and other small power equipment. Small engines work under dirty, demanding conditions. ... Autolite is the leading supplier of spark plugs; offering the best alternative to OE spark plugs.

In this manner, are lawn mower spark plugs interchangeable? Yes there are different plugs for different engines. Usually you need the engine model on your mower, and take in the old spark plug to the hardware store. Ask for someone to help you find the right spark plug and tell them your engine model and mower model.

In this way, what are the symptoms of a bad spark plug on a lawn mower?

Faulty spark plug warning signs

  • The engine requires repeated attempts to start or the engine won't start at all.
  • The engine misfires or runs rough.
  • The engine starts, but stalls shortly after.
  • There is a noticeable increase in fuel consumption during normal equipment use.

How often should a lawn mower spark plug be changed?

every 25 hours

What is the difference between RC12YC and rc14yc spark plug?

What is the difference between rc12yc and rc14yc spark plug? The higher number is a slightly hotter spark type plug. The RC14YC4 is now the standard plug for the 990/992 Generac engines. The 999 in the new 16-22kW Evolution (7000 series) units and older 20kW units are still using the cooler RC12YC4 plugs.

Which is better NGK or autolite?

The quality of ngk is better, but I have one car that just likes autolites better, same gap & heat range. Car runs better with the autolites and the ngk will start to slowly load up.

Who makes the best spark plugs for small engines?

Our Top Picks
  • Best Overall. Champion Copper Plus 71 Spark Plug. Photo: amazon.com. ...
  • Best Bang For The Buck. Maxpower 334058 Spark Plug For Riding Mowers. Photo: amazon.com. ...
  • Upgrade Pick. E3 Spark Plugs E3. ...
  • Best Platinum. Briggs & Stratton 5062K Spark Plug Platinum. ...
  • Best Iridium. Fram Autolite XP5325 Iridium XP Spark Plug.

Are Autolite spark plugs pre gapped?

Autolite® and all spark plug manufacturers offer spark plugs pre-gapped in the most popular gap sizes. Because of the many gap sizes required, no one offers spark plugs properly gapped for every application. Gapping has always been the job of the installer.

What kind of spark plug do I need for my Craftsman lawn mower?

Replacement Plug

The Craftsman 4.5hp mower uses either a Champion model RJ19LM or J19LM spark plug, or equivalent, with the gap set at .

Are spark plugs universal?

While you should buy spark plugs in matching sets for your vehicle, not all spark plugs are universal. Spark plugs come in different sizes with different gaps and are manufactured using a variety of metals. Finding the ones that you need can be difficult.

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.
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About The Author

Dennis Walden

Dennis owns a small farm and loves to grill since his early childhood. He’s a professional cook, but hiking and enjoying the great outdoors is his no less favorite part of life.