homepostsDoes it matter what spark plugs you use in lawn mower?

Does it matter what spark plugs you use in lawn mower?

Dennis WaldenSep 13, 2021

The spark plugs in both types of engine work on the same basic principle. ... Some automotive and lawn mower spark plugs may be interchangeable, but many others are not because of physical differences.

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Regarding this, what happens if you use the wrong spark plug in a lawn mower?

Spark plugs that are gapped incorrectly can cause an engine to miss, or run erratically, especially during idle. The incorrect spark plug gaps can cause uneven firing of individual spark plugs and delay engine combustion; both of which can cause an engine to miss or idle erratically.

Simply so, what type of spark plug does a Briggs and Stratton? Flathead Engine Spark Plugs & Gaps
Replacement Part TypeBriggs & Stratton Spark Plug Part NumberSpark Plug Gap
Extended Life Series® OHV Spark Plug Platinum (Replaces Champion RC12YC)696202 5066 (5066D, 5066H).030”
Resistor Spark plug - hotter spark (Replaces Champion RC14YC)496018S 5092.030”
Resistor692051.020”

Additionally, what is the NGK equivalent to a champion RC12YC?

The NGK I stock as an equivalent to the RC12YC is the BCP(R)5ES (6130).

How often should you change the spark plugs on a lawn mower?

every 25 hours

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.

How do I know if my lawn mower needs a new spark plug?

Here's How to Know if a Lawn Mower Spark Plug is Bad
  1. You can't get the engine to fire up at all.
  2. You have to tug extra hard for longer than usual on the rewind.
  3. Your lawn mower loses power while moving.
  4. The gas runs out quicker than it used to.

What happens if you put wrong spark plugs?

If the spark plug fires at the wrong time, this could lead to constant rattling, pinging or knocking sounds. Hard vehicle start. If your car is having trouble starting or just feels disjointed and jerky, your spark plugs may not be working right, and this can lead to misfires and erratic performance.

How do I know if my lawnmower spark plug is firing?

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.

Is spark plug RC12YX the same as RC12YC?

We can find no cross reference for RC12YX to any NGK number, but RC12YC does cross to NGK BCPR5ES .

What is the recommended spark plug gap?

For most racing applications, you usually want the plug gap to be between 0.020 and 0.040 of an inch. Most engine builders seem to settle around 0.035 of an inch. Factors such as the type of ignition you run, cylinder heads, fuel and even timing can affect how much gap will work best for you.
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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.

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