Is RC12YC same as RC12YX?
We can find no cross reference for RC12YX to any NGK number, but RC12YC does cross to NGK BCPR5ES .
Additionally, what does a champion RC12YC spark plug fit?
RC12YC Spark Plugs
|Center Electrode||Copper Core|
|Fits||BRIGGS & STRATTON GAS ENGINES -- Intek, Vanguard single cylinder OHV KOHLER GAS ENGINES -- Command OHV, K series, 16.0/TH16, 18.0/TH18|
Also question is, what gap should my lawn mower spark plug be?
Can I use RC14YC instead of RC12YC?
EITHER RC12YC or RC14YC will work. But for best results use NGK BKR5E or BKR6E. They last longer and are less prone to fouling.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.WD-40 removes carbon residue and keeps moisture away from spark plugs and spark plug wires. WD stands for Water Displacement, so if your spark plugs are wet or you need to drive moisture away from ignition distributors, for example, WD-40 is a product you should have handy!If the spark plug gap is incorrectly set, it can lead to engine issues. The customer may experience loss of power, misfires, spark plug fouling, increased plug wear, or poor gas mileage.Symptoms of bad spark plugs can include:
- Reduced gas mileage.
- Lack of acceleration.
- Hard starts.
- Engine misfires.
- Rough idling.
- [V] Shell Design - This refers to the thread size and reach of the spark plug.
-  Heat Range - The middle number indicates the heat range of the spark plug, the higher the number the hotter the heat range.