homepostsWhat size spark plug goes in a Craftsman lawn mower?

What size spark plug goes in a Craftsman lawn mower?

Dennis WaldenSep 13, 2021

Replacement Plug

The Craftsman 4.5hp mower uses either a Champion model RJ19LM or J19LM spark plug, or equivalent, with the gap set at . 030 inch.

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Secondly, what spark plug goes in a Briggs and Stratton 6.75 HP?

This Briggs & Stratton spark plug is good for 625e, 675ex, 725ex series, 625-675 series and Quantum 3.5-6.75 gross HP engines.

BrandBriggs & Stratton
Model799876
Assembled Product Dimensions (L x W x H)5.68 x 2.50 x 0.87 Inches
Moreover, what size are lawnmower spark plugs? Ideally, most automobile spark plugs use a thread size of about 14mm thread why those of lawn mower range between 10 to 12 mm. Because of these differences in thread sizes, they just won't fit into the same hole or the unit in which the plug is to be fit in.

Also to know is, how do I know what spark plug I need for my lawn mower?

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.

What spark plug does a craftsman LT1000 take?

Lumix GC NGK Spark Plug For John Deere LA135 Craftsman LT1000 YT4000 YTS3000 Tractors.

What happens if you put the wrong spark plug in your 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.

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.

What kind 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”

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 .

Are spark plugs Universal for lawn mowers?

Spark plugs aren't universal; you have to make sure that you buy one that fits your mower. ... If you no longer have the manual or the number has rubbed off, you can always remove the plug first and take it to AutoZone with you.

Do lawn mower spark plugs come pre gapped?

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.

What are the different sizes of spark plugs?

There are currently three spark plug wrench sizes used on motorcycles and ATVs, 5/8 “, 18 mm and 13/16″.
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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.