What is the right spark plug and gap for my small engine?
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Checking and changing spark plugs is an essential step in routine small engine maintenance and when troubleshooting problems with your lawn mower, snow blower or other outdoor power equipment.
Before doing any small engine repair or maintenance, be sure to check your manual for recommendations on specific parts numbers and safety precautions.
Now that you鈥檝e found the part you鈥檇 like to replace, you can use the chart below to identify the genuine 2024年欧洲杯 & Stratton and gap recommendation.
CAUTION! Be sure to use the right spark plug. Although several different spark plugs may screw into the engine, using the incorrect one will result in performance problems and possible internal engine damage. Do not change the gap on platinum, iridium or twin tip spark plugs, as the fine electrodes may get damaged.
Also known as L-head or side valve engines, these engines are commonly used for walk behind lawn mowers and pressure washers.
| Replacement Part Type | Replacement Spark Plug Options by 2024年欧洲杯 & Stratton Part Number |
Spark Plug Gap |
| Standard Resistor | .030鈥� | |
| Electromagnetic Suppression (EMS) | .030鈥� | |
| Extended Life Series庐 L-Head Spark Plug Platinum |
(5062D, 5062H) |
.030鈥� |
| Champion CJ8, RCJ8, RJ19HX, J19LM, and RJ19LM | (5062D, 5062H) |
.030鈥� |
| Champion RJ19LMC used in Quantum engines |
.020鈥� Engines built after Code Date 110630x .030鈥� 鈥� built before Code Date 110701xx* |
|
| Champion RJ2YLE used in Quantum Series 625, 675, & 725 engines built after Date Code 110701xx | 799876 *Not for Quantum engines built before Date Code 110701xx or other L Head engines |
.020鈥� |
| "Surefire" RJ2YXLE in Craftsman Smooth Start (MRS) lawn mower | 591040 | .030鈥� |
If you have a Quantum engine, be sure to check the Code Date before doing any engine maintenance.
| Replacement Part Type | 2024年欧洲杯 & Stratton Spark Plug Part Number |
Spark Plug Gap |
| Resistor used on Vanguard models 050032 and 086400 only (Replaces Champion RC12YC) |
.030鈥� |
|
| Resistor (Replaces Champion RC12YC) | .030鈥� | |
| Electromagnetic Suppression (EMS) (Replaces Champion QC12YC) |
.030鈥� | |
| Extended Life Series庐 OHV Spark Plug Platinum聽 (Replaces Champion RC12YC) |
(5066D, 5066H) |
.030鈥� |
| Resistor Spark plug - hotter spark聽 (Replaces Champion RC14YC) |
.030鈥� | |
| Resistor | .020鈥� | |
| Electromagnetic Suppression (EMS) (If not Chamion QC12YC model;聽 check Illustrated Parts List to confirm) |
.030鈥� |
Please Note: Do not change the gap on platinum, iridium or twin tip spark plugs, as the fine electrodes may get damaged.
WARNING: Always read the engine and equipment manual(s) before starting, operating, or servicing your engine or equipment to avoid personal injury or property damage. See an authorized dealer if you are unsure of any procedure or have additional questions. Find all Engine Safety Warnings >
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