! Importance of the Spark Plug Gap. Box 772 Sun City, CA 92586 888-800-9629 championsparkplugs.com Writer Bio Theresa Custodio is a Michigan-certified nurseryman with over 10 years experience. Champion 5861 RJ19LM EZ Start Plug. Popped the BR2LM in, primed, started on first pull and has continued to start on first pull every time. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Check here for special coupons and promotions. Champion Spark Plugs, a wholly owned brand of Federal-Mogul Corporation that specializes in making spark plugs for automobiles, has the RJ19LM and the J19LM in its product line-up. BRAND CHAMPION . The "R" in the plug number indicates a "resistor" -type spark plug, which makes for a stronger spark and less electrode wear. The Champion RJ19LM Copper Plus spark plug fits many small engines as an upgrade to the Champion J19LM spark plug. The last reason is the Heat Range. What is the gap for a Champion Spark Plug RJ19LM? Champion spark plug RJ19LM is for lawn mowers or similar equipment. The spark plug gap for my engine is supposed to be .020". Note: If using a torque wrench vs. plug wrench, please refer to the Torque Recommendations chart below. The standard gap is .030 inches or 0.76mm. These are two totally different plugs so what is the correct gap size for the RC12YC plug? The gap is the distance between the center and side electrodes, set so arcing occurs at the proper voltage that ignites the … Install the new plug finger tight, and complete the installation with a torque wrench. The RJ19LM has a reach of 3/8' and the RC12YC has a reach of 3/4". To me, this says they are the same, however, again, I have read they are not the same. My Tecumseh 8hp engine was a pig to start with a Champion RJ19LM. Order Small Engine - Spark Plugs for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. Champion 5861 RJ19LM EZ Start Plug SKU #RJ19LM EZ. RJ19LM 13/16" 3403245 All Champion spark plugs in the contained cross reference lists are available to Bunnings customers either in store or upon special order request. Despite what some other reviewers have stated, this plug is NOT PRE-GAPPED ! Get shopping advice from experts, friends and the community! Owners manual states that the replacement spark plug is RJ19LM with a gap of .030 in. Booster gap delivers maximum voltage where its needed most. When custom-selecting a spark plug, the electrode length and projection should be included in the calculation when taking into consideration the clearance in the combustion chamber. You must be a Champion dealer. ITEM #CHA5861. Use the Champion torque recommendation below as a guide for tightening all spark plugs. My dealer said to try the NGK - he guaranteed it would start and run better and if it didn't, he'd refund my money. Bought a new RJ19LM - same thing. The RJ19LM allow for more clearance then the other. When replacing spark plugs, ensuring that the plugs have the proper gap is critical to engine performance. The local NAPA has RJ19LM plugs and listed down the side of the packaging is RJ19LMC. Champion Spark Plugs P.O. Projected core nose provides maximum fouling resistance for long, dependable life. Although they are essentially the same, the "R" designation of the former indicates an added feature over the latter. I removed the old plug from the engine but to my surprise found a thinner and longer RC12YC plug. Step-by-Step Instructions Tapered Seat Plugs. Most mowers that use the RJ19LM have a gap of .030". Step One. For technical support re Champion spark plugs please call Motospecs on 1300 337 636 (8.30am-5.00pm EST Monday to Friday) Is critical champion rj19lm gap engine performance and complete the installation with a gap of ''. 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