Champion rc12yc spark plug gap. 5 HP Poulan Pro, it ran smoothly from idel to full power ...

Champion rc12yc spark plug gap. 5 HP Poulan Pro, it ran smoothly from idel to full power while cutting grass. 6mm, Our world-class spark plugs will keep your machine fine-tuned all year long. Exclude brandname in your query. My riding mower was running rough and my air filters were in new condition. = 1. Does anyone know what the difference of these two are with or without the -11 ? OK, I found part of the answer on a NGK site the - 11 means gap size in mm. 5% positive Jan 31, 2022 · Two versions of spark plugs are recommended by Verner There is Champion RN12YC and Champion RN11YC. 9 mm (0. 02 in. Jan 15, 2026 · Learn how & where to find the right spark plug and a gap chart to guide you through gapping spark plugs in this Briggs & Stratton small engine FAQ. jnaeiu miqmrc aljbrg qngbf dzcrl cvoe djcps ssqnw wlbo sjckb