While plugs are pre-gapped from the factory, the gap may need to be adjusted for the vehicle that the spark plug is intended for. Read more. questions? ft. HCM20, HCM20P5, HCM20P5G, HSB21P5EG, HSC20-2, HSD20, HSD20P5, HSD20V, HSD20P-2, HSD20-2, RE1030E, RE1230E, RE830, RE830E, 51MD, 56DH, 56DHS, 56H, 56HS, 56SF, 56SFE, ROYAL 53S, 12PB, 12SB, 14PZ, 14SZ, F725, JA62, JA65, JS60, JS61, JS63, PP225, PP2260, PP22R55, PP20375, PP500, PP722, PP735, PP750, PP751, PP752, PP800M, PP835, PP12538, PP125H38, PP125R38, PP12542, PP125H42, PP1242S, PP12R38M, PP1036S, PP1136, PP145H42, PP15H42, PP11536, BLOWERS, CHIPPERS, RAKE, THATCHER, VACUUM, AERATOR, ICE DRILL, POST HOLE DRILL, TILLER, BRUSHCUTTER, LOG SPLITTER, THATCHER, VACUUM, CHIPPER, COMPOSTER, SHREDDER, WOOD SPLITTER, COMPOSTER, SHREDDER, SWEEPER, TILLER, TRACTOR, PMO456025, PMO544202, PMO544222 8.0 hp Tecumseh, Trivalent metal plating provides superior anti-corrosion and anti-seizing properties, Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer. You can depend on NGK for quality and reliability. However, a plug may fit hundreds of engines, from cars to golf carts. Cast Iron: 18-25.3 lb. Fast shipping and great service! $6.63. Also, the spark plug gap should never exceed .055" unless pre-set by the manufacturer. NGK always works very closely with the engine manufacturer to ensure a perfect match between spark plug and machine. However, without testing different index positions in an engine on a dyno, it is nearly impossible to determine which index increases performance. Spark plugs traditionally leave the factory pre-gapped for their most popular application. 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.Follow this 3-step guide for resources to walk you through the process or jump to the section. Since the gap size has a direct effect on the voltage necessary to jump the gap and ionize (light) the air-fuel mixture, careful attention is required. K-MOTOR PERFORMANCE. Engine Displacement: Ariens Champion NGK Torch 169cc 21547200 L90C: BR4HS E6RC 265cc 21547200 L90C: BR4HS E6RC All Spark plug gap set between .025" to .030" Products. Looking to fix your NGK? 37 replacement spark plugs for NGK B2LM. 3/4” Reach R5184-95 7485 291 IC 13/16” Hex R5184-10 7457 291 IC The small tip improves ignitibility, anti-fouling, quicker starts, and less voltage requirements to fire. Sorry, no powersports applications are associated with this part. 0:53 . Image Part No. When washers are added, the spark plug may loosen if the washers don’t crush properly and hold the torque. Spark plugs are a small component, but they play a big role in starting machines. The spark plug gap adjustment should not be changed more than 3 times and should not exceed .008" in either direction. We sell high quality NGK Spark Plugs and other parts online. The added energy allows them to increase the gap, but still have enough voltage to jump the gap. Place your order online today and pick it up in store at your convenience. NGK do not recommend gap adjustment for precious metal spark plugs. Also, if too many washers are added, the firing end of the plug will not be as far into the combustion chamber and performance can decrease. Oil Filters. The electrode gap is meticulously controlled when a spark plug is manufactured, and due to the very large selection of plugs, in most cases the electrode gap is set to suit the vehicle as recommended in our catalogue. Possibly the best spark plug period. Leading in the automotive industry, NGK spark plugs are available for virtually every type of engine – cars, motorcycles, marine applications, small engines, and power tools. Indexing spark plugs will typically make only a few more horsepower – usually less than 1% of total engine output. 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