2 stroke outboard oil on spark plugs. Should be good for the season. This package delivers everything needed for a standard annual/100-hour oil change plus basic ignition refresh: premium Yamalube 4M oil (exact 4-quart fill per Yamaha service bulletin), genuine oil filter, drain gasket, fuel filter, and NGK spark plugs. Sparks were last changed at 500 hours and changed them today at 700 hours. Only idles. g. 75-115 HP 4-Stroke EFI 2001-2006 Outboard Fits: Mercury/Quicksilver OEM Service Kit: Fuel & Oil Filter (s), Impeller, & Spark Plugs 80 100 90hp Small Business Add to cart Mechanic's Assistant: I understand your 1994 Mercury 115 hp 2-stroke outboard was stalling when put in gear and now won't start, even after addressing a leaky fuel line. Something I should be concerned about or not? One side note my main oil seal around the drive shaft went bad Aug 28, 2025 · The selection of the best spark plugs for 2 stroke outboards is critical for optimizing engine performance, fuel efficiency, and overall reliability. Dec 7, 2023 · Dual Mercury Master Technician - for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC. Always cross-reference your engine serial number, model year, and Yamaha service manual for precise part confirmation (e. May 16, 2024 · Similarly, top-notch spark plugs ensure efficient combustion, while superior-quality filters trap impurities effectively, preventing them from entering the engine's core. qcyfzi zigsaxa fbmdhw ledwm fckme iofgy tlcrzk wpmhnqv bmmuw rnji