{"product_id":"timer-base-for-johnson-evinrude-4-cyl-cross-flow-65-140-hp-1985-1998-replaces-oem-763783-sierra-18-99414","title":"Sierra Timer Base 18-99414 for Johnson\/Evinrude 4 Cylinder Cross Flow Engines 65-140 HP (1985-1998)","description":"\u003cp\u003eThe Sierra timer base 18-99414 is a replacement ignition timing component engineered for Johnson\/Evinrude 4 cylinder Cross Flow outboard engines built without Quick Start. The timer base controls ignition timing advance as the throttle is opened, working in conjunction with the engine's ignition system to deliver correct spark timing across the RPM range. Because the timer base is a wear item subject to constant mechanical actuation from the throttle linkage, it is a common source of hard starting, rough idle, misfiring, or poor acceleration when it wears out or its contacts degrade.\u003c\/p\u003e\u003cp\u003eThis timer base is designed as a direct-fit replacement for the original Johnson\/Evinrude timer base on covered 4 cylinder Cross Flow powerheads, restoring correct ignition timing behavior without modification to the surrounding ignition or throttle linkage components. It is intended for outboards ranging from 65 HP through 140 HP built in the 1985-1998 model years that use the Cross Flow 4 cylinder block without the Quick Start feature.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-99414\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 8 x 5 x 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.7 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Johnson\/Evinrude 4 Cylinder Cross Flow engines without Quick Start\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower Range:\u003c\/strong\u003e 65, 80, 85, 88, 90, 100, 112, 115, 120, 125, 140 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Years:\u003c\/strong\u003e 1985-1998\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 763783, 583376, 582041, 581812, 583127, 583128\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282394455\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude 4 Cylinder Cross Flow engines without Quick Start, 65-140 HP, 1985-1998\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e763783\u003c\/li\u003e\n\u003cli\u003e583376\u003c\/li\u003e\n\u003cli\u003e582041\u003c\/li\u003e\n\u003cli\u003e581812\u003c\/li\u003e\n\u003cli\u003e583127\u003c\/li\u003e\n\u003cli\u003e583128\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-99414 timer base fit?\u003c\/strong\u003e The Sierra 18-99414 timer base fits Johnson\/Evinrude 4 cylinder Cross Flow outboard engines without Quick Start, covering 65, 80, 85, 88, 90, 100, 112, 115, 120, 125, and 140 HP models from 1985-1998.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this timer base work on a Quick Start equipped engine?\u003c\/strong\u003e No. The 18-99414 timer base is designed for Johnson\/Evinrude 4 cylinder Cross Flow engines without Quick Start; engines equipped with Quick Start require a different timer base.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does 18-99414 replace?\u003c\/strong\u003e The Sierra 18-99414 timer base replaces OEM Johnson\/Evinrude part numbers 763783, 583376, 582041, 581812, 583127, and 583128.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does this timer base weigh?\u003c\/strong\u003e The Sierra 18-99414 timer base weighs 0.7 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-99414 timer base?\u003c\/strong\u003e The 18-99414 timer base measures 8 x 5 x 3 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate a worn timer base needs replacement?\u003c\/strong\u003e Hard starting, rough idle, misfiring, and poor acceleration on a Johnson\/Evinrude 4 cylinder Cross Flow outboard can indicate a worn timer base like the one replaced by Sierra 18-99414.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99414 a direct replacement for the factory timer base?\u003c\/strong\u003e Yes, the 18-99414 is a direct-fit replacement for the original Johnson\/Evinrude timer base on covered 4 cylinder Cross Flow engines, requiring no modification to the throttle linkage or ignition system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the timer base include mounting hardware?\u003c\/strong\u003e The dossier for the Sierra 18-99414 timer base does not specify included mounting hardware; it is sold as the timer base component.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat horsepower range does this timer base cover?\u003c\/strong\u003e This timer base covers 65 through 140 HP Johnson\/Evinrude 4 cylinder Cross Flow outboards, specifically 65, 80, 85, 88, 90, 100, 112, 115, 120, 125, and 140 HP.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat model years is the 18-99414 timer base compatible with?\u003c\/strong\u003e The 18-99414 timer base is compatible with 1985-1998 model year Johnson\/Evinrude 4 cylinder Cross Flow engines without Quick Start.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this part specific to Johnson or Evinrude, or both?\u003c\/strong\u003e It fits both Johnson and Evinrude branded 4 cylinder Cross Flow outboards without Quick Start within the listed HP and model year range, as both brands shared this engine platform.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988443214043,"sku":"SIE-18-99414","price":281.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-133-3379_lg__26176.1753710293.500.750.jpg?v=1785188064","url":"https:\/\/www.goodvibesmarina.com\/products\/timer-base-for-johnson-evinrude-4-cyl-cross-flow-65-140-hp-1985-1998-replaces-oem-763783-sierra-18-99414","provider":"Good Vibes Marina","version":"1.0","type":"link"}