{"product_id":"trigger-assembly-for-mercury-3-cylinder-outboards-replaces-oem-96455a8-68162a6-sierra-18-5797-1","title":"Sierra Trigger Assembly 18-5797-1 for Mercury 50-70 HP 3 Cylinder Outboards","description":"\u003cp\u003eThe Sierra Trigger Assembly, part number 18-5797-1, is an ignition trigger component engineered for Mercury outboard motors within the 50 to 70 HP range on 3 cylinder powerheads. The trigger assembly works within the ignition system to signal spark timing to the engine's electronic ignition components, and a worn or failing trigger can cause hard starting, misfiring, or a no-spark condition. This assembly is built to match the fit and function of the original Mercury trigger unit on the applicable engine serial number ranges, allowing for a direct in-place replacement without modification.\u003c\/p\u003e\u003cp\u003eThis part is cataloged under Mercury Outboard Stators \u0026amp; Triggers, the category Sierra uses for ignition trigger and stator replacement components. It is intended for technicians and boat owners replacing a failed or deteriorated trigger assembly as part of an ignition system repair or a preventive maintenance overhaul on the covered Mercury 3 cylinder outboards.\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 18-5797-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Trigger Assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Stators \u0026amp; Triggers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282392505\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.3 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e Mercury 50 HP, 60 HP, and 70 HP, 3 cylinder outboards, within the applicable engine serial number ranges\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury 50 HP, 3 cylinder, serial numbers 6428681 to D000749\u003c\/li\u003e\n\u003cli\u003eMercury 60 HP, 3 cylinder, serial numbers 6428681 to D000749\u003c\/li\u003e\n\u003cli\u003eMercury 70 HP, 3 cylinder, serial numbers 4571652 to A996141\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-5797-1 trigger assembly used for?\u003c\/strong\u003e It is an ignition trigger assembly for Mercury outboard motors, used to signal spark timing to the engine's ignition system on applicable 3 cylinder models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich Mercury outboards does the 18-5797-1 trigger assembly fit?\u003c\/strong\u003e It fits Mercury 50 HP and 60 HP 3 cylinder outboards with engine serial numbers 6428681 to D000749, and Mercury 70 HP 3 cylinder outboards with engine serial numbers 4571652 to A996141.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5797-1 trigger assembly weigh?\u003c\/strong\u003e The Sierra trigger assembly, part number 18-5797-1, weighs 0.3 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5797-1 a direct replacement for the original Mercury trigger?\u003c\/strong\u003e Yes, the Sierra 18-5797-1 is built to match the fit and function of the original trigger assembly on the covered Mercury 3 cylinder outboards for direct installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate a failing trigger assembly on a Mercury outboard?\u003c\/strong\u003e Hard starting, engine misfiring, or a complete loss of spark can indicate a worn or failing trigger assembly like the 18-5797-1 needs replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5797-1 trigger assembly work on Mercury 80 HP outboards?\u003c\/strong\u003e No, based on the applicable fitment data the 18-5797-1 trigger assembly covers Mercury 50, 60, and 70 HP 3 cylinder outboards, not the 80 HP models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my Mercury outboard's engine serial number matches the 18-5797-1 fitment?\u003c\/strong\u003e Check your Mercury outboard's engine serial number against the ranges listed for this part: 6428681 to D000749 for 50 and 60 HP 3 cylinder models, or 4571652 to A996141 for 70 HP 3 cylinder models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat category of part is the Sierra 18-5797-1?\u003c\/strong\u003e The 18-5797-1 is cataloged as a Mercury Outboard Stator \u0026amp; Trigger component, specifically a trigger assembly for the ignition system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-5797-1 trigger assembly be installed by a boat owner or does it require a mechanic?\u003c\/strong\u003e The 18-5797-1 is a bolt-in ignition component; installation typically involves accessing the powerhead's ignition system, which many experienced boat owners and marine technicians can perform.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5797-1 an OEM Mercury part or an aftermarket replacement?\u003c\/strong\u003e The 18-5797-1 is a Sierra-branded aftermarket trigger assembly manufactured to fit the applicable Mercury 3 cylinder outboard engines.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988321972443,"sku":"SIE-18-5797-1","price":190.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5797_lg__10215.1558129689.500.750.jpg?v=1785329187","url":"https:\/\/www.goodvibesmarina.com\/products\/trigger-assembly-for-mercury-3-cylinder-outboards-replaces-oem-96455a8-68162a6-sierra-18-5797-1","provider":"Good Vibes Marina","version":"1.0","type":"link"}