{"product_id":"cdi-box-1yw-85540-20-00-for-1987-1988-yamaha-big-bear-yfm350fw-moto-4-yfm350er","title":"CDI Box 1YW-85540-20-00 For 1987 1988 Yamaha Big Bear YFM350FW Moto 4 YFM350ER","description":"\u003ch2\u003eCDI Box for Yamaha\u003c\/h2\u003e\u003cp\u003eThis CDI Box (OEM reference 1YW-85540-20-00) controls ignition timing for 1987 and 1988 Yamaha Big Bear and Moto 4 ATVs.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis CDI Box for Yamaha Big Bear YFM350FW and Moto 4 YFM350ER replaces a worn ignition unit to restore reliable spark. This CDI Box uses the OEM reference 1YW-85540-20-00 and is designed for 1987 and 1988 models. This CDI Box helps keep engine timing consistent during all riding conditions.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReplacement ignition module for Yamaha Big Bear YFM350FW and Moto 4 YFM350ER ATVs\u003c\/li\u003e\n\u003cli\u003eMatches OEM reference 1YW-85540-20-00 for proper fit and function\u003c\/li\u003e\n\u003cli\u003eProvides consistent ignition timing for reliable starting and running\u003c\/li\u003e\n\u003cli\u003eEngineered for 1987 and 1988 model year compatibility\u003c\/li\u003e\n\u003cli\u003eSolid-state construction resists vibration and heat for long service life\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha Big Bear YFM350FW, 1987\u003c\/li\u003e\n\u003cli\u003efor Yamaha Big Bear YFM350FW, 1988\u003c\/li\u003e\n\u003cli\u003efor Yamaha Moto 4 YFM350ER\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRestores ignition for 1987-1988 Yamaha Big Bear YFM350FW ATVs\u003c\/li\u003e\n\u003cli\u003eReplaces faulty CDI boxes for Yamaha Moto 4 YFM350ER quads\u003c\/li\u003e\n\u003cli\u003eUsed with a multimeter or spark tester to diagnose no-spark conditions\u003c\/li\u003e\n\u003cli\u003eKeeps utility and trail ATVs running smoothly under varied loads\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1YW-85540-20-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCDI Box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003efor Yamaha Big Bear YFM350FW (1987-1988), for Yamaha Moto 4 YFM350ER\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this CDI box for Yamaha machines? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, this replacement CDI box is designed for Yamaha Big Bear YFM350FW and Moto 4 YFM350ER applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What are common symptoms of a bad CDI box? \u003cstrong\u003eA:\u003c\/strong\u003e Common symptoms include no spark, intermittent stalling, or weak engine response. Test the ignition system before replacing the CDI box.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":45694394335318,"sku":"ZZ3J01849","price":36.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_7c8c3c1b-3806-4ead-b21c-81e391f35add.jpg?v=1789358176","url":"https:\/\/www.solidspare.com\/products\/cdi-box-1yw-85540-20-00-for-1987-1988-yamaha-big-bear-yfm350fw-moto-4-yfm350er","provider":"Solid Spare","version":"1.0","type":"link"}