{"product_id":"ms250-air-filter-kit-for-stihl","title":"MS250 Air Filter Tune-Up Kit for Stihl 021 023 025 MS210 MS230 MS250C MS210C 230 210 Chainsaw","description":"\u003ch2\u003eMS250 \/ MS230 \/ MS210 Air Filter \u0026amp; Tune-Up Kit\u003c\/h2\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Efficiency Pleated Media:\u003c\/strong\u003e The air filter features premium pleated paper designed to maximize surface area, providing superior dust-holding capacity compared to standard foam filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision-Molded Seal:\u003c\/strong\u003e Engineered with a high-grade rubberized gasket to ensure a 100% vacuum seal against the carburetor intake, preventing fine sawdust from entering the engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeighted Fuel Filtration:\u003c\/strong\u003e Includes a heavy-duty fuel filter with a metal weight, ensuring the pickup remains submerged in fuel regardless of the chainsaw's orientation during steep cuts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Ignition:\u003c\/strong\u003e Comes with a factory-gapped spark plug designed to handle the high-heat cycles of 40cc-45cc 2-stroke engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-In-One Maintenance:\u003c\/strong\u003e A comprehensive kit that addresses the three most critical wear items for maintaining engine compression, fuel delivery, and airflow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eReplaces \/ Cross-Reference Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStihl Air Filter:\u003c\/strong\u003e 1123 120 1613, 1123 120 1612, 1123 160 1650\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStihl Fuel Filter:\u003c\/strong\u003e 0000 350 3500\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStihl Spark Plug:\u003c\/strong\u003e 0000 400 7000 (NGK BPMR7A equivalent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility \u0026amp; Fitment\u003c\/h3\u003e\n\u003cp\u003eThis kit is designed specifically for the Stihl 1123 engine platform. Key compatible models include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStihl MS Series:\u003c\/strong\u003e MS210, MS210C, MS230, MS230C, MS250, MS250C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStihl 0-Series:\u003c\/strong\u003e 021, 023, 025.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e This is the \u003cstrong\u003ecurved-top\u003c\/strong\u003e pleated filter style. Please verify your air filter cover shape, as some early models may use a flat foam pad.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoss of Power:\u003c\/strong\u003e The saw feels \"lazy\" or won't reach full RPM under load, often caused by a restricted air filter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBogging in Vertical Cuts:\u003c\/strong\u003e The saw dies or sputters when turned on its side, indicating the fuel filter is clogged or the fuel line is collapsing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncreased Fuel Consumption:\u003c\/strong\u003e A dirty air filter creates a \"rich\" condition, sucking in too much fuel and not enough air.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Misfires:\u003c\/strong\u003e Rhythmic stuttering or difficulty starting, typically solved by the included spark plug replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisible Debris:\u003c\/strong\u003e If the pleated filter looks dark or \"fuzzy\" with oil and sawdust, it cannot be effectively cleaned and must be replaced.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Bellows Test:\u003c\/strong\u003e When installing the air filter, ensure the \"tabs\" on the base of the filter snap firmly into the air box. A loose filter will allow sawdust to bypass the media and score your cylinder walls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Line Hook:\u003c\/strong\u003e Use a piece of bent wire or a specialized fuel line tool to fish the fuel filter out of the tank. Be careful not to nick or cut the rubber fuel line during this process.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDon't Blow Inward:\u003c\/strong\u003e Never use compressed air to clean a paper filter while it is attached to the saw, as this can force dirt directly into the carburetor throat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck the Case:\u003c\/strong\u003e While the air filter is off, use a damp rag to clean the surrounding plastic housing to prevent debris from falling into the intake when you seat the new filter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpark Plug Gap:\u003c\/strong\u003e Double-check the spark plug gap (0.5 mm \/ 0.020\") before installation to ensure the strongest possible spark.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BlueStarsParts","offers":[{"title":"Default Title","offer_id":45369698255037,"sku":"AZ00583047","price":17.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2576\/7548\/files\/AZ00583047_1.jpg?v=1766028986","url":"https:\/\/bluestarspartstrend.com\/products\/ms250-air-filter-kit-for-stihl","provider":"BlueStars Parts","version":"1.0","type":"link"}