{"product_id":"husqvarna-504910605-piston-stop-small-engine","title":"Husqvarna 504910605 Piston Stop Small Engine","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HUSQVARNA 504910605 is a piston stop tool used during small engine service to lock the piston in place while a technician loosens or torques the flywheel nut or clutch assembly. By threading into the spark plug port, it prevents crankshaft rotation and protects internal engine components from damage during service procedures. This is a genuine OEM part sourced directly from Husqvarna, ensuring correct thread pitch and material fit for the application. Licensed small engine technicians and outdoor power equipment service shops are the primary installers of this tool.\u003c\/p\u003e\n\u003cp\u003eThe 504910605 is applicable to Husqvarna-powered handheld and walk-behind equipment that uses a compatible spark plug port thread size. Typical service scenarios include flywheel removal, clutch drum replacement, and starter assembly service on chainsaws, trimmers, and similar equipment. This tool is a standard item in small engine service kits for technicians who regularly work on Husqvarna product lines.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGenuine OEM Husqvarna part — ensures correct fit and thread compatibility\u003c\/li\u003e\n  \u003cli\u003eThreads into spark plug port to lock piston and prevent crankshaft rotation during service\u003c\/li\u003e\n  \u003cli\u003eProtects internal engine components from stress during flywheel or clutch removal\u003c\/li\u003e\n  \u003cli\u003eEssential service tool for small engine technicians working on Husqvarna equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a genuine OEM-replacement piston stop tool for Husqvarna small engines. Consult the Husqvarna parts lookup or equipment service manual to confirm spark plug port thread compatibility before use.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tool is installed by a qualified small engine technician as part of a controlled service procedure. Always disable the ignition and disconnect the spark plug wire before beginning any engine service work. Thread the piston stop into the spark plug port by hand until snug — do not overtighten. Remove the tool and reinstall the spark plug upon completion of service.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Type\u003c\/strong\u003e: Piston Stop Service Tool\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOEM Status\u003c\/strong\u003e: Genuine Husqvarna OEM Part\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HUSQVARNA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 504910605\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HUSQVARNA","offers":[{"title":"Default Title","offer_id":51203785130290,"sku":"504910605","price":16.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/307144748.png?v=1779705218","url":"https:\/\/voomisupply.com\/products\/husqvarna-504910605-piston-stop-small-engine","provider":"Voomi Supply","version":"1.0","type":"link"}