{"product_id":"75306190-wt973-carburetor","title":"753-06190 Carburetor - Fits Troy Bilt TB22, TB21EC, TB22EC, TB32EC, Murray - Replaces WT-973","description":"\u003ch2\u003e753-06190 Carburetor\u003c\/h2\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Fuel-Air Mixing:\u003c\/strong\u003e Factory-calibrated to provide the optimal stoichiometric ratio for 25cc to 31cc 2-cycle engines, ensuring a stable idle and smooth transition to high RPMs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Cold-Start Reliability:\u003c\/strong\u003e Features an optimized internal primer circuit and high-response needle valves to reduce the number of pulls required to start your equipment after storage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEthanol-Resistant Components:\u003c\/strong\u003e Equipped with upgraded internal diaphragms and seals specifically engineered to resist the hardening and \"gumming\" caused by modern ethanol-blended fuels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Durability Alloy Casting:\u003c\/strong\u003e Manufactured from corrosion-resistant aluminum alloy to withstand the high-vibration and high-heat environment of handheld garden power tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Maintenance Kit:\u003c\/strong\u003e Designed as a direct \"drop-in\" replacement that typically includes the necessary gaskets and hardware to ensure a vacuum-tight seal during installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReplaces \/ Cross-Reference Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWalbro:\u003c\/strong\u003e WT-973, WT973, WT-973-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMTD \/ Troy-Bilt:\u003c\/strong\u003e 753-06190, 753-06190A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOther:\u003c\/strong\u003e 753-01690, 753-06190\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility \u0026amp; Fitment\u003c\/h3\u003e\n\u003cp\u003eThis carburetor is the primary fuel system component for a wide range of MTD-manufactured 2-cycle handheld tools. Key compatible models include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTroy-Bilt Trimmers:\u003c\/strong\u003e TB21EC, TB22, TB22EC, TB32EC, TB42EC, TB80EC, TB2040XP.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMurray Models:\u003c\/strong\u003e M2500, M2510 Brushcutters and String Trimmers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolens Models:\u003c\/strong\u003e BL110, BL160, BL425.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemington \u0026amp; Yard-Man:\u003c\/strong\u003e Various 25cc\/27cc 2-cycle trimmers utilizing the WT-973 style carburetor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine \"Bogging\" Under Load:\u003c\/strong\u003e The trimmer idles fine but stalls or loses power as soon as you pull the trigger to cut thick grass, indicating a clogged high-speed jet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStarts Only with Fluid:\u003c\/strong\u003e The engine will only fire if starting fluid is sprayed into the intake, confirming the carburetor is no longer drawing fuel from the tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Leaks:\u003c\/strong\u003e Gasoline drips from the air filter housing or the primer bulb area while the unit is off or running, which is a significant fire hazard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurging Idle:\u003c\/strong\u003e The engine RPM fluctuates wildly at idle (often called \"hunting\"), typically caused by an air leak at the carburetor gaskets or a lean fuel mixture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrittle Primer Bulb:\u003c\/strong\u003e The clear primer bulb has yellowed, cracked, or stays \"sunk in\" after being pressed, preventing the system from priming.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrain the Old Fuel:\u003c\/strong\u003e Before installing the new carburetor, completely drain the gas tank and replace the fuel filter. Old, \"varnished\" gas will immediately clog the fine internal screens of your new unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTake a Photo:\u003c\/strong\u003e Use your phone to take a clear picture of the throttle linkage and fuel line routing before you disconnect anything. This ensures you get the \"Z-bend\" on the throttle cable back into the correct hole.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Pulse Hole Rule:\u003c\/strong\u003e When placing the new gasket, ensure the tiny hole on the gasket aligns perfectly with the pulse hole on the engine block. If this is blocked, the internal fuel pump will not function.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHand-Tighten Only:\u003c\/strong\u003e Tighten the two mounting bolts evenly and firmly by hand. Using an impact driver can warp the carburetor flange or strip the plastic threads in the engine shroud.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurge the Air:\u003c\/strong\u003e Once installed, press the primer bulb 10 times until you see clear fuel (without air bubbles) returning through the return line to the tank before attempting the first start.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BlueStarsParts","offers":[{"title":"Default Title","offer_id":45371210498237,"sku":"AZ00138869","price":18.72,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2576\/7548\/files\/AZ00382922_1_af330e31-59e4-4178-bd12-601e2cd454b7.jpg?v=1762246288","url":"https:\/\/bluestarspartstrend.com\/products\/75306190-wt973-carburetor","provider":"BlueStars Parts","version":"1.0","type":"link"}