{"product_id":"tillotson-hw33a-metering-diaphragm","title":"(10) Tillotson HW-33A Metering Diaphragm","description":"\u003cp\u003eThe \u003cstrong\u003eTillotson HW-33A metering diaphragm\u003c\/strong\u003e is the fuel metering diaphragm located in the bottom cover of the Tillotson HW-33A carburetor used on the IAME KA100 and X30 engines. This diaphragm flexes in response to fuel demand, actuating the inlet needle to regulate fuel flow into the metering chamber. It is the primary control element that determines how much fuel the carburetor delivers at any given throttle position and engine load. \u003c\/p\u003e\n\u003cp\u003eMetering diaphragms lose their flexibility over time from fuel exposure, heat cycling, and age. A stiff or degraded diaphragm causes inconsistent fuel delivery — typically manifesting as a lean condition under load, poor throttle response, or inability to maintain consistent mixture across a race distance. Most engine builders recommend replacing the metering diaphragm at the start of every season or every 10-15 race weekends.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 diaphragm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFresh diaphragms restore crisp fuel metering. One of the most impactful carb maintenance items you can replace. Available at CMC Karting.\u003c\/p\u003e","brand":"IAME USA","offers":[{"title":"Default Title","offer_id":47883284775133,"sku":"TI-237-600X","price":5.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMCKA10010TILLOTTSONCARBURETORHW33A.png?v=1778166806","url":"https:\/\/cmckarting.com\/products\/tillotson-hw33a-metering-diaphragm","provider":"CMC Karting","version":"1.0","type":"link"}