{"product_id":"tillotson-hw33a-idle-mixture-screw","title":"(21A) Tillotson HW-33A Idle Mixture Screw","description":"\u003cp\u003eThe \u003cstrong\u003eTillotson HW-33A idle mixture screw\u003c\/strong\u003e controls the fuel\/air mixture at idle and low-speed operation on the HW-33A carburetor. Turning the screw clockwise leans the idle mixture; counterclockwise richens it. Proper idle mixture setting ensures smooth idle, clean off-idle transition, and consistent low-speed behavior.\u003c\/p\u003e\n\u003cp\u003eThe idle mixture screw tip (needle point) can become worn, bent, or damaged from repeated adjustment or over-tightening into its seat. A damaged needle tip prevents precise mixture control. Replace the screw if the tip shows any wear or deformation.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 screw\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNever bottom out a mixture screw forcefully — it damages the needle tip and the seat in the carb body. Available at CMC Karting.\u003c\/p\u003e","brand":"IAME USA","offers":[{"title":"Default Title","offer_id":47883285528797,"sku":"TI-43-1029","price":11.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMCKA10021ATILLOTTSONCARBURETORHW33A.png?v=1778166806","url":"https:\/\/cmckarting.com\/products\/tillotson-hw33a-idle-mixture-screw","provider":"CMC Karting","version":"1.0","type":"link"}