{"product_id":"yamaha-jet-pilot-42-5-7cu-e4142-42-a0","title":"Yamaha - Jet, pilot (#42.5) - 7CU-E4142-42-A0","description":"\u003ch2 data-section-id=\"1kfw6my\" data-start=\"0\" data-end=\"82\"\u003eYamaha - Pilot Jet #42.5 - Carburetor Fuel Metering Component - 7CU-E4142-42-A0\u003c\/h2\u003e\n\u003chr data-start=\"84\" data-end=\"87\"\u003e\n\u003ch2 data-section-id=\"rzkdgm\" data-start=\"89\" data-end=\"100\"\u003eOverview\u003c\/h2\u003e\n\u003cp data-start=\"101\" data-end=\"468\"\u003ePilot jets are one of the first things I look at when an engine won’t idle clean or feels off right off idle. It doesn’t take much—just a little buildup or the wrong size—and the whole low-speed range suffers. I’ve brought plenty of engines back to life just by swapping in the correct jet. When it’s right, the idle smooths out and throttle pickup feels crisp again.\u003c\/p\u003e\n\u003chr data-start=\"470\" data-end=\"473\"\u003e\n\u003ch2 data-section-id=\"1ma7m6t\" data-start=\"475\" data-end=\"490\"\u003eKey Features\u003c\/h2\u003e\n\u003cp data-start=\"491\" data-end=\"897\"\u003e• \u003cstrong data-start=\"493\" data-end=\"519\"\u003eLow-Speed Fuel Control\u003c\/strong\u003e – Regulates fuel flow at idle and low throttle for smooth operation.\u003cbr data-start=\"588\" data-end=\"591\"\u003e• \u003cstrong data-start=\"593\" data-end=\"617\"\u003ePrecision Jet Sizing\u003c\/strong\u003e – Calibrated at 42.5 for accurate fuel-air mixture in carbureted systems.\u003cbr data-start=\"691\" data-end=\"694\"\u003e• \u003cstrong data-start=\"696\" data-end=\"716\"\u003eOEM Threaded Fit\u003c\/strong\u003e – Designed for proper installation and secure seating in the carburetor.\u003cbr data-start=\"789\" data-end=\"792\"\u003e• \u003cstrong data-start=\"794\" data-end=\"821\"\u003eImproved Idle Stability\u003c\/strong\u003e – Helps eliminate stalling, hesitation, and uneven low-speed performance.\u003c\/p\u003e\n\u003chr data-start=\"899\" data-end=\"902\"\u003e\n\u003ch2 data-section-id=\"1qx5o2j\" data-start=\"904\" data-end=\"934\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/h2\u003e\n\u003cp data-start=\"935\" data-end=\"1174\"\u003eDesigned for Yamaha outboard engines equipped with carbureted fuel systems that utilize a pilot jet for low-speed fuel control. Commonly used across a range of Yamaha outboards where smooth idle and clean throttle transition are essential.\u003c\/p\u003e\n\u003chr data-start=\"1176\" data-end=\"1179\"\u003e\n\u003ch2 data-section-id=\"1hryhf7\" data-start=\"1181\" data-end=\"1187\"\u003eFAQ\u003c\/h2\u003e\n\u003cp data-start=\"1189\" data-end=\"1332\"\u003e\u003cstrong data-start=\"1189\" data-end=\"1237\"\u003eQ: What are signs this pilot jet is clogged?\u003c\/strong\u003e\u003cbr data-start=\"1237\" data-end=\"1240\"\u003eA: Rough idle, stalling, or hesitation when you first throttle up are the most common signs.\u003c\/p\u003e\n\u003cp data-start=\"1334\" data-end=\"1481\"\u003e\u003cstrong data-start=\"1334\" data-end=\"1385\"\u003eQ: Can I clean the jet instead of replacing it?\u003c\/strong\u003e\u003cbr data-start=\"1385\" data-end=\"1388\"\u003eA: You can try, but if performance doesn’t improve, replacement is usually the better option.\u003c\/p\u003e\n\u003cp data-start=\"1483\" data-end=\"1625\"\u003e\u003cstrong data-start=\"1483\" data-end=\"1539\"\u003eQ: Does using the wrong jet size affect performance?\u003c\/strong\u003e\u003cbr data-start=\"1539\" data-end=\"1542\"\u003eA: Yes, it can throw off the fuel mixture and cause poor idle or sluggish response.\u003c\/p\u003e\n\u003cp data-start=\"1627\" data-end=\"1760\"\u003e\u003cstrong data-start=\"1627\" data-end=\"1673\"\u003eQ: How does fuel quality impact this part?\u003c\/strong\u003e\u003cbr data-start=\"1673\" data-end=\"1676\"\u003eA: Dirty or old fuel can clog the jet quickly, especially without proper filtration.\u003c\/p\u003e\n\u003cp data-start=\"1762\" data-end=\"1915\"\u003e\u003cstrong data-start=\"1762\" data-end=\"1795\"\u003eQ: Is installation difficult?\u003c\/strong\u003e\u003cbr data-start=\"1795\" data-end=\"1798\"\u003eA: It’s straightforward if you’re already working in the carburetor—just install it carefully and don’t over-tighten.\u003c\/p\u003e","brand":"Yamaha","offers":[{"title":"Default Title","offer_id":46936417894691,"sku":"7CU-E4142-42-A0","price":32.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV266256.jpg?v=1698797498","url":"https:\/\/partsvu.com\/en-ca\/products\/yamaha-jet-pilot-42-5-7cu-e4142-42-a0","provider":"PartsVu","version":"1.0","type":"link"}