Description
If your old Ford N-series tractor is running rough, surging, or just won’t hold a steady idle, a worn main adjusting needle might be the culprit. This little part controls how much fuel gets mixed with air in your carburetor’s main circuit—the one that feeds fuel when you’re working under load. When it’s worn or damaged, you’ll notice it most when you’re pulling hard or trying to maintain steady RPMs.
What You’re Getting
- Precise fuel metering that restores smooth operation under load
- Quality TISCO construction built to handle years of adjustment and vibration
- Direct OEM replacement that fits Marvel Schebler carburetors perfectly
- Proper taper and threading for reliable sealing and accurate fuel control
Built for Real Farm Work
These needles work with the Marvel Schebler carburetors found on Ford 9N, 2N, and 8N tractors, the workhorses that handled everything from cultivating and mowing to belt work around the farmstead. Whether you’re using your N-series for serious farming, hobby work, or restoration, having the carburetor running right makes all the difference in how the tractor performs.
Made to Last
Farm equipment sits outside, gets vibrated to death, and runs in dusty conditions—and carburetor needles take the brunt of it. This replacement is machined to the same specs as the original, with the right taper and materials to handle constant adjustments and the inevitable dirt that finds its way into fuel systems.
Good to Know
Installing this needle is part of a carburetor rebuild or cleaning, so plan on having a carb kit handy too. The adjustment is critical—too rich and you’ll waste fuel and foul plugs, too lean and you’ll run hot and lose power. Start with the needle seated gently, then back it out about 1.5 turns as a baseline for fine-tuning.
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