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Carburetor Main Load Adjusting Needle Assembly
John Deere Tractor 3010, 3020, 4000, 4010, 4020, 500
Zenith Carburetor 12506, 12510, 12879, 13320, 13429, 13430, 13924
2.417" overall length, 1/2" - 20 thread size (Please check your measurements)
Used to replace your Adjustable Load Nozzle - or to Eliminate the Electronic Solenoid
Please confirm your Carburetor Number on your Carburetor to ensure this is the Correct Carburetor Kit for your Carburetor on your respective Tractor model.