Moose Offroad Carburetor Repair Kit 1003-0798 - Yamaha YZ250 2001-2026 / YZ250X 2016-2026

Product Description

The Moose Offroad Carburetor Repair Kit provides a complete hardware refresh for your two-stroke fuel system. Designed specifically for the Keihin carburetor on Yamaha YZ250 and YZ250X machines, this kit eliminates air leaks, erratic idling, and fuel overflow caused by hardened gaskets and worn internal components. Utilizing NBR rubber material on all critical seals, it delivers lasting resilience against pump fuel additives while restoring crisp throttle response across every RPM range.

Modern pump fuel contains ethanol that deteriorates standard rubber over time, degrading float needle tips, swelling bowl gaskets, and clogging passages. This rebuild package includes OEM jet sizes along with replacement needles, mixture screws, float valve assemblies, and hardware to return your carburetor to true baseline settings. It provides the exact components required to refresh worn internal metering parts without having to hunt down individual pieces.

Top Features: Moose Offroad Carburetor Kit

• NBR rubber material is utilized on all O-rings and rubber gaskets to resist degradation from ethanol-blended fuels.
• Includes OEM jet sizes to restore baseline factory fuel calibration on Yamaha two-stroke models.
• Comprehensive package includes all necessary O-rings, gaskets, jets, needle, mixture screw, float bowl screws, and float valve needle and seat.
• Engineered specifically for Keihin carburetors fitted to Yamaha YZ250 and YZ250X machines.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: Does this kit include stock-sized jets for my YZ250?
A: Yes, this kit includes OEM jet sizes to restore factory baseline carburetor specifications.

Q: Will the rubber gaskets and O-rings hold up against pump gas with ethanol?
A: Yes, all O-rings and rubber gaskets in this kit are made from NBR rubber, which has resistance to ethanol fuel degradation.

Q: Does this kit come with new float bowl screws?
A: Yes, the kit includes replacement float bowl screws alongside the internal jets, needle, and float valve seat.

Expert Pro-Tip: When installing the new float valve needle and seat assembly, make sure to thoroughly clean the carburetor body passage with contact cleaner and compressed air before pressing the seat into place. Always verify your float height to factory service manual specifications using a float level gauge before bolting the bowl back on, as even minor float level discrepancies will alter your low-end jetting and cause overflow issues.

Recommended Pairings:

• Yamaha YZ250 / YZ250X Performance Parts & Upgrades
• Yamaha 2-Stroke Performance Parts
• Motorcycle Chemicals Performance Parts

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