Carburetor For Honda TRX300FW Fourtrax 300 350 Foreman 400 450 Rancher 350

Product Overview

A precision-engineered carburetor designed to restore factory fuel metering and throttle response, this carburetor for Honda Fourtrax and Foreman models replaces worn, clogged, or leaking original units. Delivering consistent fuel atomization for the TRX300FW and Rancher 350 series, the assembly eliminates hard starts and hesitation caused by internal bore corrosion. This carburetor for Honda 450 applications meets OEM dimensional tolerances for a true plug-and-play installation without manifold modification.

Key Features & Performance

• Pre-calibrated float bowl and jetting set to stock air-fuel specifications for immediate operation out of the box
• Machined brass pilot and main jets resist ethanol-induced corrosion and deliver stable idle control
• Fixed-venturi design maintains proper vacuum signal across the mid-range RPM band under heavy load
• Corrosion-resistant aluminum body with sealed vacuum piston prevents diaphragm dry-rot failure
• Includes pre-installed choke plunger and throttle cable linkage for mechanical slide actuation
• Flow-tested needle and seat assembly ensures consistent bowl fill without flooding during steep incline operation

Fitment & Compatibility

• Honda Fourtrax TRX300FW (1988-2000)
• Honda Fourtrax TRX300 2WD/4WD
• Honda Rancher 350 TRX350FE / FM / TE / TM (2000-2006)
• Honda Foreman 400 TRX400FW
• Honda Foreman 450 TRX450FE / FM / S / ES (1998-2004)

Common Uses

• Replacement of a gummed or varnished carburetor after prolonged off-season fuel storage
• Restoring throttle response on ATVs with off-idle stumble or wide-open-throttle sputter
• Direct swap when a torn accelerator pump diaphragm causes rich-running conditions
• Mounting on farm and ranch utility quads experiencing altitude-related air-fuel imbalance
• Refurbishment of hunting and trail rigs where float needle seepage causes fuel-fouled spark plugs

Technical Specifications

• Part Number(s): 16100-HM8-A63
• Throttle Bore Diameter: 32mm
• Body Material: Cast Aluminum Alloy with Clear Anodized Finish
• Choke Type: Cable-Operated Plunger Circuit
• Jet Material: Brass
• Fuel Inlet Configuration: Single Spigot, Side-Entry
• Slide Actuation: Direct Cable Linkage

Frequently Asked Questions

Q: Do I need to adjust the air-fuel mixture screw before installing this carburetor? A: The mixture screw is preset at the factory to a base setting, but a fine-tune adjustment is recommended once the engine reaches operating temperature to compensate for altitude and exhaust variations.

Q: Does this carburetor include the intake manifold boot and mounting hardware? A: This listing covers the carburetor assembly only; the intake manifold boot, gaskets, and mounting hardware are sold separately and must be torqued to factory service manual specifications.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.