HardDrive Mixture Screw Kit for Keihin CV Carburetors – Mixture Screw & Repack Kit

OVERVIEW

The HardDrive Mixture Screw Kit restores precise air-fuel ratio control by replacing worn or stripped idle mixture screws on Keihin CV carburetors. Engineered as a dedicated carburetor service component, this kit supplies both the replacement screw and necessary repack seals to maintain steady fuel delivery. Constructed for repeated service cycles, the assembly delivers predictable torque resistance while keeping idle adjustments accurate under engine vibration.

ENGINEERING & PERFORMANCE

A degraded mixture screw passage typically causes lean stalling and erratic idling, which this kit corrects through direct OEM-style replacement. The included repack components rebuild the fuel metering canal to factory specifications, ensuring a secure seal that eliminates vacuum leaks while preserving consistent flow characteristics. Built to withstand repeated disassembly, the hardware maintains predictable torque resistance and stays firmly seated under vibration, keeping idle tuning accurate over time.

KEY FEATURES

• Direct replacement mixture screw tailored specifically for Keihin CV carburetors
• Complete repack kit includes fresh sealing elements for reliable passage isolation
• Restores accurate idle mixture adjustment after extended wear or carbon buildup
• High-quality construction built to withstand repeated disassembly and reassembly
• Supports comprehensive carburetor refresh workflows and routine maintenance schedules
• Maintains stable fuel-pressure sealing during low-RPM cruising and stop-and-go conditions

TECHNICAL SPECIFICATIONS

• Brand: HardDrive
• Part Name: Mixture Screw Kit for Keihin CV Carburetors
• Part Type: Carburetor hardware (mixture screw & repack kit)
• Material: Precision-machined alloy with reinforced sealing components
• Compatible Trims: Keihin CV carburetors (verify exact carb model before purchase)

FITMENT

• Keihin CV Carburetors (Verify exact carb model before purchase.)

WHY HARLEY RIDERS CHOOSE THIS

Riders prefer this kit because a cracked or stripped mixture screw permanently compromises idle calibration, leaving many owners unable to tune their carburetor back to peak performance. By supplying both the precision-machined screw and fresh repack seals, it guarantees a tight, leak-free passage that keeps fuel-air mixing stable across all riding conditions. The straightforward swap minimizes downtime during carburetor repairs, delivering smoother throttle response and more dependable power delivery without searching for obsolete hardware.