Pilida Manual Fuel Pressure Regulator Kit 1–5 PSI with 1/4", 5/16", 3/8" Adapters — Zinc Alloy, Top Dial

Designed for small engines using facet-style fuel pumps, this zinc-alloy regulator gives you a simple mechanical way to control fuel delivery to carburetors. The regulator’s numbered top dial provides repeatable settings in a 1–5 psi range, and the kit ships with three common adapter sizes—1/4", 5/16" and 3/8"—so it fits a wide set of fuel line configurations. Built with anodic oxidation for corrosion resistance, the unit is intended for hobbyist and repair-shop installations where a reliable, adjustable pressure stop is needed.

How do I adjust the fuel pressure to match my carburetor?

Adjustment is done by turning the numbered dial on the regulator’s top. Rotate the dial until the desired psi marking aligns with the reference; each mark corresponds to an approximate pressure within the 1–5 psi range. Always confirm the setting with a separate inline fuel pressure gauge for precise tuning.

• Top-mounted numbered dial for 1–5 psi adjustments
• Turn slowly while engine is at idle or under low load
• Verify with an inline fuel pressure gauge after setting
• Small increments provide finer control for carburetor tuning

Which fuel lines and fittings are compatible with the kit?

The kit includes 1/4", 5/16" and 3/8" adapters to accommodate common fuel hose sizes used on small engines and classic cars with carburetors. Choose the adapter that matches the inner diameter of your fuel line or hose barb and secure it with a clamp. For threaded connections, apply thread seal tape to prevent leaks as recommended.

• Included adapters: 1/4", 5/16", 3/8"
• Works with facet-style fuel pumps and typical carburetor feed lines
• Use hose clamps for barb fittings and thread seal tape on threaded joints
• Check compatibility visually before final mounting

What construction and pressure limits should I be aware of?

The regulator body is made from zinc alloy and finished with anodic oxidation to resist corrosion and wear in fuel-system environments. It is engineered for a maximum safe input pressure of 7 psi; do not exceed this limit. Keeping inlet pressure below that cap helps protect internal components and ensures accurate regulation within the 1–5 psi adjustment window.

• Zinc-alloy body with anodic oxidation for durability
• Adjustable output range: 1–5 psi via top dial
• Maximum recommended input pressure: 7 psi
• Use thread seal tape on fittings to avoid leaks

How should I install and maintain the regulator for best results?

Mount the regulator near the carburetor on clean, fuel-resistant brackets or clamps so that hoses run without kinks. Before finalizing lines, install the appropriate adapter, tighten hose clamps, and wrap threaded connections with PTFE thread seal tape. Periodically inspect for corrosion, tighten fittings, and recheck pressure settings after initial break-in or if fuel delivery issues appear.

• Mount close to the carburetor with secure brackets
• Apply thread seal tape to threaded connections
• Check for leaks and re-torque fittings after first run
• Inspect periodically for corrosion or wear on fittings

Who is this for: The Pilida 9710 regulator kit suits mechanics, restorers, and small-engine enthusiasts who need a compact, user-adjustable fuel pressure solution for carburetted engines. It’s especially helpful when upgrading or replacing facet-style pumps, tuning a carburetor for consistent fuel flow, or converting between different fuel line sizes using the included adapters. If you require electronic control or higher-pressure fuel systems, consider a different regulator designed for those specifications.