Poulan 503896701 Metering Diaphragm

Product Description

The POULAN 503896701 is a metering diaphragm used in the carburetor assembly of Poulan-brand outdoor power equipment. The metering diaphragm regulates fuel delivery from the fuel chamber to the engine, maintaining consistent air-fuel mixture under varying load and throttle conditions. When this diaphragm hardens, tears, or loses flexibility, the engine may run rough, fail to start, or surge during operation. Replacement is a standard part of carburetor rebuild service performed by small-engine technicians and experienced equipment technicians.

This metering diaphragm is suited for carburetor service on Poulan outdoor power equipment including chain saws and handheld power tools that use a diaphragm-type carburetor. It is typically replaced during routine carburetor rebuilds or when diagnosing fuel delivery problems such as hard starting, lean running, or engine surge. No specific compatible model numbers are listed in the available product data.

Key Features

• OEM-referenced metering diaphragm designed for Poulan carburetor assemblies
• Restores proper fuel metering when original diaphragm hardens or fails
• Compatible with diaphragm-type carburetors found on Poulan handheld equipment
• Direct replacement part for carburetor rebuild service

Compatibility

Designed as an OEM-style replacement metering diaphragm for Poulan outdoor power equipment carburetors. Consult your equipment service manual or part diagram to confirm fitment before installation.

Installation Notes

Installation is typically performed by a small-engine technician familiar with diaphragm carburetor service. Disable the ignition and ensure all fuel is drained or isolated from the carburetor before disassembly. Handle the diaphragm carefully during installation to avoid stretching or creasing the material, which can cause immediate failure. Refer to the equipment service manual for correct reassembly sequence and torque guidance.

Technical Specifications

• Part Type: Metering Diaphragm
• Application: Carburetor Assembly

Standard Information

• Brand: POULAN
• Manufacturer Part Number: 503896701