[Lifetime Warranty] 5021K Carburetor Diaphragm Gasket Kit - Pack of 6

5021K Carburetor Diaphragm Gasket Kit - Pack of 6

Key Features

• Package includes 6 complete carburetor rebuild sets.
• Each set contains one diaphragm/gasket assembly, one spring, and one spring cap.
• Designed to restore carburetor performance and prevent fuel leaks.
• Constructed from materials to resist deterioration from modern fuel blends.

Replaces / Cross-Reference Part Numbers

• Kit: 5021, 5021A, 5021B, 5021C, 5021D, 5021H, 5021K, 4157, 4168
• Diaphragm / Gasket: 270026, 272538, 272538S, 272637
• Spring: 692206, 260455
• Spring Cap: 690766, 221377
• Also replaces Oregon part number 49-037.

Compatibility & Fitment

• Fits most Briggs & Stratton engines from 2 hp to 5 hp.
• Designed for engines with a horizontal crankshaft.
• Commonly used on small engines for tillers, edgers, and other power equipment.

When to Replace

• Engine is difficult to start or will not start.
• Engine runs rough, surges, or stalls.
• Noticeable fuel leakage around the carburetor.
• Engine has a loss of power, especially under load.
• Diaphragm is stiff, cracked, or deformed from age or fuel exposure.

Installation Tips

• Thoroughly clean all carburetor surfaces before installing the new parts.
• Ensure the diaphragm and gasket are seated correctly according to the engine service manual.
• Tighten mounting screws evenly in a crisscross pattern to prevent warping.
• Avoid overtightening screws.
• Consider draining stale fuel from the tank and carburetor bowl before the repair.