Husqvarna 521557201 Limiter

Product Description

The HUSQVARNA 521557201 is a limiter component designed for use in Husqvarna outdoor power equipment. A limiter restricts adjustment range on fuel mixture screws, helping maintain engine settings within manufacturer-specified parameters. This part is typically installed or replaced by small-engine technicians and qualified service professionals during carburetor service or tune-up procedures. It is a direct-fit OEM-style replacement sourced through the Husqvarna parts and accessories line for lawn and garden equipment.

This limiter is applicable to Husqvarna lawn and garden power equipment that relies on a carbureted engine with adjustable fuel mixture screws. It is commonly encountered during carburetor rebuilds, emissions compliance service, or when restoring an engine to proper fuel delivery settings. Service technicians working on Husqvarna handheld or walk-behind equipment will encounter this component during standard carburetor maintenance.

Key Features

• OEM Husqvarna part ensuring correct fit and function
• Restricts fuel mixture screw adjustment to maintain engine specs
• Supports emissions compliance and proper air-fuel ratio control
• Direct replacement for worn or missing limiter caps

Compatibility

Designed as an OEM-style replacement limiter for Husqvarna lawn and garden power equipment with carbureted engines. Verify fitment against your equipment model number before ordering.

Installation Notes

Installation of this limiter should be performed by a qualified small-engine technician familiar with carburetor service procedures. Shut down the engine completely and allow it to cool before beginning any carburetor work. Removal or improper installation of limiter caps may affect emissions compliance on regulated equipment. Consult the equipment service manual for the correct procedure when servicing fuel mixture screws.

Technical Specifications

• Part Type: Limiter
• Application: Lawn and Garden Power Equipment

Standard Information

• Brand: HUSQVARNA
• Manufacturer Part Number: 521557201