Husqvarna 503878001 Throttle Lock

Product Description

The HUSQVARNA 503878001 is a throttle lock component designed to hold the throttle in a fixed position during operation. This small mechanical part is a common wear and replacement item on Husqvarna-brand outdoor power equipment. It controls throttle engagement, helping operators maintain consistent engine speed without continuous trigger pressure. Licensed technicians and experienced equipment service professionals typically handle throttle mechanism repairs as part of routine carburetor and engine control service.

This throttle lock is suited for use on Husqvarna lawn and garden equipment where the original throttle lock has worn, cracked, or broken. It is intended as a direct OEM replacement to restore proper throttle function. Equipment operators and small engine technicians servicing Husqvarna units will find this part a straightforward swap during trigger assembly service.

Key Features

• OEM Husqvarna part number 503878001 ensures correct fitment
• Replaces worn or damaged throttle lock components
• Designed for throttle trigger assemblies on Husqvarna outdoor power equipment
• Small, lightweight component for straightforward parts replacement

Compatibility

Designed as an OEM replacement throttle lock for Husqvarna lawn and garden power equipment. Consult the Husqvarna parts diagram for your specific model to confirm fitment before ordering.

Installation Notes

Installation should be performed by a qualified small engine technician or experienced equipment service professional. Always disengage the ignition and remove the spark plug wire before disassembling the throttle trigger housing. Refer to the equipment service manual for disassembly sequence and reassembly procedures. Do not operate equipment with a damaged or improperly seated throttle lock.

Technical Specifications

• Part Type: Throttle Lock

Standard Information

• Brand: HUSQVARNA
• Manufacturer Part Number: 503878001