577601101 - Worm Wheel

The Husqvarna Worm Wheel (Part #: 577601101) is a genuine OEM gear component that plays a key role in the oil pump drive system of select Husqvarna chainsaws. This worm gear transfers motion from the crankshaft to the oil pump, ensuring consistent bar and chain lubrication during operation.

If your chainsaw is experiencing poor or no oil flow, a worn or stripped worm wheel is often the cause. Replacing it with this OEM part restores proper lubrication, helping extend the life of your bar and chain while improving overall cutting performance.

Compatible Equipment Examples:

• Husqvarna 450 Chainsaw

• Husqvarna 445 Chainsaw

• Husqvarna 440 Chainsaw

• Select Jonsered and Poulan models using the same oil pump design

Features:

• Genuine Husqvarna Worm Wheel

• Part #: 577601101

• Drives oil pump for proper bar and chain lubrication

• OEM fit ensures reliable performance and smooth operation

• Durable material for long service life

• Easy to install—ideal for routine service or repair

• Helps maintain cutting performance and prevent premature wear

Bee Green in Oakland is your trusted Husqvarna dealer, proudly serving the Bay Area with OEM chainsaw parts, expert repair advice, and maintenance solutions for pros and homeowners alike.