The Husqvarna 590805901 Driving Pulley is a genuine OEM component designed for the K760, K760II, and K770 power cutters. Sourced directly from Husqvarna, this pulley is manufactured to the exact dimensional and material specifications of the original, ensuring correct belt engagement and power transfer from the engine to the cutting system. It is a direct replacement for the factory-installed unit on compatible K-series power cutters, and DHS Equipment supplies this part to help keep your equipment running at full capacity.
Key Features
- OEM-Matched Belt Groove Geometry — Manufactured to Husqvarna's original pulley profile, ensuring correct belt seating, tension distribution, and engagement across the full drive cycle.
- Direct Drop-In Replacement — Engineered to the same mounting dimensions and bore specifications as the original, allowing straightforward installation without modification to the drive assembly.
- Compatible with K760, K760II, and K770 Power Cutters — Verified fitment across these K-series handheld power cutters; cross-reference 590805901 against your parts diagram to confirm the correct application.
- Restored Drive System Performance — A worn or damaged driving pulley causes belt slippage, uneven power delivery, and accelerated belt wear; replacing it with this genuine part restores full, consistent power transfer to the cutting blade.
- Genuine Husqvarna Quality — Produced from materials meeting Husqvarna's construction-grade durability standards for high-cycle, high-vibration cutting environments.
The driving pulley is the primary rotating component that transfers engine power to the drive belt, which in turn drives the blade. It sits on the engine output shaft and must maintain precise rotational balance and groove geometry to keep the belt tracking correctly under load. When the pulley wears, develops groove damage, or runs out of true, belt slip and vibration increase — reducing cutting efficiency and placing additional stress on surrounding drive components. Replacing the pulley with a correctly specified part is essential to restoring smooth, full-power operation in K-series power cutters.
Part Details
| Part Number | 590805901 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Driving Pulley |
Compatibility & Fitment
| Name | Model |
|---|---|
| Power Cutter | K760II |
| Power Cutter | K760 |
| Power Cutter | K770 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
