The Husqvarna 503891601 Spring is a genuine OEM replacement built for K650, K700, and K650CutnBreak power cutters. As a direct factory replacement, this spring delivers the correct tension, travel, and return characteristics specified for these machines — ensuring the assembly it serves behaves exactly as intended. DHS Equipment supplies this part to help keep your equipment running at full capacity. Cross-reference part number 503891601 against your parts diagram to confirm the correct application before ordering.
Key Features
- Correct Spring Rate — manufactured to Husqvarna's OEM tension specification, so the component returns and engages with the same force as the original, preventing over-travel or sluggish response
- Drop-In Replacement — matches the original mounting points and dimensions of the K650, K700, and K650CutnBreak power cutters, installing without modification to the surrounding assembly
- Broad Power Cutter Compatibility — a single part number covers the K650, K700, and K650CutnBreak, making it a practical fit across multiple machines in a fleet
- Restored Mechanical Function — a fatigued or broken spring causes inconsistent engagement, erratic response, or complete loss of function in the assembly it controls; replacing it with this genuine part restores predictable, repeatable operation
- Genuine Husqvarna OEM Quality — produced to the same material and heat-treatment standards as the original, providing the fatigue resistance and cycle life expected from a factory component
A spring in a power cutter controls the return, tension, or engagement of a mechanical assembly — whether that is a throttle, guard, clutch linkage, or similar moving component. When a spring weakens, deforms, or breaks, the assembly it governs loses consistent travel and return, which can result in unpredictable tool behavior or prevent the machine from operating correctly. Replacing a worn spring with a correctly rated OEM component restores the precise mechanical response the system was designed around, keeping the cutter performing safely and reliably on the job.
Part Details
| Part Number | 503891601 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Spring |
Compatibility & Fitment
| Name | Model |
|---|---|
| Power Cutter | K650 |
| Power Cutter | K700 |
| Power Cutter | K650CutnBreak |
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.
