The Husqvarna 577754801 Choke is a genuine OEM component designed for the FS520, FS524, and FS513 floor saws. As a direct OEM replacement, it meets Husqvarna's original engineering standards, ensuring the choke operates exactly as intended in these flat saw applications. DHS Equipment supplies this part to help keep your equipment running through demanding concrete cutting schedules. Cross-reference part number 577754801 against your parts diagram to confirm fitment before ordering.
Key Features
- OEM Fuel System Integrity — Manufactured to Husqvarna's original air-fuel ratio specifications, this choke delivers the correct restriction for reliable cold-start enrichment without the guesswork of non-OEM alternatives.
- Drop-In Replacement — Engineered to match the original mounting configuration of the FS520, FS524, and FS513 carburetors, allowing straightforward installation without adapting or reworking the choke linkage.
- Confirmed Floor Saw Fitment — Verified compatibility with the FS520, FS524, and FS513 floor saws, covering common walk-behind flat saw configurations used in slab and pavement cutting.
- Cold-Start Performance Restored — A worn or stuck choke forces hard starting, rough warm-up, and inconsistent engine behavior under load. Replacing it with this OEM part brings the engine back to clean, predictable start cycles.
- Fuel System Safety — A correctly functioning choke prevents over-fueling and raw fuel draw through the intake, reducing risk of flooding and uncontrolled combustion events during start-up on a job site.
The choke is a critical component in the carburetor's cold-start circuit, temporarily restricting airflow to create the richer fuel mixture an engine needs when starting from cold. On floor saws like the FS520, FS524, and FS513, a properly functioning choke means faster starts and smoother warm-up so the saw reaches cutting speed without stalling. When the choke becomes worn, stuck open, or seized, the engine struggles to start in cool conditions and may run erratically until fully warmed — costing time and increasing wear on other engine components.
Part Details
| Part Number | 577754801 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Choke |
Compatibility & Fitment
| Name | Model |
|---|---|
| Floor Saw | FS520 |
| Floor Saw | FS524 |
| Floor Saw | FS513 |
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.
