The Husqvarna 505777401 V-Belt is a genuine OEM drive belt designed for the FS5000D and FS5000 floor saws. As an authentic Husqvarna replacement, this belt is manufactured to the exact cross-section, length, and compound specification required for proper power transmission on these machines. Cross-reference part number 505777401 against your parts diagram to confirm fitment before ordering. DHS Equipment supplies this part to help keep your equipment running at full capability.
Key Features
- OEM Compound and Profile Match — Manufactured to Husqvarna's exact belt cross-section and durometer specification, ensuring correct grip and flex characteristics for floor saw drive systems.
- Correct Length and Tension — Sized to seat properly on the FS5000D and FS5000 pulleys without shimming or adjustment, maintaining the drive tension Husqvarna engineers specify.
- Confirmed Floor Saw Fitment — Verified for the FS5000D and FS5000 walk-behind floor saws; always cross-reference 505777401 with your machine's parts diagram for final confirmation.
- Restored Blade Drive Performance — A correctly tensioned belt transfers engine power to the blade shaft efficiently; a worn or slipping belt causes blade speed loss, overheating, and uneven cuts in concrete slabs.
- Genuine Husqvarna Part — Sourced directly from Husqvarna's OEM supply chain, so the profile, length, and construction match what the machine was built around — not an approximated substitute.
The V-Belt is the primary power transmission link between the engine and the blade drive system on a walk-behind floor saw. It transfers rotational energy from the drive pulley to the cutting head, maintaining the consistent blade speed needed for straight, controlled cuts through concrete and asphalt. When a V-Belt stretches, glazes, or cracks, it slips under load — causing blade speed to drop, generating excess heat at the pulleys, and ultimately stalling the cut. Replacing a worn belt promptly restores full drive efficiency and protects the pulleys from the accelerated wear that slipping contact causes.
Part Details
| Part Number | 505777401 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | V-Belt |
Compatibility & Fitment
| Name | Model |
|---|---|
| Floor Saw | FS5000D |
| Floor Saw | FS5000 |
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.
