Description
Overview:
This Genuine Husqvarna clutch spring (OEM 503 74 43‐01) is a small but critical part of the centrifugal clutch assembly used on many Husqvarna disc cutters and saws, including the K750 and K760. Made from tempered spring steel for high fatigue resistance, it controls clutch engagement and disengagement so the machine idles without driving the blade and accelerates cleanly under load. Replacing a tired or broken spring restores consistent take‐up, reduces slip, and helps protect the clutch drum, shoes and drive components. Designed for a precise fit, it installs directly in place of the original part and supports reliable day‐to‐day operation in demanding construction, landscaping and rescue tasks.
Key Features:
- Genuine Husqvarna part for perfect compatibility and correct engagement characteristics
- OEM reference 503 74 43‐01 for accurate identification and fit
- Durable spring steel construction resists heat, vibration and repeated cycling
- Restores smooth idle and positive drive under acceleration, reducing clutch slip
- Helps prevent premature wear to clutch shoes, drum and belt components
- Stable performance across typical cutting temperatures and duty cycles
- Direct replacement with no modifications needed, keeping downtime low
- Suitable for professional and DIY maintenance to keep machines productive
Typical Applications:
Routine maintenance or repair of Husqvarna disc cutters and saws where clutch symptoms appear, such as creeping at idle, delayed engagement, or loss of drive. Ideal during clutch shoe or drum replacement, or as preventative maintenance before major jobs in construction cutting, concrete and masonry work, roadwork, utilities, landscaping, forestry and emergency/rescue operations.
Also known as:
Clutch tension spring, centrifugal clutch spring, drive clutch spring, clutch return spring, cut‐off saw clutch spring, disc cutter clutch spring, chainsaw clutch spring, OEM clutch spring 503744301.
Fits Models:
265RX, 268, 268K, 272K, 272XP, 362XP, 371K, 371XP, 375K, 565, 570, 570II, 572XP, 572XPG, 576XP, 61, K650 Cut-n-Break, K750, K760, K760 Cut-n-Break, K760 Cut-n-Break II, K760 II, K760 Rescue, K770, K770 Dry Cut, K770 OilGuard, K770 Rescue, K770 VAC
Alternate Part Numbers:
503 74 43-01, 503744301
Product Specifications
| L&S Part No. | 503 74 43 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503744301 |
| Unit of Sale | 1 |
| Applications | 265RX, 268, 268K, 272K, 272XP, 362XP, 371K, 371XP, 375K, 565, 570, 570II, 572XP, 572XPG, 576XP, 61, K650 Cut-n-Break, K650Cut-n-Break, K750, K760, K760 Cut-n-Break, K760 Cut-n-Break II, K760 II, K760 Rescue, K760Cut-n-Break, K760Cut-n-BreakII, K760II, K760Rescue, K770, K770 Dry Cut, K770 OilGuard, K770 Rescue, K770 VAC, K770DryCut, K770OilGuard, K770Rescue, K770VAC |
| Machine Type | Disc Cutters |
| Fits Brands | Husqvarna |
| Fits Models | K750 | K760 | K770 | K650 Cut-n-Break | K760 Cut-n-Break | K760 RESCUE | 268 | 362XP | 371XP | 565 | 570 | 570II | 572XP, 572XPG | 576XP | 61 | 268K | 272K | 371K | 265RX | K760 Cut-n-Break II | K760 II | K770 Dry Cut | K770 OilGuard | K770 Rescue | K770 SmartGuard | K770 VAC | 375K |
