Description
Overview:
This return spring is a genuine Husqvarna component for starter assemblies across selected chainsaws and brushcutters. Made from durable spring steel, it restores and maintains the correct rewind tension on the starter pulley so the pull cord retracts cleanly after each start. Engineered to OEM specification for a direct fit on models such as the Husqvarna 340 and 350, it supports reliable starting and consistent operation during regular use. The spring is supplied as a flat spiral for installation into the starter housing and is designed to withstand repeated cycling in demanding environments. Suitable for the Husqvarna machines listed below, this Genuine Part helps keep your equipment dependable by replacing a worn, weakened, or broken starter spring. Replaces Husqvarna 503 85 99-01.
Key Features:
- Genuine Husqvarna OEM part for accurate fit and function
- Spring steel construction for strength and fatigue resistance
- Provides correct rewind tension for smooth rope return
- Helps reduce starter slip, snagging, or slow retraction
- Wide model compatibility across saws, brushcutters, and pole pruners
- Compact spiral form for straightforward handling during fitting
- Easy to install with basic tools and standard workshop practices
- Direct replacement for 503 85 99-01 and 503859901
Typical Applications:
Replacement of a worn or broken starter rewind spring on Husqvarna chainsaws and brushcutters used for firewood cutting, felling, pruning, brush clearing, landscaping, and grounds maintenance. Ideal for routine service to restore reliable pull-start operation and consistent cord retraction.
Also known as:
Starter rewind spring, pull-start return spring, rope-start rewind coil, starter return coil spring, starter pulley recoil spring.
Fits Models:
135R, 241R, 241RJ, 327 ES, 327 LS, 327ES, 327LS, 327PT5S, 333R, 333RJ, 335 LS, 335 LX, 335FR, 335LS, 335LX, 335R, 335RJX, 335RX, 336FR, 336FRD, 336RK, 340, 340E, 345, 345E, 350, 351, 535 LK, 535FBX, 535LK, 535LS, 535RJ, 535RX, 535RXT
Alternate Part Numbers:
503 85 99-01, 503859901
Product Specifications
| L&S Part No. | 503 85 99 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503859901 |
| Unit of Sale | 1 |
| Applications | 135R, 241R, 241RJ, 327 ES, 327 LS, 327ES, 327LS, 327PT5S, 333R, 333RJ, 335 LS, 335 LX, 335FR, 335LS, 335LX, 335R, 335RJX, 335RX, 336FR, 336FRD, 336RK, 340, 340E, 345, 345E, 350, 351, 535 LK, 535FBX, 535LK, 535LS, 535RJ, 535RX, 535RXT |
| Machine Type | Chainsaws, Brushcutters |
| Fits Brands | Husqvarna |
| Fits Models | 340 | 327PT5S | 340E | 345 | 345E | 350 | 351 | 135R | 241R | 241RJ | 333R | 333RJ | 335FR | 335R | 335RJX | 335RX | 336FR | 336FRD, 336RK | 535FBX | 535LS | 535RJ | 535RX | 535RXT | 327 ES | 327 LS | 335 LS | 335 LX | 535 LK |
