Description
Overview:
This Starter Cover Screw is a genuine Husqvarna spare designed to secure the recoil starter cover on compatible Husqvarna petrol chainsaws. It keeps the cover firmly in place, helping protect the starter mechanism and maintain correct alignment for smooth pull-start operation. Manufactured from durable steel with a corrosion‐resistant finish, it withstands outdoor use and vibration in tough cutting conditions. Made for the Husqvarna 455 and used across a wide range of models, including the 135, it offers a precise fit to the factory mounting points for reliable performance. Ideal for replacing a missing, worn, or corroded fastener, it restores secure clamping without damaging surrounding parts. Genuine Husqvarna quality helps ensure consistent fit, longevity, and compatibility with the listed machines.
Key Features:
- Genuine Husqvarna part (OEM 503 21 73-21) for assured compatibility and fit
- Robust steel construction with a corrosion‐resistant finish for long service life
- Correct length and thread to clamp the starter cover securely without overtightening
- Reliable under constant vibration and changing temperatures during regular use
- Easy to install with basic hand tools; fits existing holes and cover bosses
- Helps maintain proper alignment of the recoil starter and cover assembly
- Practical replacement when the original screw is lost, rounded, or rusted
- Suitable for workshop, site, and home maintenance routines on listed chainsaws
Typical Applications:
Used to refit and secure the starter (recoil) cover after servicing or cleaning, replacing damaged or missing fasteners, and preventing cover movement that could affect starting performance. Common during rope or spring replacement, flywheel cleaning, and routine inspection on Husqvarna chainsaws operating in forestry, landscaping, building sites, and garden work.
Also known as:
Starter cover bolt, recoil starter screw, shroud screw, starter housing fastener, recoil cover bolt, starter cover fixing screw, engine shroud bolt, starter casing screw, recoil housing screw.
Fits Models:
135, 135E, 140E, 340, 340E, 345, 345E, 350, 435, 435E, 435EII, 435II, 440E, 440EII, 440II, 445, 445E, 445EII, 445II, 450, 450EII, 455, 455 Rancher, 455 Rancher II, 455E, 455E Rancher II, 455ERancherII, 460, 461, 465 Rancher II, 465RancherII
Alternate Part Numbers:
503 21 73-21, 503217321
Product Specifications
| L&S Part No. | 503 21 73 21 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503217321 |
| Unit of Sale | 1 |
| Applications | 135, 135E, 140E, 340, 340E, 345, 345E, 350, 435, 435E, 435EII, 435II, 440E, 440EII, 440II, 445, 445E, 445EII, 445II, 450, 450EII, 455, 455 Rancher, 455 Rancher II, 455E, 455E Rancher II, 455ERancherII, 460, 461, 465 Rancher II, 465RancherII |
| Machine Type | Chainsaws |
| Fits Models | 340 | 135 | 135E | 140E | 340E | 345 | 345E | 350 | 435 | 435E | 435EII | 435II | 440E | 440EII | 440II | 445 | 445E | 445EII | 445II | 450 | 450EII | 455E | 455E RANCHER II | 455 RANCHER | 455 RANCHER II | 460 | 461 | 465 RANCHER II |
