Description
Overview:
This lock/position spring is a genuine Husqvarna OEM component for chainsaws, designed to hold and locate small moving parts so they stay in the correct position during use. Made from durable spring steel, it delivers consistent tension and reliable return action for controls and linkages subject to vibration and repeated movement. It is suitable for a wide range of Husqvarna petrol and battery models, including 365 and 570, and is identified under part number 503 43 65-01 (also 503436501). Using the correct genuine spring helps maintain smooth operation, reduces unwanted play in mechanisms, and supports overall safety and longevity of your saw. Ideal for routine maintenance and repairs in both professional and DIY settings.
Key Features:
- Genuine Husqvarna part for correct fit and performance
- Spring steel construction for dependable tension and long service life
- Helps keep levers and linkages correctly located under vibration
- Supports smooth, repeatable operation of associated controls
- Compatible with a wide selection of Husqvarna chainsaws
- Straightforward to install during routine servicing or repair
- Stable performance across varied temperatures and site conditions
- Suitable for professional users, hire fleets, and home users
- Replaces Husqvarna part numbers 503 43 65-01 and 503436501
- Helps maintain safe operation when components rely on positive positioning
Typical Applications:
Used in chainsaw control and cover mechanisms where a compact torsion or detent spring is required to hold parts in place or return them to position. Common during clutch cover, handle, or control linkage servicing, workshop overhauls, and field repairs to restore reliable function and feel.
Also known as:
Lock spring, position spring, detent spring, locating spring, return spring for chainsaw control mechanisms, chainsaw positioning spring.
Fits Models:
135, 135E, 140, 140E, 340, 340E, 340i, 345, 345E, 346XP, 350, 351, 353, 357XP, 359, 362, 362XP, 365, 365 X-Torq, 371XP, 372XP, 372XP X-Torq, 385, 385XP, 390XP, 435, 435E, 435EII, 435II, 435i, 440E, 440EII, 440II, 445, 445E, 445EII, 445II, 450, 450E, 450EII, 455 Rancher, 455 Rancher II, 455E, 455E Rancher II, 455E TrioBrake, 460, 461, 465 Rancher II, 540XP Mark III, 540i XP, 540i XP G, 542i XP, 542i XP G, 545, 550XP, 550XPG, 555, 556, 560XP, 560XP Mark II, 560XPG, 560XPG Mark II, 562XP, 562XP Mark II, 562XPG, 562XPG Mark II, 570, 570II, 575XP, 576XP, 576XP AutoTune, T540 XP Mark III, T540XP, T540XPII, T540i XP, T540i XP G, T542i XP, T542i XP G
Alternate Part Numbers:
503 43 65-01, 503436501
Product Specifications
| L&S Part No. | 503 43 65 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503436501 |
| Unit of Sale | 1 |
| Applications | 135, 135E, 140, 140E, 340, 340E, 340i, 345, 345E, 346XP, 350, 351, 353, 357XP, 359, 362, 362XP, 365, 365 X-Torq, 371XP, 372XP, 372XP X-Torq, 385, 385XP, 390XP, 435, 435E, 435EII, 435II, 435i, 440E, 440EII, 440II, 445, 445E, 445EII, 445II, 450, 450E, 450EII, 455 Rancher, 455 Rancher II, 455 RancherII, 455E, 455E Rancher II, 455E TrioBrake, 455ERancherII, 455ETrioBrake, 460, 461, 465 Rancher II, 465RancherII, 540XP Mark III, 540i XP, 540i XP G, 540iXP, 540iXPG, 542i XP, 542i XP G, 542iXP, 542iXPG, 545, 550XP, 550XPG, 555, 556, 560XP, 560XP Mark II, 560XPG, 560XPG Mark II, 562XP, 562XP Mark II, 562XPG, 562XPG Mark II, 570, 570II, 575XP, 576XP, 576XP AutoTune, 576XPAutoTune, T540 XP Mark III, T540XP, T540XPII, T540XPMarkIII, T540i XP, T540i XP G, T540iXP, T540iXPG, T542i XP, T542i XP G, T542iXP, T542iXPG |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Fits Models | 340 | 135 | 135E | 140E | 340E | 345 | 345E | 346XP | 350 | 351 | 353 | 357XP | 359 | 362 | 362XP | 365 | 365X-TORQ | 371XP | 372XP | 372XP X-TORQ | 385 | 385XP | 390XP | 435 | 435E | 435EII | 435II | 440E | 440EII | 440II | 445 | 445E | 445EII | 445II | 450 | 450EII | 455E | 455E RANCHER II | 455E RANCHER II TRIOBRAKE | 455E TRIOBRAKE | 455 RANCHER | 455 RANCHER II | 460 | 461 | 465 RANCHER II | 545 | 550XP, 550XPG | 555 | 556 | 560XP, 560XPG | 562XP, 562XPG | 570 | 570II | 576XP | T540XP | T540XPII | 340i | T540i XP | 540i XP | T542i XP | 542i XP | 435i | 540i XP G | 542i XP G | T540i XP G | T542i XP G | T540 XP Mark III | 540XP Mark III | 560XPG Mark II | 560XP Mark II | 562XPG Mark II | 562XP Mark II | 576XP AutoTune |
