Description
Overview:
This torsion spring is a Genuine Stihl part for the RM 545.0 and RM 545.0 T lawn mowers. Built from durable spring steel, it provides controlled rotational force to return levers, linkages or covers to their resting position, helping the mower operate smoothly and consistently. It restores correct tension where the original spring has weakened, bent or snapped through use. As a direct replacement for OEM No. 6340 708 4505 (superseding 6340 708 4500), it is engineered for a precise fit within the RM 545 series housing and linkages. Designed to meet Stihl's specifications, it supports reliable starting, drive engagement and control functions, helping reduce vibration and improve cut quality in everyday mowing.
Key Features:
- Genuine Stihl part for assured compatibility and performance
- Direct replacement for OEM No. 6340 708 4505; supersedes 6340 708 4500
- Made from robust spring steel for long service life
- Accurate coil geometry for consistent return force and smooth action
- Helps restore proper tension in mower controls and mechanisms
- Stable performance under repeated cycling and load
- Precise fit for the RM 545 platform to reduce setup time
- Easy to install with basic hand tools, minimising downtime
- Supports clean, even cutting by maintaining correct mechanism alignment
- Suitable for routine maintenance or repair after wear or accidental damage
Typical Applications:
Used to replace a worn, fatigued or broken torsion spring in Stihl RM 545-series mowers. Commonly fitted where a controlled return or pivoting action is required, such as control levers, covers or linkage points. Ideal during seasonal servicing, after impact, or when a handle, cover or drive control no longer returns smoothly.
Also known as:
Torsional spring, return spring, pivot spring, mower control spring, Stihl RM 545 series spring, mower linkage spring, lever return spring.
Fits Models:
RM 545.0, RM 545.0 T, RM 545.0 V, RM 545.0 VE, RM 545.0 VM, RM 545.0 VR, RM 545.1, RM 545.1 T, RM 545.1 V, RM 545.1 VE, RM 545.1 VM, RM 545.1 VR, RM5450, RM5451, RME 545.0 C
Alternate Part Numbers:
6340 708 4505, 6340-708-4505, 63407084505, 6340 708 4500, 6340-708-4500, 63407084500
Product Specifications
| L&S Part No. | 6340 708 4505 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 63407084505 |
| Unit of Sale | 1 |
| Applications | RM 545.0, RM 545.0 T, RM 545.0 V, RM 545.0 VE, RM 545.0 VM, RM 545.0 VR, RM 545.1, RM 545.1 T, RM 545.1 V, RM 545.1 VE, RM 545.1 VM, RM 545.1 VR, RM5450, RM5451, RME 545.0 C |
| Machine Type | Mowers |
| Fits Brands | Stihl |
| Fits Models | RM 545.0 T | RM 545.0 VM | RM 545.0 VR | RM 545.1 T | RM 545.1 VM | RM 545.1 VR | RM 545.0 VE | RM 545.1 VE | RME 545.0 C |
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