Description
Overview:
The Belt Tensioner for Stihl TS400 is a genuine Stihl part designed to keep the drive belt at the correct tension for reliable cutting performance. Made as a robust metal assembly with a silver body and a black idler roller, it withstands abrasive dust and vibration found in cutting applications. By maintaining steady belt tension, it helps prevent slip, heat build-up, and premature belt wear. This OEM component (Part No. 4221 660 0400) is engineered for a precise fit and smooth operation on Stihl cut-off saws such as the TS400 and TS460, helping the machine transmit power efficiently from the engine to the cutting wheel. Genuine Stihl quality supports long service life and consistent results.
Key Features:
- Genuine Stihl OEM part for accurate fit and compatibility (4221 660 0400)
- Helps maintain correct belt tension to reduce slip and wear
- Sturdy metal construction with a durable idler roller for demanding use
- Designed to cope with dust, debris, and vibration in site conditions
- Supports smoother power transfer and stable cutting speed
- Can help extend belt life and reduce downtime between services
- Straightforward replacement using standard workshop tools
- Suitable for routine maintenance or replacing a worn or seized tensioner
Typical Applications:
Used on Stihl cut-off saws in construction, demolition, utilities, and landscaping. Ideal when servicing the drive system, curing belt slip, or restoring correct belt tracking after heavy use. Suitable for routine preventative maintenance to keep saws operating efficiently and safely on site.
Also known as:
Belt adjuster, drive belt tensioner, idler tensioner, idler arm, V-belt tensioner, belt regulator, belt tension adjuster. These terms refer to the same assembly that sets and maintains drive belt tension on cut-off saws.
Fits Models:
TS400, TS460, TS700, TS800, TSA300
Alternate Part Numbers:
4221-660-0400, 42216600400
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