Stihl FS 91 R
A Facebook group thread notes its “excellent reliability” after years of use, and a Consumer Reports forum cites it as a durable gas trimmer.
Consolidated from 4 independent outlets
Where the cited sources landed, as we read them
- 4 positive sources
2 of 4 research runs entered this as a product to avoid rather than a pick.
Out of production for years, parts are hard to source and newer models offer better fuel efficiency.
Flagged 28 July 2026
Pros & cons
- ✓ Excellent reliability
- ✓ Durable gas trimmer
- ✓ Lightweight design
- ✓ Strong performance
- ✗ No longer in production
- ✗ Parts difficult to find
- ✗ Newer models have better fuel efficiency
- ✗ Low torque
- ✗ Short runtime
The sources behind this ranking
We searched the web and YouTube for what has been published about this product, then read the articles, video transcripts and comments we found.
4 positive sources
KM 91 R Article The KM 91 R KombiMotor gives professional landscapers great versatility and dependable performance during daily use. Instead of a pile of tools on the trailer, why not have one dependable engine with a selection of space-saving attachments? That’s exactly what the KM 91 R KombiMotor delivers.Read C
craigslist Article Get professional-grade clearing power with this clean, lightly used Stihl FS 91 R trimmer package.Read O
Outdoorequipco Article Stihl FS 91 R — Best for Homeowners with Large PropertiesRead S
Service Autopilot Alyssa Sanders · reviewer We recommend the most powerful model: FS 91 RRead
Frequently asked questions
It ranks #10 of 13 on our string trimmers tier list, in D tier. That placement draws on 4 independent outlets.
None of the 4 sources with a clear view is critical of it. No longer in production. Parts difficult to find. Newer models have better fuel efficiency. Low torque. Short runtime.
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