# Stihl FS 91 R

- Source: https://stierproducts.com/products/stihl-fs-91-r
- Category board: https://stierproducts.com/categories/string-trimmers
- Placement: #10 of 13 in String Trimmers, D tier
- Brand: Stihl
- LP on this board: 301
- Last researched: 2026-08-19T04:38:29.357Z
- Method: https://stierproducts.com/methodology
- Dataset: https://doi.org/10.5281/zenodo.22062813 - every board at once, one dated snapshot per release, same licence, prices and photographs left out
- Reuse: Text, rankings, tier assignments, LP values and verdicts are free to quote and reuse with attribution to stierproducts and a link to the source URL (CC BY 4.0: https://creativecommons.org/licenses/by/4.0/). Product photographs are not covered: they belong to their respective owners and are reproduced to illustrate the product being reviewed. Do not redistribute them under this licence.

## Verdict

A Facebook group thread notes its “excellent reliability” after years of use, and a Consumer Reports forum cites it as a durable gas trimmer.

## For

- Excellent reliability
- Durable gas trimmer
- Lightweight design
- Strong performance

## Against

- No longer in production
- Parts difficult to find
- Newer models have better fuel efficiency
- Low torque
- Short runtime

## Flagged as one to avoid

This product entered 2 of 4 runs as one buyers cross-shop but should not buy, rather than as a pick. It is published here rather than dropped.

## Evidence

Consolidated from 4 independent outlets

| Outlet | Said by | Stance | Link | Link status |
| --- | --- | --- | --- | --- |
| Outdoorequipco | outdoorequipco.com | B | https://www.outdoorequipco.com/best-stihl-weed-eater-2026/ | fetched and confirmed |
| craigslist | craigslist.org | B | https://www.craigslist.org/view/d/medford-stihl-fs-91-trimmer-pro-package/iFgLWJAefTi7yQWvSf7iMd | fetched and confirmed |
| Service Autopilot | Alyssa Sanders | B | https://www.serviceautopilot.com/lawn-care/trimmers-lawn-care/ | fetched and confirmed |
| KM 91 R | ruralking.com | B | https://www.ruralking.com/stihl-kombi-system-landscaping-multi-tool-km-91-r | fetched and confirmed |

## Nearest alternatives on this board

| Rank | Product | Tier | Page |
| --- | --- | --- | --- |
| 1 | Husqvarna Weed Eater 320iL | S | https://stierproducts.com/products/husqvarna-weed-eater-320il |
| 2 | Ego ST1511T Power+ 15 | S | https://stierproducts.com/products/ego-st1511t-power-15 |
| 5 | Echo SRM-2620 | C | https://stierproducts.com/products/echo-srm-2620 |
| 6 | Black+Decker LSTE525 | C | https://stierproducts.com/products/black-decker-lste525 |
| 7 | Husqvarna 130C | C | https://stierproducts.com/products/husqvarna-130c |
| 8 | Ryobi One+ 18V 13 | C | https://stierproducts.com/products/ryobi-one-18v-13 |
| 9 | Makita 20V String Trimmer | D | https://stierproducts.com/products/makita-20v-string-trimmer |
| 11 | Echo X Series String Trimmer | F | https://stierproducts.com/products/echo-x-series-string-trimmer |
| 12 | Kobalt 20V String Trimmer | F | https://stierproducts.com/products/kobalt-20v-string-trimmer |
| 13 | Atlas 20V String Trimmer | F | https://stierproducts.com/products/atlas-20v-string-trimmer |

The full board is at https://stierproducts.com/categories/string-trimmers.

## What this tier means

- D: Weak. Hard to recommend when better options cost similar money.

## How to read this

- Each category is researched in four independent runs, one per lens (expert consensus, value, reliability, community pulse). Every run ranks a board of candidates that deliberately includes products buyers cross-shop but should avoid. Placements score on a ranked ladder (LP), and tiers are derived from LP, so no tier is ever assigned by hand.
- LP is this product's points on its own category ladder. It is comparable within a category and not across categories.
- Link status reports what our pre-publication link check found when it fetched the cited URL. It says nothing about the quality of the review.
- A citation with no usable link is listed rather than dropped, and is excluded from the counted total above.

## Image

https://stspimgdevmfyk46r5vwkay.blob.core.windows.net/images/products/stihl-fs-91-r.webp

Product photographs are not covered: they belong to their respective owners and are reproduced to illustrate the product being reviewed. Do not redistribute them under this licence.