| STIHL MS 661 R | ||
|---|---|---|
| Model name: | MS 661 | R |
| Engine size: | 91.1 | cc |
| Power output: | 7.2 5.4 | hp kW |
| Weight (powerhead): | 16.5 7.5 | lb. kg |
| Bar length: | 25″ | |
| Chain pitch: | 3/8″ | |
| Bar mount: | 3003 |
Compatible Bars
Compatible original Stihl guide bars and Oregon replacement bars are listed in tables below. A link to the bar, compatible Stihl and Oregon chains and a bar&chain combo in Amazon are included whenever possible. (Workshoppist.com is an Amazon Associate. As an Amazon Associate we earn from qualifying purchases.)
Stihl original bars
The MS 661 R technically takes all Stihl guide bars with the Medium 3003 mount, 3/8″ pitch and either .050″ or .063″ gauge. The only recommended bar length is 25″ though.
| STIHL 3003 mount 3/8″ pitch | Length [in.] | Chain (rec.) |
|---|---|---|
| .050” gauge: | 33 RS3 | |
| Rollomatic Super E | 25 in | 84 |
| Rollomatic ES Light | 25 in | 84 |
| .063” gauge: | 36 RS3 | |
| Rollomatic Super E | 25 in | 84 |
| Rollomatic ES Light | 25 in | 84 |
