Stihl MS 661 C-M MAGNUM®
Gas Chainsaws Forestry · Model 1027379
The Stihl MS 661 C-M MAGNUM is a professional forestry gas chainsaw, built for all-day felling, bucking, and production cutting, with a 91.8 cc engine making 7.3 hp and a 36-inch bar. It weighs 16.8 lb (7.6 kg).
For pros: Professional rear-handle chainsaws
At a glance
Displacement
5.6 cu in (91.8 cc)
Engine Power
7.3 hp
Weight
16.8 lb (7.62 kg)
Fuel Capacity
0.22 gal (0.85 L)
Guide Bar Length
35.98 in (914 mm)
Independent reference database. Specs are compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.
Specs verified against the manufacturer spec sheet on — stihlusa.com.
Engine
| Specification | Value |
|---|---|
| Displacement | 5.6 cu in (91.8 cc) |
| Engine Power | 7.3 hp |
| Power | 5.4 kW |
| Fuel Capacity | 0.22 gal (0.85 L) |
| Power-to-Weight | 1.4 kg/kW |
Bar & Chain
| Specification | Value |
|---|---|
| Guide Bar Length | 35.98 in (914 mm) |
| Oil Capacity | 13.5 fl oz (399.24 mL) |
| Chain Pitch | 3/8" |
| Chain Gauge | 0.050 in |
Dimensions & Weight
| Specification | Value |
|---|---|
| Weight | 16.8 lb (7.62 kg) |
| System Weight | 23.19 lb (10.52 kg) |
| Length | 18.98 in (482 mm) |
General
| Specification | Value |
|---|---|
| Power Source | gas |
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Source: Stihl (manufacturer) · View archived copy. Specs normalized for comparison; verify with the manufacturer before purchase.