MS 661 C



The STIHL MS 661 C-M professional chainsaw is a real powerhouse, offering strong and consistent performance. It combines cutting-edge technology with an optimum power-to-weight ratio of 1.4 kg/kW and is ideal for particularly tough and demanding forestry applications. Even thick wood can be processed effectively and quickly using this petrol chainsaw.

The chainsaw is powered by a 5.4 kW (7.3 hp) STIHL 2-MIX engine, which ensures a consistently high performance thanks to STIHL M-Tronic. The controlled-delivery oil pump reliably supplies the cutting attachment with oil and enables the use of long and very long cutting attachments.

The STIHL MS 661 C-M petrol chainsaw is also used as a competition saw in the STIHL TIMBERSPORTS® series. Other features of the STIHL MS 661 C-M chainsaw:

  • the HD2 air filter removes even the finest dust from the air, and is easy to clean using STIHL VarioClean. In a video guide, we demonstrate the cleaning process.
  • The STIHL anti-vibration system enables you to work comfortably and protects your muscles and joints.

Tool-free fuel caps save you time and effort when filling the chainsaw.

  • High-performance petrol saw for even the toughest jobs
  • For professional hardwood forestry
  • Easy starting and optimised engine performance with STIHL M-Tronic
  • Competition chainsaw in the STIHL TIMBERSPORTS® series


Bar length 63 cm 
Bar length 25 in 
Displacement 91.1 cm³ 
Displacement 5.56 cu-in 
Engine power 5.4 kW 
Engine power 7.2 bhp 
Weight 7.6 kg 1)
Power-to-weight ratio 1.4 kg/kW 
System Weight 9.41 / 9.75 kg 2)
Sound pressure level 105 dB(A) 3)
Sound power level 118 dB(A) 3)
Saw chain pitch .404 ",3/8 "

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