STIHL MS 661 C-M W Petrol Chainsaw | 71 cm
Competition saw with heated handles and premium Hexa cutting system
Product description
This STIHL MS 661 C-M W comes as standard with the premium Hexa cutting system, and its electric handle heating ensures reliable forestry work even in winter. This professional chainsaw is a real powerhouse offering high, constant performance – and the Hexa cutting attachment adds even more cutting performance and durability for the toughest large-timber work. The MS 661 C-M W is also used as a competition saw in the STIHL TIMBERSPORTS® Series.
Common problems
Intensive winter forestry work in large timber places typical demands on the cutting attachment:
- Standard saw chains reach their limits with diagonal cuts and heavy loads
- Cold handles make safe, precise operation of the high-performance saw more difficult in frost
- Frequent resharpening during intensive continuous use interrupts the workflow
Solution
The standard Hexa saw chain tackles this with up to 10% higher cutting performance in diagonal cuts and longer durability than the standard RS chain, while the electric handle heating ensures a good grip even in sub-zero temperatures.
Key features
- Winter-ready competition saw with 71 cm Hexa cutting attachment
- Up to 10% higher cutting performance in diagonal cuts compared with RS chain
- Electric handle heating for warm hands in frost and snow
- STIHL M-Tronic for optimum engine performance from the start
- STIHL 2-MIX engine with 5.4 kW (7.3 hp) output
- Adjustable high-performance oil pump for long cutting attachments
- HD2 filter with excellent filtering performance
- STIHL anti-vibration system for more comfortable working
Highlights
Rapid Hexa premium saw chain
The hexagonal cutter profile delivers up to 10% higher cutting performance in diagonal cuts and noticeably longer durability than the standard RS chain.
Electric handle heating
Maintenance-free, wear-free heating elements in the handlebar and rear handle ensure a good grip even in sub-zero temperatures.
Competition saw of the STIHL TIMBERSPORTS® Series
The MS 661 C-M W is used in the internationally renowned competition series for professional sport lumberjacking.
Powerful 5.4 kW engine
The STIHL 2-MIX engine delivers the pulling power needed for the toughest forestry work in large timber, combined with STIHL M-Tronic for consistently optimum performance.
Adjustable high-performance oil pump
For very long cutting attachments or very dry wood, the oil delivery rate can be increased as needed.
Comfortable working
The STIHL anti-vibration system significantly reduces strain on arms and hands during longer winter work in large timber.
Technical data
| Part number | 1144 200 0490 |
| Displacement | 91.1 cm³ |
| Power | 5.4 kW / 7.30 hp |
| Weight without fuel | 7.6 kg |
| Bar length | 71 cm |
| Chain pitch | 3/8″ |
| Chain type | Rapid Hexa (RH) |
| Sound pressure level | 105 dB(A) |
| Sound power level | 118 dB(A) |
| Vibration value left/right | 6,9 / 5,6 m/s² |
In the box
- STIHL MS 661 C-M W petrol chainsaw
- 71 cm guide bar
- 3/8″ Rapid Hexa (RH) saw chain
- Combination spanner
- Operating instructions
Frequently asked questions (FAQ)
Who is this version with the Hexa cutting system suitable for?
This version is aimed at forestry professionals who need a particularly durable, winter-ready chainsaw for frequent, demanding large-timber work in winter.
What is the difference from the standard MS 661 C-M W?
Technically identical – only the cutting attachment differs: this version comes as standard with the premium Hexa cutting system instead of the standard RS chain.
How much more performance does the Hexa chain offer?
In diagonal cuts it offers up to 10% higher cutting performance and longer durability than the classic RS chain.
How heavy is the chainsaw in use?
The saw weighs 7.6 kg without fuel, guide bar and saw chain.
What is included?
The chainsaw, guide bar, Hexa saw chain, combination spanner and operating instructions are included.
Safety information & manufacturer details
Using a chainsaw requires experience and safe handling of the tool.
Before first use, familiarise yourself with the operation and the applicable safety regulations.
Please also note the requirements for suitable protective clothing such as chainsaw trousers, safety boots, gloves and a safety helmet with face and hearing protection.
If you are unsure about operating the machine, we recommend a personal handover and instruction from an authorised STIHL dealer.
- Read the operating instructions and safety information in full before first use.
- Wear suitable personal protective equipment.
- Use chainsaws only for their intended purpose.
Manufacturer information
STIHL Vertriebszentrale AG & Co. KG
Robert-Bosch-Straße 13
64807 Dieburg, Germany
Phone: +49 6071 204-0
Email: kundenservice@stihl.de
Data use information (Regulation (EU) 2023/2854)
| Connected products | All STIHL products connected to ‘STIHL connected’. |
| Access to product data | Product data is available in the ‘STIHL connected’ application. The product must be added first. |
| Deleting the user account | When your organisation is deleted, all linked data is removed, subject to statutory retention obligations. |
| Product data collected | Operational readiness status, service information and runtime data. |
| Data format | CSV file (Excel-compatible). |
| Data volume | Less than 1 MB per connected product. |
| Collection | Continuously in real time. |
| Storage location | Cloud infrastructure of the STIHL Group. |
| Storage period | Until the organisation is deleted, taking statutory retention periods into account. |
