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STIHL MS 661 Chainsaw
The STIHL MS 661 Chainsaw is built for demanding forestry applications and professional users who need superior power and reliability. Powered by a 2-stroke, single-cylinder petrol engine with a displacement of 91.1 cc, it delivers a strong power output of 5.4 kW (7.3 hp) for efficient cutting of large timber and heavy-duty work.
The chainsaw operates at a high engine speed of up to 13,500 rpm, ensuring fast cutting action. Its dry weight without the cutting attachment is only 7.4 kg, offering excellent maneuverability and balance. The chain oil tank holds 400 ml and the fuel tank holds 850 ml, providing long runtime.
It supports approved guide bar lengths from 20″” to 36″”. With a sound pressure level of 105 dB(A) and vibration levels of 5.5 m/s² (both handles), the MS 661 ensures high efficiency in tough working environments. Maximum chain speed is 27.5 m/s. The STIHL MS 661 is a dependable and powerful tool for forestry professionals.
⚡ Technical Specification
| Feature | Specification |
|---|---|
| Brand | STIHL |
| Model Name | MS 661 |
| Engine Type | 2-Stroke, Single Cylinder, Petrol Engine |
| Engine Displacement | 91.1 cc |
| Engine Idle RPM | 2800 ± 200 RPM |
| Engine High RPM | 13500 ± 500 RPM |
| Power Output | 5.4 kW / 7.3 hp |
| Dry Weight (without cutting attachment) | 7.4 kg |
| Fuel Tank Capacity | 850 ml |
| Chain Oil Tank Capacity | 400 ml |
| Power-to-Weight Ratio | 1.4 kg/kW |
| Chain Type | 3/8″” Pitch, 1.6 mm Saw Chain |
| Approved Guide Bar Length | 20″”, 25″”, 30″”, 36″” |
| Sound Pressure Level | 105 dB(A) |
| Sound Power Level | 118 dB(A) |
| Vibration Level (Left Handle) | 5.5 m/s² |
| Vibration Level (Right Handle) | 5.5 m/s² |
| Maximum Chain Speed (ISO 11681, 3/8″”) | 27.5 m/s |
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