Stihl MS 400 C-M 20″ Chainsaw

£1,133.00 inc VAT

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The new MS 400 C-M is the world’s first chainsaw with a magnesium piston.

The MS 400 C-M chainsaw has been designed with professionals in mind, offering STIHL’s highest performance in the 60cc class. More displacement, more power, more torque, only a small weight increase compared to the MS 362 C-M and an outstanding power to weight ratio.

The new 2-MIX engine provides 4kW of power,compared to 3.5kW in the MS 362 C-M, as well as more torque – 4.1 Nm vs 3.5 Nm. These increases come from larger displacement of 66.8cc, which is a 14% increase compared to the MS 362 C-M. The magnesium piston is also 14% lighter than the aluminum piston in the MS 362 C-M, helping ensure rapid acceleration.

Thanks to these intelligent design features, the MS 400 C-M has an impressive power-to-weight ratio of 1.45 kilograms per kilowatt, making it ideal to use when working in the forest, especially over prolonged periods. The powerhead on it’s own weighs 5.8 kg. In addition to the new 66.8 cc engine, the MS 400 C-M features STIHL’s latest M-Tronic 3.0 technology which has STIHL’s simple re-calibration procedure and an improved HD2 filter, which all help deliver optimum performance from the saw at all times.

The chainsaw also features Elastostart technology that enables effortless starting of the tool. Designed for forestry and arb professionals, the MS 400 C-M can be used for a range of applications, including felling, de-limbing and cutting timber down to size.

Exterior design of STIHL guide bars are subject to change. Technical specifications remain the same.

  • Outstanding power-to-weight ratio of 1.45 kg/kW
  • World’s first STIHL chainsaw with magnesium piston
  • For professionals in forestry
  • Advanced STIHL M-Tronic technology with calibration


Displacement66.8 cm³
Power output4/5.4 kW/bhp
Bar length40-50 cm
Bar length16-20 in
Weight5.8 kg 1)
Weight6.88 / 6.97 / 7.07 / 7.13 kg 2)
Power-to-weight ratio1.45 kg/kW
Sound pressure level107 dB(A) 3)
Sound power level118 dB(A) 3)
Vibration values left/right3.5/3.5 m/s2 4)
STIHL Oilomatic saw chain pitch/type3/8″
Oil pumpAdjustable,Adjustable oil filter
Tank volume0.60 l
Chain pitch3/8″
Chain tensioningLateral chain tensioning
FilterLong-term filter system (pre-separation) / cartridge filter HD2,Long-term filter system (pre-separation) / cartridge filter HD3,Long-term filter system (pre-separation) / cartridge filter HD6
Filter materialPET fabric
Bumper spikeSteel claw
Oil tank volume325 cm³
SprocketRing sprocket
Anti vibration systemStandard AV-System
Filler capTool-free filler cap,WTV tool-free tank cap
EPA Certified fuel consumption2.265 l/h
CO² ­656 g/kWh
Handle typeStandard grip
ExhaustStandard muffler,Standard silencer
CarburettorCompensator / flushing template / carburettor preheating / STIHL M-Tronic,Compensator / Limiter Caps / carburettor heater / STIHL M-Tronic
Speed at maximum power10000 rpm
Additional featuresEmatic chain lubrication system
EPA Certified fuel consumption0.598 glh
Capacity4.08 cu-in
Rollomatic E, cutting length45 cm