Stihl MS 400 C-M Forestry Petrol Chainsaw 20 inch Bar 66.8cc

World's first chainsaw with magnesium piston technology

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.

Standard Features:

STIHL M-Tronic (M)
This fully electronic engine management system adjusts ignition timing and fuel metering in all operating modes. It also takes external conditions such as temperature, altitude and fuel quality into account. It ensures consistent engine performance, a constant maximum speed and superb acceleration. M-Tronic makes manual carburettor adjustments unnecessary. Thanks to electronic cold/warm start recognition, now there is only one start position on the combi-lever. The engine starts after fewer pulls and with no change of position, and can immediately accelerate up to speed - even after a cold start. M-Tronic also remembers the settings from the last time the tool was used. So when external conditions are the same, optimal engine performance is available every time you start up again.

STIHL 2-MIX-Engine
1-in-4 channel technology. The economical STIHL 2-MIX engine with 1-in-4channel technology features a high torque over a wide speed range. The chainsaw provides fuel savings of up to 20% compared to STIHL two-stroke engines in the same performance class without 2-MIX technology. Exhaust emissions are reduced by up to 50%.

HD2 filter
The HD2 filter is made from polyethylene filter material with up to 70% finer pores than fleece and polyamide filters to trap even very fine dust. In addition, it is oil and water-repellent and thus very easy to clean. The PET-covered filter cartridge with quick-release lock enables the filter to be assembled and disassembled in next to no time, without using tools.

Decompression valve
The decompression valve is part of the easy starting system. The valve should be pressed before starting to reduce the compression pressure when starting, as well as reducing the effort needed to pull the starter rope. The decompression valve is semi-automatic; it must be pressed manually before starting, but then closes automatically.

STIHL ElastoStart
STIHL ElastoStart reduces the shock caused by the compression of the engine during starting. The compression shock is taken away from the user's joints and muscles through a spring or rubber element in the starter handle.

Side chain tensioner
The tensioning screw can be found on the side of the chain saw through the sprocket cover. This removes the need for contact with the sharp saw chain.

Technical Specification:

• Displacement: 66.8 (cm³)
• Power output: 4/5.4 (kW/bhp)
• Weight ¹⁾: 5.8 (Kg)
• System Weight ²⁾: 6.88/7.07/7.11 (Kg)
• Power-to-weight ratio ²⁾: 1.4 (Kg/kW)
• Sound pressure level ³⁾: 107 dB(A)
• Sound power level ³⁾: 118 dB(A)
• Vibration values left/right ⁴⁾: 3.5/3.5 (m/s²)
• Oil pump: Adjustable oil filter
• Tank volume : 0.60 (I)
• Chain pitch: 3/8" RM
• Chain tensioning : Lateral chain tension
• Sprocket - number of teeth : 7 Z
• Filter : Long-term filter system (pre-separation) / cartridge filter HD2
• Bumper spike : Steel claw
• Cylinder : Chrome
• Oil tank volume: 325 (cm³)
• Sprocket : Ring Sprocket
• Anti vibration system : Standard AV-System
• Filler cap : Tool-free filler cap
• EPA certified fuel consumption: 2.265 (l/h)
• CO2: 656 (g/kWh)

1) Without fuel, without bar and chain
2) Unfueled, with guide bar and saw chain
3) K-factor according to DIR 2006/42/EC = 2.5 dB (A)
4) K-factor according to Dir 2006/42/EC = 2m / s ²