The Stihl 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 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 a 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 aluminium 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 its 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 the 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.
Included are the bar, chain, scabbard and combination tool.
Standard features
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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.
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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%.
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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.
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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.
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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.
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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.
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Variable-displacement oil pump
Allows a precise, demand-based delivery of oil. It's possible to reduce oil production by up to 50% in the E position. For very long cutting attachments or very dry wood, an additional volume of oil can be added by the user. similar to illustration.
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Tool free filler caps
Special catches on the fuel and oil tanks for easy opening and locking without the need for tools.
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Pre-separation air filtration system
STIHL long-life air filtration systems with pre-separation achieve perceptibly longer filter life compared with conventional filter systems. Air drawn in is swirled. The larger, heavier particles are ejected. The pre-cleaned air is routed to the air filter via the pre-separator duct.
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Anti-vibration system
Intense vibration at the handles of power tools can lead to long-term effects on blood vessels in the hands and arms. STIHL has therefore developed an effective anti-vibration system whereby the oscillations from the machine's engine are dampened which significantly reduces vibrations at the handles.
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Combi lever
As M-Tronic has electronic cold and warm start recognition, only one start position is needed on the combi lever. The exact amount of fuel is supplied on demand. You do not need to know about the status of your chainsaw and can apply full throttle straight away - even with a cold start. Because the saw is warmed up by optimum acceleration in a few seconds.
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Compensator
This controller in the carburettor prevents the fuel-air mixture getting richer as the air filter becomes clogged. The correct quantity of fuel is delivered to the carburettor depending on the quantity of air passing through the air filter. This keeps the fuel/air ratio in the combustion mixture constant and hence also the engine power. The filter doesn't need to be cleaned until an appreciable drop in power occurs.
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Captive nuts
When changing the cutting attachment, you will not risk losing the nuts on the sprocket.
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Advanced combustion technology
Four overflow channels swirl the fuel-air mix before ignition, allowing for optimum combustion and highly efficient performance. The result is lower fuel consumption and high torque across a broad rpm range.
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Magnesium piston
Light-weight piston made out of magnesium. Excellent power-to-weight-ratio. High maximum speed. High durability.
Technical data
| Technical data |
Value |
| Displacement cm³ |
66.8 |
| Power output kW/bhp
|
4/5.4
|
| Bar length cm |
40-50 |
| Bar length " |
16-20 |
| Weight kg 1)
|
5.8 |
| Weight kg 2)
|
6.88 / 6.97 / 7.07 / 7.11 / 7.13 |
| Power-to-weight ratio kg/kW |
1.45 |
| Sound pressure level dB(A) 3)
|
107 |
| Sound power level dB(A) 3)
|
118 |
| Vibration values left/right m/s² 4)
|
3.5/3.5 |
| STIHL Oilomatic saw chain pitch/type |
3/8 " |
| Oil pump |
Adjustable oil filter,einstellbar |
| Tank volume l |
0.60 |
| Chain pitch |
3/8" |
| Chain tensioning |
Lateral chain tension,seitliche Kettenspannung |
| Sprocket - number of teeth |
7 Z |
| Filter |
Langzeit Filtersystem (Vorabscheidung) / Patronenfilter HD2,Long-term filter system (pre-separation) / cartridge filter HD2 |
| Filter material |
PET fabric,PET-Gewebe |
| Bumper spike |
Stahlkralle,Steel claw |
| Cylinder |
Chrom,Chrome |
| Oil tank volume cm3 |
325 |
| Sprocket |
Ring sprocket,Ringkettenrad |
| Anti vibration system |
Standard AV-System |
| Filler cap |
Tool-free filler cap,WTV werkzeugloser Tankverschluss |
| EPA Certified fuel consumption l/h |
2.265 |
| CO2 g/kWh |
656 |
| Handle type |
Standard grip,Standardgriff |
| Exhaust |
Standard muffler,Standardschalldämpfer |
| Carburettor |
Compensator / Limiter Caps / carburettor heater / STIHL M-Tronic,Kompensator / Spülvorlage / Vergaservorwärmung / STIHL M-Tronic |
| Speed at maximum power rpm |
10.000 |
| Additional features |
Ematic chain lubrication system,Ematic-Kettenschmiersystem |
| EPA Certified fuel consumption glh |
0.598 |
1) Without fuel, without bar and chain
2) Without fuel, with bar and 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
