Stihl MS 400 C-M Chainsaw

The Stihl MS 400 C-M is a robust professional chainsaw with a lightweight magnesium piston.

Designed for the most demanding tree care and forestry professionals, the STIHL MS 400 C-M is built with STIHL M-Tronic™ engine technology to deliver low-emission, fuel-efficient performance even under changing conditions. Unlike its aluminum piston-equipped counterparts, the advanced magnesium piston in the MS 400 C-M provides more significant displacement, power, and torque without additional weight. A long-life HD2 air filter means you clean it instead of replacing it, while a pre-separation system removes large debris before it even gets to the air filter, increasing run time between cleanings.

Features
Specifications
Features

• Anti-Vibration System
  STIHL has developed a system for minimizing the vibration levels of handheld outdoor power equipment. The STIHL anti-vibration system helps reduce operator fatigue and provides a more comfortable working experience.
• Fuel and oil caps with retainers
  The fuel and oil cap retainers attach the caps to the unit for convenience.
• Excellent power-to-weight ratio (12.8 lbs./5.4 bhp)
  The MS 400 C-M delivers an excellent power-to-weight ratio thanks to innovative engineering and construction.
• Magnesium Alloy Piston
  The magnesium alloy piston is lighter in weight than equivalent-size aluminum alloy pistons.
• Modern Design
  The modern design of the MS 400 C-M is an aesthetic reflection of the power and innovation this saw delivers.
• STIHL M-Tronic™
  This product features M-Tronic™ (M) – a new generation of Intelligent Engine Management that eliminates the low and high-speed carburetor adjustment screws, compensates for the dirty air filter, and changes in elevation and fuel quality for optimum engine power at all times.See it in action!
• Master Control Lever™
  The Master Control Lever™ is an easy-to-use single-lever operating the choke, starting throttle lock, and on-off switch. The operator must pull the throttle trigger before moving the Master Control Lever™ to the choke position.
• STIHL Quickstop®
  STIHL chainsaws are equipped with a chain-stopping system to reduce the risk of injury in certain kickback situations. It is called a STIHL Quickstop® chain brake. The STIHL Quickstop® chain brake is designed to stop the chain’s rotation if activated by the operator’s hand or inertia if the saw kicks back with sufficient force. In some working positions, the STIHL Quickstop® chain brake can be activated by inertia, stopping the chain within fractions of a second.
  See it in action!
• Pre-Separation Air Filtration System
  This time-saving technology boosts the efficiency of the engine’s filter system, doubling the time between air filter cleanings. Air drawn into the engine is first separated via centrifugal force, ejecting the heavier dirt particles before being routed to the air filter. This pre-separation means less dirt to be captured by the air filter, resulting in less frequent cleaning and maintenance.

• Side-Access Chain Tensioner
  The side-access chain tensioner makes it much more convenient for the user to adjust the saw chain with a bar wrench as opposed to the typical location of the guide bar adjustment screw.
• Decompression Valve
  The decompression valve, also known as the ‘deco’ or ‘deco valve,’ vents compression in the cylinder for easier starting. It temporarily reduces the compression in the combustion chamber during cranking and helps reduce the effort needed to pull the starter rope. The decompression valve is opened manually and closes automatically as soon as the engine fires.
• Ematic™ Lubrication System
  The Ematic™ guide bar, when used with the STIHL OILOMATIC® saw chain, will provide proper lubrication and less oil consumption than conventional methods. The system works because two ramps, strategically placed in the guide bar rail, help contain the flow of oil and direct all lubrication to the sliding faces of the bar and chain links as well as the rivets and driver holes, which in turn can reduce bar oil consumption up to 50%.
• Adjustable Automatic Oiler
  The Adjustable Automatic Oiler allows the user to adjust the guide bar and saw chain lubricant for different bar lengths and cutting conditions.
• Winter/Summer Shutter
  The Winter/Summer Shutter allows the carburetor to operate at optimum temperature year-round and helps to prevent carburetor icing when working below 50°F (10°C).
• STIHL ElastoStart™
  The ElastoStart™ starter handle is an exclusive STIHL feature. It is a starting grip with a built-in shock absorber that helps reduce the effort when pulling on the starter cord. The ElastoStart™ starter grip noticeably reduces the sudden peak forces (compression) usually felt during cranking. The forces at the grip after the first compression stroke are smoothed out.
• Lightweight (12.8 lbs.)
  The MS 400 C-M professional chainsaw is designed to deliver lightweight performance and job site productivity.

Specifications

STIHL recommends #3624(33 RS3 72) OILOMATIC® Saw Chain and 20” 3003 008 8921 Ematic™ guide bar combination. Compatible guide bar ranges: 16″ to 25″