

Stihl MS400C-M
Tailored for the most exacting tree care and forestry professionals, the STIHL MS 400 C-M combines cutting-edge STIHL M-Tronic™ engine technology, ensuring top-notch low-emission, fuel-efficient performance even amidst changing conditions. Unlike its aluminum piston-equipped counterparts, the advanced magnesium piston of the MS 400 C-M offers greater displacement, power, and torque without any added weight. With a long-lasting HD2 air filter that necessitates cleaning rather than replacement, and a pre-separation system that eliminates substantial debris before reaching the air filter, you can enjoy extended intervals between filter maintenance.
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Series Models
MS400C-M
Gas, 12.8 lbs., 25" Bar, 3/8" RS3 Oilmatic Chain, 11 oz. Oil Capacity, 5.4 bhp, 20.3 oz. Fuel Capacity, 66.8cc Discplacement

Series Models
MS400C-M
Item is In-Stock!
Gas, 12.8 lbs., 25" Bar, 3/8" RS3 Oilmatic Chain, 11 oz. Oil Capacity, 5.4 bhp, 20.3 oz. Fuel Capacity, 66.8cc Discplacement

MS400C-M Features:
- Decompression Valve: The decompression valve, also known as the 'deco' or 'deco valve,' releases compression in the cylinder, making starting easier. It temporarily reduces compression in the combustion chamber during cranking, minimizing the effort required to pull the starter rope. The valve is opened manually and closes automatically as soon as the engine ignites.
- Stihl Elastostart: An exclusive STIHL feature, the ElastoStart™ starter handle includes a built-in shock absorber that lessens the effort needed when pulling the starter cord. It significantly reduces the abrupt peak forces (compression) typically experienced during cranking. The forces at the grip are smoothed out after the first compression stroke.
- Adjustable Automatic Oiler: The Adjustable Automatic Oiler permits users to fine-tune the lubrication for different bar lengths and cutting conditions.
- Pre-Separation Air Filtration System: This innovative technology amplifies the engine's filter system efficiency, effectively doubling the duration between air filter cleanings. It uses centrifugal force to pre-separate incoming air, ejecting heavier dirt particles before reaching the air filter. As a result, the air filter captures less dirt, leading to reduced cleaning and maintenance frequency.
- Stihl M-Tronic: This model boasts M-Tronic™ (M), a next-generation Intelligent Engine Management system that eliminates the need for low and high-speed carburetor adjustment screws. It automatically compensates for factors such as dirty air filters, changes in elevation, and fuel quality to maintain optimal engine power consistently.
- Excellent Power-to-Weight Ratio (12.8 lbs./ 5.4 bhp): Thanks to innovative engineering and construction, the MS 400 C-M achieves an exceptional power-to-weight ratio.
- Winter/Summer Shutter: The Winter/Summer Shutter ensures year-round optimum carburetor temperature and guards against carburetor icing when working below 50°F (10°C).
- Anti-Vibration System: STIHL's comprehensive anti-vibration system minimizes vibrations generated by handheld outdoor power equipment. This results in reduced operator fatigue and a more comfortable work experience.
- Ematic Lubrication System: The Ematic™ guide bar, when used with STIHL OILOMATIC® saw chain, provides precise lubrication and reduces oil consumption compared to traditional methods. Strategically placed ramps in the guide bar rail regulate oil flow, directing lubrication to the sliding surfaces of the bar and chain links, as well as rivets and driver holes. This can reduce bar oil consumption by up to 50%.
- Master Control Lever: The Master Control Lever™ is a user-friendly single lever that governs the choke, starting throttle lock, and on-off switch. The operator must first 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 designed to reduce the risk of injury during certain kickback situations. This system, known as the STIHL Quickstop® chain brake, is engineered to halt the chain's rotation if triggered by the operator's hand or inertia in response to a kickback force. In some working positions, the STIHL Quickstop® chain brake can be activated by inertia, halting the chain within fractions of a second.
- Side Access Chain Tensioner: The side-access chain tensioner makes it significantly more convenient for users to adjust the saw chain using a standard bar wrench, as opposed to the typical guide bar adjustment screw location.
- Magnesium Alloy Piston: The magnesium alloy piston is lighter than an aluminum alloy piston of an equivalent size.
- Modern Design: The contemporary design of the MS 400 C-M mirrors the power and innovation this saw offers.
- Fuel and Caps with Retainers: Fuel and oil cap retainers keep the caps securely attached to the unit for added convenience.