STIHL MS 661 C-M Gas chain saws for forestry

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ID #: 13265584

The MS 661 C-M chain saw is equipped with cutting-edge technologies for the best possible performance for the logging and harvesting industries. It boasts a low power-to-weight ratio and is the lightest chain saw in its engine displacement class. The extra powerful and efficient delayed stratified scavenging engine allows you to work effectively, thanks to its high cutting performance and low emissions. It features the M-Tronic™ fully electronic engine management system, which uses a microchip to control the engine’s ignition timing and fuel supply, taking into account variables such as temperature, fuel quality and elevation. Take it to the max, with minimum effort.

Features

STIHL M-Tronic (M)

Fully electronic controlled ignition timing and fuel metering system. The engine management STIHL M-Tronic (M) system ensures optimum engine performance, constant maximum speed and excellent acceleration. Manual carburetor adjustments are not necessary.
Heated carburetor (V)

By changing the chain saw from summer to winter operation, the intake air is pre-heated over the engine fins. This ensures that the carburettor does not ice up and you can continue working in freezing temperatures.
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.
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.
Tool free filler caps

Special catches on the fuel and oil tanks for easy opening and locking without the need for 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 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.
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.
Ematic chain lubrication system

The Ematic chain lubrication system ensures pinpoint lubrication of the saw chain links and guide bar rails. When used with STIHL OILOMATIC saw chain, it will provide maximum lubrication, longer wear and less oil consumption than conventional methods of chain lubrication. The Ematic system can reduce bar oil consumption by up to 50%.
Side chain tensioner

The tensioning screw can be found on the side of chain saw through the sprocket cover. This removes the need for contact with the sharp saw chain.
Variable-displacement oil pump

The exact chain oil output can be adjusted manually for varying conditions, allowing for a reduction of up to 50%.