STIHL MS 661 R C-M MAGNUM Review

The MS 661 professional chainsaw with a wrap-around handle (R) for greater maneuverability.

For greater maneuverability when felling large trees, turn to the impressive performance of the MS 661 R C-M. Its wrap-around handle also provides greater operator comfort when cutting. Just like the MS 661 C-M, the saw includes STIHL M-Tronic™ engine management technology and delivers less vibration and 20% greater fuel efficiency than the MS 660. Other features include a long-life filter system using HD-2 filter elements to provide longer run times between maintenance, an ElastoStart™ handle and a high output adjustable oiler. (Wrap-handle version is available in select areas only).

Features

Reduced-Emission Engine Technology – Caring for Nature

The STIHL Inc. “Caring for Nature” seal identifies its powered products that are more environmentally conscious, producing zero or low exhaust emissions. STIHL Inc. defines “low exhaust emissions” as being cleaner than EPA and/or CARB exhaust emission standards.

Wrap Handle (R)

The saw can be used in multiple positions for felling or limbing with hands in the proper positions.

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.

STIHL ElastoStart™

The ElastoStart™ starter handle is an exclusive feature of STIHL. 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) normally felt during cranking. The forces which occur at the grip after the first compression stroke are smoothed out.

Decompression Valve

The decompression valve also referred to as ‘deco’ or ‘deco valve’, vents compression in the cylinder for easier starting. The decompression valve temporarily reduces the compression in the combustion chamber during cranking and helps reduce the effort needed to pull the starter rope. It is opened manually and closes automatically as soon as the engine fires.

Adjustable Automatic Oiler

The Adjustable Automatic Oiler allows the user to adjust the lubricant of the guide bar and saw chain for different bar lengths and cutting conditions.

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.

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.

STIHL OILOMATIC Saw Chain

STIHL makes its own saw chains.

Ematic™ Bar

Includes a polymer ramp reservoir that holds bar oil until it can be picked up by a passing chain. This can reduce oil usage by up to 50%.

Bumper Spikes

They help prevent pull-in and provide better control, making cuts easier.

Spark Arrester Muffler

Has large baffles which reduce noise levels and contain a screen designed to reduce the emission of sparks.

STIHL Quickstop® Chain Brake System

Designed to stop the chain in fractions of a second. Can be manually activated by inertia if the kickback force is sufficient.

Front Hand Guard

Designed to reduce the risk of injury.

Front Handle

Designed for a secure grip and ergonomically angled for comfort.

Protected Spark Plug

Protected, yet easy to change.

Large Starting Handle

Easy to grip.

Smooth Clean Design

Has no rough edges to snag on clothing or brush.

Air Filter Cover

Easy to remove for fast and easy filter cleaning or replacement.

Master Control Lever™

Is a single lever operating the choke, starting throttle lock and on-off switch.

Rear Hand Guard

Reduces the risk of injury as well as provides a wide area for foot placement during starting.

High-Tech Polymer Housings

Lightweight, withstand greater impact, and are corrosion-resistant.

Translucent Fuel Tank

Allows operator to easily check fuel level before starting work.

Anti-vibration system

Helps reduce operator fatigue.

Electronic Ignition

Provides easier starting and smoother running.

Replaceable “In Tank” Fuel and Oil Filters

Lower cost and are easy to maintain.

Inboard Chain Brake

Requires less maintenance and makes saw chain sprocket easier to remove.

Automatic Bar and Chain Oiler

Lets the operator concentrate on cutting, not bar lubrication.

Chain Catcher

Helps reduce the risk of operator contact by a chain if it should break or derail.

Throttle Trigger Lockout

Must be depressed before the trigger can be activated.