MS 661 C-M MAGNUM® Chainsaw

When professionals need to fell large trees, in large quantities, they reach for the saw they know has the power to get the job done – the MS 661 C-M. Featuring an impressive power-to-weight ratio and STIHL M-Tronic™ engine management technology, the MS 661 C-M chainsaw also 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 available in select areas.) See MS 661 R C-M.

Gas

POWER SOURCE

16.5 lbs.

POWERHEAD WEIGHT

25 in.

GUIDE BAR LENGTH (Recommended)

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Key Specifications

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.

STIHL M-Tronic™ null

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.

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.

Performance

POWER SOURCE Gas

POWERHEAD WEIGHT 16.5 lbs.

GUIDE BAR LENGTH (Recommended) 25 in.

OILOMATIC® CHAIN 3/8" RS3

CHAIN OIL CAPACITY 13.5 oz.

ENGINE POWER 7.2 bhp

FUEL CAPACITY 28.7 oz.

DISPLACEMENT 91.1 cc