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STIHL MS 661 C-M 25" Magnum® Gas-Powered Chainsaw

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STIHL MS 661 C-M 25" Magnum® Gas-Powered Chainsaw

SKU MS66125
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The STIHL MS 661 C-M 25" Magnum® Gas-Powered Chainsaw is designed for demanding professionals tackling large-scale felling tasks with power and efficiency. Featuring an impressive power-to-weight ratio, this chainsaw comes equipped with STIHL M-Tronic™ engine management technology for consistent performance, reduced fuel consumption, and optimized engine power. The Ematic™ Lubrication System enhances chain oil distribution, while the IntelliCarb™ compensating carburetor adjusts for optimal air-to-fuel ratios. The ElastoStart™ handle reduces starting effort, and a long-life HD-2 filter system minimizes maintenance intervals. Perfect for heavy-duty professional use, the MS 661 C-M offers unmatched reliability and performance.

Features:

  • STIHL M-Tronic™ - Intelligent engine management for optimal performance in varying conditions.
  • Ematic™ Lubrication System - Ensures efficient oil distribution to reduce chain wear and oil consumption.
  • STIHL ElastoStart™ - Reduces starting effort with a shock-absorbing starter handle.
  • IntelliCarb™ Compensating Carburetor - Automatically adjusts air/fuel ratio for consistent engine performance.
  • HD-2 Filter System - Long-life air filtration system reduces maintenance needs and improves efficiency.
  • High-Output Adjustable Oiler - Customizable chain lubrication for heavy-duty cutting tasks.

Model Number: MS 661 C-M 25

Power Source

Gas

Powerhead Weight

16.5 pounds

Guide Bar Length (Recommended)

25 inches

OILOMATIC® Chain

3/8 inches RS3

Chain Oil Capacity

13.5 ounces

Engine Power

7.2 bhp

Fuel Capacity

28.7 ounces

Displacement

91.1 cc

Intended Use

Professional

STIHL M-Tronic

Yes

Ematic Lubrication System

Yes

STIHL ElastoStart

Yes

IntelliCarb Compensating Carburetor

Yes

HD-2 Filter System

Yes

Adjustable Oiler

Yes

Power Source Gas
Powerhead Weight 16.5 pounds
Guide Bar Length (Recommended) 25 inches
OILOMATIC® Chain 3/8 inches RS3
Chain Oil Capacity 13.5 ounces
Engine Power 7.2 bhp
Fuel Capacity 28.7 ounces
Displacement 91.1 cc
Intended Use Professional
STIHL M-Tronic Yes
Ematic Lubrication System Yes
STIHL ElastoStart Yes
IntelliCarb Compensating Carburetor Yes
HD-2 Filter System Yes
Adjustable Oiler Yes

Misplace the user manual? No problem! Hartville Hardware is here to help. Below is the user manual for the STIHL MS 661 C-M 25" Magnum® Gas-Powered Chainsaw. Read it before you buy it, or come back and download it if you have any questions after getting your product home.

STIHL MS 661 C-M 25" Magnum® Gas-Powered Chainsaw

STIHL Limited Warranty can be found here: Click to View


All STIHL products are warranted for 3 months when the product is used for rental purposes.

All STIHL axes, hedge shears, loppers, pruners, and pruning saws are warranted against defective material or workmanship until the product is no longer available while owned by the original purchaser (other than for the purpose of resale) when used for all applications.

STIHL products sold through U.S. dealers are only for distribution in the United States.

 

DOUBLE THE LIFE OF YOUR LIMITED WARRANTY

Double limited warranty protection applies to STIHL gasoline-powered products purchased for personal non-income producing, household purposes only. At the time of your equipment purchase, simply purchase a six-pack of STIHL HP Ultra Oil or at least one gallon of STIHL MotoMix® premixed fuel to qualify for the double limited warranty coverage. STIHL HP Ultra Oil and STIHL MotoMix® premixed fuel provide for improved engine longevity. See the dealer for details or refer to STIHL’s Limited Warranty Policy.

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