Description
STIHL MS 661 CHAINSAW
Features
- Ematic™ Lubrication System
- STIHL ElastoStart™
- HD2 Air Filter
- IntelliCarb™ Compensating Carburetor
Specifications
- 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
- Intended Use: Professional
Note: STIHL recommends #3624 (33 RS3 84) OILOMATIC® saw chain and 25" 3003 000 4030 Ematic™ guide bar combination. Compatible guide bar ranges: 16" to 36". The actual listed guide bar length can vary from the effective cutting length based on which powerhead it is installed on.
Guides & Safety Information
- Chainsaw Safety and Maintenance - Video
- Product Instruction Manual (PDF)
- Product Safety Manual (PDF)
- STIHL Limited Warranty
Important Notes
- STIHL engine products with the Caring for Nature logo are cleaner than EPA Standards for exhaust emissions.
- STIHL recommends using fuel with no more than 10% Ethanol content. Using fuel with greater than 10% Ethanol content may cause damage to your equipment and may void your STIHL warranty.
- The actual listed guide bar length can vary from the effective cutting length based on which powerhead it is installed on.
Safety Warning
WARNING: The occurrence called “kickback” can cause serious or fatal injury. Always read the instruction manual carefully before using your saw. STIHL uses a green and yellow color-coding system to help you select a powerhead, bar, and chain combination that complies with the kickback requirements of ANSI Standard B175.1 (gasoline-powered saws) and §30 of UL 1662/ANSI Standard B175.1 (electric chainsaws). Ask your STIHL dealer about safe operating procedures and the advantages of:
- STIHL Quickstop® chain brake
- STIHL Quickstop® Plus additional chain braking feature
- STIHL reduced kickback bars
- STIHL low-kickback saw chains
STIHL recommends the use of green reduced kickback bars and green low kickback chains on all STIHL chainsaws.
Proposition 65 Warning: Cancer and Reproductive Harm.
WARNING! Improper use of any power tool may cause serious or fatal injury. Read, understand, and follow carefully the operating and safety instructions in your instruction manual before using such products.
STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only.