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Product Summary

This professional STIHL® MS Series Gas-Powered Chainsaw is as tough as it is technologically smart. Delivers exceptional power-to-weight ratio and fuel efficiency plus a unique engine management system that optimizes engine performance and compensates for changes in operating conditions such as temperature, elevation, fuel quality, and dirty air filters.
This item may be purchased at select Northern Tool stores. Not available for online order at NorthernTool.com.

What's Included

    (1) Stihl Chainsaw MS Series--25in. Bar, 91.1cc, 3/8in. Chain Pitch, Model# MS 661 C-M 25

Features + Benefits

  • 7.2 BHP gas-powered 91.1cc engine
  • 25in. bar with 3/8in. chain pitch and 0.050in. chain gauge
  • ElastoStart? starter handle has a starting grip with a built-in shock absorber that helps reduce effort when pulling on the starter cord
  • Anti-vibration system minimizes vibration levels for comfortable handheld use and reduced operator fatigue
  • M-Tronic? Intelligent Engine Management System eliminates low and high speed carburetor adjustment screws, compensating for a dirty air filter, changes in elevation and fuel quality to deliver optimum engine power at all times
  • Environmentally conscious Reduced-Emission Engine Technology produces zero to low exhaust emissions, performing cleaner than EPA and/or CARB exhaust emission standards
  • Adjustable Automatic Oiler allows the user to adjust the lubricant of the guide bar and saw chain for different bar lengths and cutting conditions
  • Lift and twist toolless fuel and oil cap with retainer eliminates the need for a tool when refueling
  • Side-access chain tensioner is very easy to get to, making it much more convenient for the user to adjust the saw chain with a bar wrench
  • Decompression valve vents compression in the cylinder and helps reduce the effort needed to pull the starter rope for easier starting

Key Specs

AttributeSpecification

item#

63877

Brand

Stihl

Manufacturer's Warranty

1 year limited warranty

Ship Weight

73.84 LB

Bar Length

25 in

Engine Displacement

91.1 cc

Chain Pitch

3/8

Fuel Capacity

27.9 oz
AttributeSpecification

Power Type

Gas

Horsepower

7.2

Case Included

No

Oil Capacity

12.2 oz

Oil Fuel Mix Ratio

50:1

Low Vibration Handle

Yes

Tool-Less Chain Tensioning

No

Product Weight

16.3 lb

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Warranty

Manufacturer's Warranty

1 year limited warranty

Extend Your Warranty Coverage with a Northern Protection Plan (NPP)

Repair Plan — 1 Year

A Northern Protection Plan is available after adding the product to your shopping cart.