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18-Inch 45.6 cc Gas Chain Saw
- Mfg.#
- MS 251 18
- Sku#
- 3654563
- The WOOD BOSS® is packed with reduced exhaust emission engine technology and the power STIHL is known for.
- IntelliCarb™ Compensating Carburetor
- Bumper Spikes - These spikes prevent pull-in and provide better control, making cutting easier.
- Toolless Fuel and Oil Caps with Retainers
- Anti-Vibration System
* Estimated stock levels as of Fri, May 15, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.
Description
The STIHL MS 251 WOOD BOSS® chainsaw is designed to deliver all the power you’d expect from STIHL equipment with a comfortable and ergonomic design. The MS 251 WOOD BOSS® is perfect for felling small trees, pruning and thinning, and cutting firewood simply and efficiently. With up to a 20 percent increase in fuel savings and a 50 percent reduction in exhaust emissions—when compared to previous models—you can enjoy a longer run time while feeling good about your impact on the environment. Features like a Master Control Lever™ and reduced vibration make the STIHL MS 251 WOOD BOSS® a lean, easy-to-use machine that still packs plenty of power.
Not for sale in California.
Specifications
General
| Blade | 18 in. |
|---|---|
| Chain Oil Capacity | 6.7 oz. |
| Chain Pitch | 0.325 in |
| Chain Size | .325" RM3 |
| Chain Type | OILOMATIC® CHAIN |
| Engine | 45.6 cc |
| Engine Power | 3.0 bhp |
| Fuel Capacity | 13.2 oz. |
| Gauge | 0.063 in |
| Number of Drive Links | 68 |
| Power Source | Gas |
| Powerhead Weight | 11.0 lbs. |
| Type | Gas Chain Saw |
Manufacturing Details
The following information is subject to change without notice
| Manufacturer Warranty | 1 Year |
|---|---|
| Prop 65 Warning |
WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
|
| Shop USA | Yes |
Label Information
| Precautionary Statement | CAUTION: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). STIHL recommends the use of green reduced kickback bars and green low kickback chains on all STIHL chainsaws. 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. |
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Videos
Related Documents
Brochure (PDF)
Warranty (PDF)
