Stihl MS 251 C-BE Chainsaw - 45.6cc Gas Engine with 18in Guide Bar for Homeowners - STI-MS251CBEKIT18
The Stihl MS 251 C-BE combines the powerful 45.6cc engine of the standard Wood Boss with exclusive comfort features that truly set it apart. Its Easy2Start technology significantly reduces pulling force, making starting almost effortless for users of all strengths, while the Quick Chain Adjuster allows you to tension the chain with a simple dial turn - no tools needed. With 20% better fuel efficiency and 50% reduced emissions compared to previous models, you'll enjoy longer run times with less environmental impact.
What makes the MS 251 C-BE special is its "Comfort" designation, featuring two premium upgrades not available on the standard MS 251. The intuitive Master Control Lever simplifies operation by combining multiple functions into one control, while the anti-vibration system reduces fatigue during extended use. Perfect for felling small trees, pruning, and cutting firewood, this American-made chainsaw delivers professional-grade performance with homeowner-friendly features - ideal for ambitious homeowners who want power without complexity.
 Features
- 20% fuel savings compared to previous models
- 50% reduced emissions for cleaner operation
- Quick Chain Adjuster for tool-free chain tensioning
- Easy2Start technology for effortless starting
- Anti-vibration system reduces operator fatigue
- Master Control Lever for simplified operation
- Toolless fuel and oil caps with retainers
- Bumper spikes for better control when cutting
Specifications
| Intended Use |
Homeowner |
| Power Source |
Gas |
| Powerhead Weight |
11.5 lbs |
| Guide Bar Length |
18 in |
| Chain |
.325" pitch, 0.050" gauge (23 RM3 68) |
| Engine Displacement |
45.6 cc |
| Engine Power |
3.0 bhp |
| Fuel Capacity |
13.2 oz |
| Chain Oil Capacity |
6.7 oz |
What our Experts Think
Q&A
Maintenance Tips
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Clean after every use: Remove sawdust, oil, and debris from bar, chain, sprocket cover, and cooling fins to prevent overheating and wear.
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Chain care: Keep chain sharp and properly tensioned; check before each use for safe, efficient cutting performance.
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Guide bar maintenance: Clean oil groove and sprocket tip regularly; flip bar periodically for even wear and longer life.
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Chain lubrication: Always check bar oil level and ensure automatic oiler is working to protect bar and chain.
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Air filter service (C-BE system): Clean or replace regularly to maintain easy starting and consistent engine performance.
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Fuel system care: Use fresh fuel mix only; avoid stale fuel and drain tank for long-term storage.
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Spark plug check: Inspect periodically for carbon buildup and replace if starting becomes difficult or engine runs unevenly.
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Quick Chain Tensioner: Ensure tensioning system operates smoothly and keeps chain correctly adjusted.
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Fastener inspection: Tighten bar nuts, chain cover, and housing screws due to vibration during operation.
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Storage: Fit bar cover, store in a dry place, and lightly oil chain and bar to prevent rust.
Damage 
Loss 
Theft 
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