Echo CS-4920 

• 50.1 cc Professional-grade, 2-stroke engine for outstanding performance
• Momentary stop watch, automatically returns to "ON" position
• Heavy-duty, easy-access air filter, provides superior filtration with reduced maintenance time
• Purge bulb, delivers fresh fuel to carburetor for easier starts
• Side-access chain tensioner for easy chain adjustments
• Automatic and adjustable clutch-driven oiler, operates only when the chain is moving to reduce oil consumption
• Stratifed, 2-stroke engine which results in lower emissions
• Available in 16, 18, and 20 in. bar lengths, perfect for large jobs and cutting firewood