Efco Professional Chain Saw 20in (.325in x .050in / .058in ga.) 3.4 HP/51.7cc

Description

Maintain steady ground limbing cadence with the Efco Professional 20-Inch 51.7cc Chainsaw engineered to balance robust cutting torque with manageable operating weight. Plastic consumer saw housings warp under heavy loads, causing air leaks and piston seizures. This 51.7cc 2-stroke 1-cylinder engine produces 3.4 HP, driving a 20-inch guide bar cleanly through hardwood.

Commercial landscapers, farm woodlot owners, and municipal maintenance crews work long hours clearing fallen branches where heavy saws cause severe physical exhaustion. Saws with complex digital electronics fail in remote field conditions. Utilizing an all-metal magnesium crankcase paired with a traditional manual carburetor ensures dependable, field-serviceable cutting power that lasts across demanding shifts.

Key Features of Efco Professional 20-Inch 51.7cc Chainsaw

Commercial mid-displacement chainsaws combine manual carburetor simplicity with rugged magnesium crankcase durability.

• Heavy-duty 51.7cc 2-stroke 1-cylinder engine delivers 3.4 HP for commercial felling and firewood harvesting.
• Professional magnesium crankcase resists high-RPM torsional stress and rough jobsite handling.
• Includes a 20-inch guide bar and 0.325-inch pitch cutting chain for rapid hardwood log bucking.
• Two-piece air filtration system removes coarse dust particles before reaching the carburetor.
• Manual needle-valve carburetor provides reliable fuel delivery with easy mechanical screwdriver adjustment.
• Inertia-activated chain brake handle provides positive mechanical engagement to protect the sawyer during kickback.

Constructed around a professional die-cast magnesium crankcase, this powerhead combines high structural strength with a lightweight dry chassis. The 51.7cc engine features a chrome-plated cylinder bore and dual-ring piston design running on heavy-duty ball bearings. A high-capacity air filtration system repels fine sawdust, extending service intervals in dry timber stands.

Mid Size Forestry Dyno Benchmarks

Dyno testing confirms continuous high cutting torque at 9,000 RPM, maintaining steady chain momentum across 16-inch seasoned oak logs without engine stalling. When commercial firewood processors buy Efco Professional 20-Inch 51.7cc Chainsaw units, pricing delivers proven durability over disposable consumer saws. Slicing through downed hardwood, this commercial mid size logging chainsaw pulls chain cleanly.

Farm Woodlot Limits Mandatory Maintenance

This 51.7cc saw is engineered for commercial firewood harvesting, farm land clearing, and municipal storm cleanup. Do not buy this powerhead for delicate climbing tree care or overhead branch pruning. Ground work requires safe two-handed operation. Clean the air filter regularly.

• Inspect and clean the air filter element every 15 operating hours to ensure unrestricted airflow.
• Check the guide bar rails for burrs and dress flat with a track file to ensure straight cuts.

Factory Warranty Timber Saw Manifest

Efco covers this professional chainsaw with a 1-year commercial warranty against defects in engine metallurgy and ignition components. The shipping carton contains the 51.7cc powerhead, 20-inch guide bar, cutting chain, bar scabbard, and combination wrench.