Makita EA6100P53G 20" 61 cc Chain Saw Easy Start spring-assisted starter with optimized engine management for quick starting with less force Powerful 4.6 HP Stratified Air Scavenging engine for lower emissions and improved fuel efficiency Magnesium housing for improved durability and less weight (only 13.2 lbs.) Heavy-duty cartridge air filter system for extended air filter life and improved durability 13,800 RPM with fast acceleration for more efficient cutting performance