79.2 CC Chainsaw
Weight: 13.9 lbs (powerhead only) 
power: 6.7 bhp 
Fuel type: Gasoline maximum ethanol e10 
 
Designed and built exclusively for forestry personnel and tree service professionals, the MS 500i is the first ever chainsaw on the worldwide market with electronically controlled fuel injection. With its excellent power-to-weight ratio, this saw is an impressive piece of equipment for pros looking to take on tree felling, bucking, or delimbing operations. Thanks to its unique fuel injection system, the MS 500i delivers rapid acceleration. Combining innovative technology with world-class engineering and durable construction, the MS 500i is another great addition to the long line of legendary STIHL chainsaws.