Reduced-emission engine technology2-stroke engine with stratified charge. A fuel-free layer of air is created between the burned charge in the combustion chamber and the fresh charge in the crankcase, reducing the amount of fuel lost during the charge cycle.
Pre-separation air filtration systemSTIHL long-life air filtration systems with pre-separation achieve perceptibly longer filter life compared with conventional filter systems. Air drawn in is swirled.
Anti-vibration system STIHL has developed an effective anti-vibration system whereby the oscillations from the machine’s engine are dampened which significantly reduces vibrations at the handles.
Semi automatic V-belt tensioningLight, consistent re-tensioning increases the service life of the belts and shaft bearings.
Decompression valveThe decompression valve allows some of the compression pressure in the cylinder to escape, so less force on the starter rope is needed.
CompensatorThis controller in the carburettor prevents the fuel-air mixture getting richer as the air filter becomes clogged. The correct quantity of fuel is delivered to the carburettor depending on the quantity of air passing through the air filter.