The STIHL 4 MIX engine is the first four stroke engine which works on a mixture of petrol and oil. It combines the advantages of four stroke and two stroke engines in one. With higher torque and up to 80% less emissions and a deeper more pleasant sound.Easy to start due to the decompression system and manual fuel pump. With AutoCut mowing head.For professional users with high demands.Standard featuresSTIHL 4 MIX engine Loop handle R Anti vibration system Multi function handle Shoulder strap carrying system Decompression system