1.backpack brush cutter 2.42.5cc brush cutter 3.ISO, CE, EU-2,SGS certificate ... 4.Strong engine 5.2-stroke,1-cylinder backpack brush cutter 1, two stroke engine fuel (# 90 above), oil ... sae30. Xinji idle break-in 2 hours, the heat engine oil changed rear can normal use. Normal use ... valve seat.8, keep the gasoline engine cylinder especially heat sink clean.9, come on, inspection, maintenance, repair ...