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 accumulative total work 30 hours or so replacement of a motor oil. Before and after each use check the oil oil level.2, ...