... ISO, EU-2,SGS certificate 4.Strong engine 4-stroke Gasoline Brush Cutter 1, two stroke engine fuel (# 90 above), ... use check the oil level.2, the two stroke engine air for work, the crankcase temperature ... 5, non-professional personnel shall not adjust the carburetor.6, air cleaner filter often should check, change regularly ... aluminium pipe(mm)26More pictures showing: 4-stroke Gasoline Brush Cutter