... -2,SGS certificate 4.Strong engine backpack gasoline grass cutter 1, two stroke engine fuel (# 90 above), oil, sae30. the heat ... oil, want to use correct types, are factory product, clean, gasoline to clean, fresh.5, non-professional personnel shall not adjust ... not loaded machines exposed before, and may not start the gasoline engine.Technology data: ModelGL-415Matched engine1 E40F-3ADisplacement(cc) ...