1) Engine Model: 139F 2) Engine Type: 4 Stroke, Single Cylinder, Forced Air Cooled 3) Displacement ... 4) CE DS-809A(1) Knapsack power sprayerTechnical parameters:Engine Model: 139F Engine Type: 4 Stroke, Single Cylinder, Forced Air Cooled Carburetor ... of our goods passed, CE, 3C certificates. The gasoline engine has << national industrial product manufacture licensing certificate>>. Our products can ...