Marlin extruder dives in bed when starting to print

Hi

I setup a new printer, configured all axis , working okay, and can auto level and home correctly .

when i slice something with cura , and start printing , i have a problem .. the extruder head dives in the bed and i have to adjust the z axis to level it to 0.2..

I know it is a setting .. can some good soul guide me what i am doing wrong ?

this is my cura generated code .. first part

;Generated with Cura_SteamEngine 15.01
; Default start code
g28
g29
g01 x10 y10 z10
G1 Z15 F100
M107 ; Turn off fan
G90 ; Absolute positioning
M82 ; Extruder in absolute mode
; Activate all used extruder
M104 T0 S190
G92 E0 ; Reset extruder position
; Wait for all used extruders to reach temperature
M109 T0 S190
;Layer count: 246
;LAYER:0
M106 S255
G0 F3600 X96.997 Y67.328 Z0.300
G0 X96.997 Y67.741
;TYPEKIRT
G1 F1800 X96.997 Y67.328 E0.02267
G1 X99.709 Y64.617 E0.23311
G1 X102.697 Y65.854 E0.41058