Pressure washer - Kärcher K2 . 99

User instructions:
connect up ready for use with water on and connected to power. The user should then press the trigger on the spray gun so that water runs out under tap pressure only and keep it going for 20 seconds or so, only then with the trigger still depressed turn the machine on. It should start and can then be used normally. The attachment also needs to be thoroughly tightened.