Product Instruction Manual
Page 20
... only - pressure in nozzle missing 1) STIHL recommends an authorized STIHL servicing dealer. Condition Cause Pressure gauge does not show pres- if pressure is no pressure Pump barrel damaged Valve disks damaged Piston cup seal damaged Nozzle does not spray - Pressure gauge defective sure in the nozzle 18 SG 51, SG 71 Remedy Install new pressure... starting any service work, operate the unit until it is not released, chemical may escape unexpectedly when working on the unit. After servicing, carry out test run with clean water.
... only - pressure in nozzle missing 1) STIHL recommends an authorized STIHL servicing dealer. Condition Cause Pressure gauge does not show pres- if pressure is no pressure Pump barrel damaged Valve disks damaged Piston cup seal damaged Nozzle does not spray - Pressure gauge defective sure in the nozzle 18 SG 51, SG 71 Remedy Install new pressure... starting any service work, operate the unit until it is not released, chemical may escape unexpectedly when working on the unit. After servicing, carry out test run with clean water.