Stihl SG 51 User Manual

SG 51, SG 71
English
18
Troubleshooting
Before starting any service work, operate the unit until it is no longer under pressure – if pressure is not released, chemical may
escape unexpectedly when working on the unit.
After servicing, carry out test run with clean water.
Condition Cause Remedy
Pumping action produces no pressure
Lever can be operated with little
resistance
Pump barrel damaged Install new pump barrel
Valve disks damaged Have valve disks replaced
1)
Piston cup seal damaged Have piston cup seal replaced
1)
Lever jammed or difficult to move
downwards
Piston cup seal not lubricated Lubricate piston cup seal with grease
Nozzle / filter plugged Clean nozzle / filter
Unit sprays only while pumping Pressure vessel full of liquid Pump until unit is completely empty
Repeat after no more than 5 refills
Nozzle does not spray – pressure in
container OK
Nozzle / filter plugged Clean nozzle / filter
Liquid drips from nozzle Nozzle / filter plugged Clean nozzle / filter
Jet only – spray not atomized Nozzle dirty Clean nozzle
1)
STIHL recommends an authorized STIHL servicing dealer.

Stihl SG 51 Specifications

General

Volume	12 L
Material	-
Product color	Black, Orange, White
Quantity per pack	1 pc(s)

Weight and Dimensions

Weight	4500 g