Troubleshooting - Stihl SG 51 Manual De Instrucciones

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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
Pressure gauge does not show pres-
sure in container
Pumping action produces no pressure Pump barrel damaged
Nozzle does not spray – pressure in
container OK
Jet only – spray not atomized
1)
STIHL recommends an authorized STIHL servicing dealer.
18
Cause
Pressure gauge defective
Valve disks damaged
Piston cup seal damaged
Nozzle / spinner insert and/or filter blocked
Spinner insert in nozzle missing
Remedy
Install new pressure gauge
Install new pump barrel
1)
Have valve disks replaced
Have piston cup seal replaced
Clean nozzle / spinner insert and/or filter
Fit spinner insert in the nozzle
1)
SG 51, SG 71