Wylie Defender 3 Pt Sprayer, Operator'S & Parts Manual, Page: 26 / 34

22
General Troubleshooting Guidelines
Troubleshooting
Problem Cause Solution
Pump Will Not
Operate
(1) Tractor PTO not engaged (Defender)
(2) Gasoline engine not running (LGS-50)
(3) 12 volt pump not connected to electricity
(Utility & LGT-25)
(4) In-line fuse blown (Utility & LGT-25) (1) Engage tractor PTO
(2) Start engine
(3) Connect red wire to positive (+), black wire to
negative (-)
(4) Replace fuse
Pump will not
spray solution
(1) Spray tank empty
(2) Tank ball valve closed
(3) Plugged strainer
(4) Malfunctioning pump (1) Fill tank
(2) Open ball valve
(3) Clean strainer screen
(4) See pump owners manual or contact Wylie
Spray Center
Pump output is
very low; erratic
(1) Spray tank low; air getting in pump
(2) Tank ball valve partially closed
(3) Plugged strainer
(4) Collapsed suction hose
(5) Air leak in suction system
(6) Malfunctioning pump
(7) PTO/engine RPM too slow (Defender) (1) Fill tank
(2) Open ball valve
(3) Clean strainer screen
(4) Replace suction hose
(5) Tighten fittings; Check for cracked or cut com-
ponents; Apply thread sealant to pipe threads.
(6) See pump owners manual or contact Wylie
Spray Center
(7) Increase PTO/engine speed
Controller/gun or
nozzles do not
operate
(Defender, LGS-50, Utility)
(1) Control valve handle not engaged
(2) Wrong control valve engaged
(3) Malfunctioning controller
(1) Rotate handle “up” to engage
(2) Engage correct control valve
(3) Repair or replace control valve or contact
Wylie Spray Center
No output or
insufficient
pressure at spray
tip(s)
(1) Air leak in suction side of system
(2) Problem with pump
(3) Control valve malfunctioning
(4) Pressure regulating valve set too low
(Defender, LGS-50, Utility)
(5) Nozzle strainer(s) or tip(s) clogged
(6) Agitator valve opened too much
(Defender, LGS-50, Utility) (1) See above
(2) See above
(3) Repair or replace control valve
(4) Increase pressure by adjusting pressure
regulating valve
(5) Clean strainer(s) or tip(s)
(6) Close agitator valve partially to allow pressure
to build
No output from
one section of
sprayer (1) Wrong control valve engaged (Defender) (1) Engage correct control valve
Spray pattern
uneven at one tip
(1) Trash in tip orifice
(2) Damaged tip orifice
(3) Worn or damaged tip
(1) Clean tip
(2), (3) Replace tip
Spray solution
not mixing well
(Defender, LGS-50, Utility)
(1) Agitator closed
(2) Clogged or damaged agitator
(3) Bypass must operate longer
(1) Open agitator ball valve
(2) Replace agitator assembly
(3) Turn gun and boom off; let pump operate