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TROUBLE
LOOK FOR
REMEDY
Sprayer starts to spray
when pumping or sprayer
will not stop spraying
when shut-off lever is
released.
Shut-off lock is engaged.
Squeeze shut-off lever and rotate the lock
towards the nozzle as described in
Spraying
and Locking
section.
Sprayer leaks at pump or
sprayer does not build
pressure.
1. Dirt or debris on pump gasket
(#3F) or closure.
2. Chipped, torn, swollen, or
defective pump gasket (#3F).
3. Check valve (#3G) at bottom of
pump assembly.
4. Worn or damaged o-ring (#3D)
on piston.
1. Clean dirt or debris from gasket (#3F) or
closure.
2. Remove old gasket (#3F) and replace with
new as described in
Pump Disassembly &
Reassembly
section.
3. Replace if missing or damaged as described
in
Pump Disassembly & Reassembly
section.
4. Replace if worn or damaged as described in
Pump Disassembly & Reassembly
section.
Sprayer material overflows
through pump barrel or
pump handle rises when
handle is unlocked.
1. Dirt or debris under check
valve (#3G) on pump.
2. Chipped, torn, or swollen
pump check valve (#3G).
1. Clean check valve (#3G) and valve sealing
surface on pump.
2. Replace check valve (#3G) as described
in
Pump Disassembly & Reassembly
section.
Hose leaks at tank or
shut-off.
1. Loose hose at tank.
2. Cracked, swollen, or faulty hose.
3. Loose hose at shut-off.
1. Tighten hose nut at tank.
2. Replace shut-off assembly for SM II
shut-off.
3. Tighten hose at shut-off.
Sprayer is difficult to
pump.
1. Damaged piston o-ring (#3D)
2. Piston o-ring (#3D) is dry.
1. Replace piston o-ring as described in
Pump Disassembly & Reassembly
section.
2. Lubricate piston o-ring as described
in
Pump Disassembly & Reassembly
section.
Sprayer tank leaks.
Evidence of spray material
escaping from the tank.
Replace entire sprayer.
Nozzle drips when shut-off
lever is released.
1. Dirt or debris in shut-off valve.
2. Damaged o-rings or seals in
shut-offs (Kit #12).
1. Clean shut-off as described in
Shut-off
Maintenance
section.
2. Service shut-off seals as described in
Maintenance service (Kits #12).
Nozzle tip leaks, poor spray
pattern, partial spray or
complete stoppage.
1. Flat seal is missing or damaged
on SM II Shut-off.
2. Spray extension or nozzle
clogged.
3. Dirty or clogged filters of mesh
strainer.
4. Dirty or clogged nozzle tip.
1. Replace flat seal at extension tip (Kit #12).
2. Remove nozzle and clean as described in
Nozzle Maintenance
section.
3. Clean the filters or mesh strainer.
4. Clean the nozzle tip with a soft brush.
TROUBLESHOOTING
