Lesco Pump Sprayer - User Manual

Questions and Answers

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Matthew JonesAug 12, 2025
What to do if Lesco Pump Sprayer Paint Sprayer nozzle tip leaks or has a poor spray pattern?
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  Cynthia LozanoAug 12, 2025
  If your Lesco Paint Sprayer nozzle tip is leaking, has a poor spray pattern, a partial spray, or is completely stopped, it could be due to a missing or damaged flat seal or a clogged spray extension or nozzle. Replace the flat seal at the extension tip using Kit #7. Also, remove the nozzle and clean it as described in the Nozzle Maintenance section.
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twilkersonAug 16, 2025
Why Lesco Pump Sprayer Paint Sprayer leaks at the pump or doesn't build pressure?
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  amandagutierrezAug 16, 2025
  If your Lesco Paint Sprayer leaks at the pump or doesn't build pressure, it could be due to several reasons: * Dirt or debris on the pump gasket or closure. * A chipped, torn, swollen, or defective pump gasket. * An issue with the check valve at the bottom of the pump assembly. * A worn or damaged o-ring on the piston. To resolve this, clean any dirt or debris from the gasket or closure. If the gasket is damaged, replace it as described in the Pump Disassembly & Reassembly section. Also, replace the check valve or o-ring if they are missing or damaged, following the instructions in the Pump Disassembly & Reassembly section.
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Matthew HernandezAug 19, 2025
How to fix Lesco Pump Sprayer nozzle that drips when shut-off lever is released?
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  sperezAug 19, 2025
  If your Lesco Paint Sprayer nozzle drips when the shut-off lever is released, it could be due to dirt or debris in the shut-off valve or a damaged o-ring or seal in the shut-off (Kit #7). Clean the shut-off as described in the Shut-off Maintenance section. Additionally, service the shut-off seals as described in Maintenance service Kit #7.
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Jennifer RodriguezAug 23, 2025
Why is my Lesco Pump Sprayer Paint Sprayer difficult to pump?
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  Kimberly HoltAug 25, 2025
  If your Lesco Paint Sprayer is difficult to pump, it could be due to a damaged piston o-ring or a dry piston o-ring. Replace the piston o-ring as described in the Pump Disassembly & Reassembly section. If the o-ring is simply dry, lubricate it as described in the Pump Disassembly & Reassembly section.
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Jonathan KingAug 27, 2025
What causes Lesco Paint Sprayer material to overflow through the pump barrel?
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  Becky FerrellAug 27, 2025
  If sprayer material overflows through the pump barrel or the pump handle rises when unlocked on your Lesco Paint Sprayer, it may be caused by dirt or debris under the check valve on the pump, or a chipped, torn, or swollen pump check valve. Clean the check valve and valve sealing surface on the pump. If the check valve is damaged, replace it as described in the Pump Disassembly & Reassembly section.
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Dillon HughesAug 31, 2025
What to do if Lesco Pump Sprayer Paint Sprayer hose leaks at the tank or shut-off?
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  Elizabeth MaddenAug 31, 2025
  If the hose on your Lesco Paint Sprayer leaks at the tank or shut-off, it could be due to a loose hose or a cracked, swollen, or faulty hose. Try tightening the hose nut. If that doesn't solve the problem, replace the shut-off assembly.
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amy85Sep 3, 2025
Why does Lesco Pump Sprayer start spraying when pumping or not stop when shut-off lever is released?
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  Jamie WangSep 3, 2025
  If your Lesco Paint Sprayer starts to spray when pumping or does not stop spraying when the shut-off lever is released, the shut-off lock is likely engaged. Squeeze the shut-off lever and rotate the lock towards the nozzle as described in the Spraying and Locking section.
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David MccallSep 7, 2025
What to do if Lesco Paint Sprayer tank leaks?
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  Mark AndersonSep 7, 2025
  If there is evidence of spray material escaping from the tank of your Lesco Paint Sprayer, replace the entire sprayer.