Graco LineLazer III 3900 User Manual (English)

Other manuals for Graco LineLazer III 3900

Questions and Answers:

M
Marc RichardSep 6, 2025
Why is the pump output low on my Graco LineLazer III 3900 Construction Equipment?
- A
  Annette StevensSep 7, 2025
  If the pump output is low on your Graco Construction Equipment, consider these potential causes and solutions: * The strainer may be clogged: Clean the strainer. * The pressure setting may be too low: Increase pressure. * The fluid filter, tip filter, or tip may be clogged or dirty: Clean the filter. * There might be a large pressure drop in the hose with heavy materials: Use a larger diameter hose and/or reduce the overall length of the hose. Note that using more than 100 ft of 1/4 in. hose significantly reduces sprayer performance; use 3/8 in. hose for optimum performance (50 ft minimum).
T
Tina BrownSep 8, 2025
What to do if the engine operates, but the displacement pump does not operate on my Graco LineLazer III 3900 Construction Equipment?
- A
  Amy DavisSep 8, 2025
  If the engine operates but the displacement pump does not operate on your Graco Construction Equipment, check the following: * Pump switch is OFF: Turn pump switch ON. * Pressure setting is too low: Turn the pressure adjusting knob clockwise to increase pressure. * Fluid filter is dirty: Clean the filter.
J
Jeremy FisherSep 9, 2025
Why is fluid spitting from the gun of my Graco LineLazer III 3900 Construction Equipment?
- E
  Erica AndersonSep 9, 2025
  If fluid is spitting from the gun of your Graco Construction Equipment, consider these possibilities: * There might be air in the pump or hose: Check and tighten all fluid connections. * The tip might be partially clogged: Clear the tip. * The fluid supply might be low or empty: Refill the fluid supply. Check the fluid supply often to prevent running the pump dry.
M
mfarmerSep 10, 2025
What to do if the pump is difficult to prime on my Graco LineLazer III 3900 Construction Equipment?