Graco LineLazer v 5900 User Manual (English)

Questions and Answers:

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Alyssa CuevasAug 21, 2025
Why won't my Graco LineLazer v 5900 Paint Sprayer engine start?
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  Willie SanchezAug 21, 2025
  Your Graco Paint Sprayer engine may not start due to several reasons: the engine switch might be OFF, so turn it ON. The engine could be out of gas, so refill the gas tank. The engine oil level might be low, so replenish oil if necessary. The spark plug cable might be disconnected or damaged, so connect or replace the spark plug. If it's a cold engine, use the choke. The fuel shutoff lever might be OFF, so move it to the ON position. Oil might be seeping into the combustion chamber, so remove the spark plug, pull the starter 3 to 4 times, clean or replace the spark plug, and start the engine, keeping the sprayer upright to avoid oil seepage.
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Amanda AcevedoAug 25, 2025
What to do if Graco Paint Sprayer is difficult to prime?
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  Susan FisherAug 25, 2025
  If your Graco paint sprayer is difficult to prime, here are a few things to check. Make sure there's no air in the pump or hose by checking and tightening all fluid connections, and reduce engine speed to cycle the pump as slowly as possible during priming. Inspect the intake valve for leaks and clean it, ensuring the ball seat isn't nicked or worn and that the ball seats well before reassembling the valve. If the pump packings are worn, replace them. If the paint is too thick, thin it according to the supplier’s recommendations. Finally, ensure the engine speed isn't too high by decreasing the throttle setting before priming the pump.
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phillip70Aug 26, 2025
What to do if I see excessive paint leakage into the throat packing nut of my Graco Paint Sprayer?
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  Michael ClarkAug 27, 2025
  If you notice excessive paint leakage into the throat packing nut of your Graco paint sprayer, it could be that the throat packing nut is loose, so remove the throat packing nut spacer and tighten the throat packing nut just enough to stop the leakage. Another reason could be that the throat packings are worn or damaged, so replace the packings. Finally, the displacement rod might be worn or damaged, so replace the rod.
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Jennifer WatsonAug 29, 2025
What to do if my Graco LineLazer v 5900 engine operates, but displacement pump does not?
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  mthomasAug 29, 2025
  If the engine of your Graco paint sprayer operates, but the displacement pump does not, verify the pump switch is ON. Increase the pressure by turning the pressure adjusting knob clockwise. Clean the fluid filter if it is dirty. Clean the tip or tip filter if clogged. If the displacement pump piston rod is stuck due to dried paint, repair the pump. Replace the connecting rod if it is worn or damaged. Replace the drive housing if it is worn or damaged. Check the wiring connections if electrical power is not energizing the clutch field. Replace the clutch if it is worn, damaged, or incorrectly positioned. Repair or replace the pinion assembly if it is worn or damaged.
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robertkelleyAug 31, 2025
Why is the line spacing not accurate on my Graco LineLazer v 5900?
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  Beth DuranAug 31, 2025
  If the line spacing is not accurate on your Graco Paint Sprayer, the wrong line pattern might be loaded, so reload the correct pattern. Alternatively, the machine might be out of calibration, so calibrate the machine.
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Brittany JohnsonSep 2, 2025
What to do if my Graco Paint Sprayer battery won’t stay charged?
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  Samuel JacksonSep 2, 2025
  If your Graco Paint Sprayer battery won’t stay charged, consider these potential causes: Accessories might be left on, draining the battery when the unit is not running, so turn off accessories when the machine is not in use. The throttle might not be set high enough, so ensure the engine is running above 3300 rpm NO LOAD for proper power supply. Power consumption from accessories might be higher than engine output, so reduce accessories or charge the battery when necessary. There might be broken or disconnected wiring, so check the wiring and repair or replace wires if necessary. The charger might not be working, so check the charging state in diagnostics to see if the charger is properly working and replace the board if needed.
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Jill RodriguezSep 3, 2025
What to do if my Graco LineLazer v 5900 Paint Sprayer's auto gun won't shut off?
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  tjohnsonSep 3, 2025
  If the auto gun on your Graco paint sprayer won't shut off, the cable might be kinked, so repair or replace the cable. The solenoid might be jammed, so lubricate the solenoid plunger and check for solenoid damage. A needle in the gun might be clogged, so clean out the gun.
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Jamie ShortSep 5, 2025
Why is the gallon (liter) counter not adding fluid volume on my Graco Paint Sprayer?
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  Lisa MillerSep 5, 2025
  If the gallon (liter) counter is not adding fluid volume on your Graco paint sprayer, the fluid pressure might not be high enough, so ensure it is over 800 psi (55 bar) for the counter to add. There might be a broken or disconnected pump counter wire, so check the wires and connections and replace any broken wires. A magnet might be missing or damaged, so reposition or replace the magnet on the pump. The sensor might be bad, so replace the sensor.
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princewendySep 7, 2025
Why is my Graco LineLazer v 5900 operating, but the display does not?
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  Jessica WallaceSep 7, 2025
  If your Graco paint sprayer operates, but the display does not, it could be due to a bad connection between the control board and the display, so remove the display and reconnect it. Alternatively, the display might be damaged, so replace the display.
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gallowayemilySep 8, 2025
Why is the distance not adding properly on my Graco LineLazer v 5900?
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  Michael NelsonSep 8, 2025
  If the distance is not adding properly on your Graco paint sprayer (measure mode will be inaccurate and speed will be wrong), the machine might not be calibrated, so perform the calibration procedure. The rear tire pressure might be too low or too high, so adjust the tire pressure to 55 +/- 5 psi (380 +/- 34kPa). Gear teeth might be missing or damaged (right side when standing on the platform), so replace the distance gear/wheel hub. The distance sensor might be loose or broken, so reconnect or replace the sensor.