Graco LineLazer IV 5900

Other manuals for Graco LineLazer IV 5900

Repair And Parts38 pages

Repair Parts List38 pages

Important Safety Instructions36 pages

Questions and Answers

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Michael EricksonNov 23, 2025
What to do if Graco LineLazer IV 5900 Construction Equipment pump output is low?
- L
  Lisa WarrenNov 23, 2025
  If the pump output on your Graco Construction Equipment is low, consider the following: * The strainer is clogged: Clean the strainer. * The piston ball is not seating: Service the piston ball. * The piston packings are worn or damaged: Replace the packings. * The O-ring in the pump is worn or damaged: Replace the O-ring. * The intake valve ball is not seating properly or is packed with material: Clean the intake valve. * The engine speed is too low: Increase the throttle setting. * The clutch is worn or damaged: Replace the clutch. * The pressure setting is too low: Increase the pressure. * The fluid filter, tip filter, or tip is clogged or dirty: Clean the filter. * There is a large pressure drop in the hose with heavy materials: Use a larger diameter hose and/or red...
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Derek FryeAug 26, 2025
What to do if fluid is spitting from my Graco LineLazer IV 5900 Construction Equipment gun?
- S
  Sydney MartinAug 27, 2025
  If fluid is spitting from the gun of your Graco Construction Equipment, here are a few things to check: * There's air in the pump or hose: Check and tighten all fluid connections, then reprime the pump. * The tip is partially clogged: Clear the tip. * The fluid supply is low or empty: Refill the fluid supply and prime the pump. Make sure to check the fluid supply often to prevent the pump from running dry.
C
Christopher OrtizAug 27, 2025
What to do if I see excessive paint leakage into the throat packing nut of my Graco LineLazer IV 5900 Construction Equipment?
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  Jennifer DickersonAug 27, 2025
  If you notice excessive paint leakage into the throat packing nut of your Graco Construction Equipment, try these solutions: * The throat packing nut is loose: Remove the throat packing nut spacer and tighten the throat packing nut just enough to stop the leakage. * The throat packings are worn or damaged: Replace the packings. * The displacement rod is worn or damaged: Replace the rod.
D
Donald ObrienAug 28, 2025
What to do if my Graco LineLazer IV 5900 pump is difficult to prime?
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  Donna ScottAug 28, 2025
  If you're having trouble priming the pump on your Graco Construction Equipment, consider the following: * There's air in the pump or hose: Check and tighten all fluid connections. Reduce engine speed and cycle the pump as slowly as possible during priming. * The intake valve is leaking: Clean the intake valve, ensuring the ball seat is not nicked or worn and that the ball seats well. Reassemble the valve. * The pump packings are worn: Replace the pump packings. * The paint is too thick: Thin the paint according to the supplier’s recommendations. * The engine speed is too high: Decrease the throttle setting before priming the pump.
C
Christopher KempNov 24, 2025
What to do if my Graco LineLazer IV 5900 engine operates, but displacement pump doesn't?
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  Kelly CookNov 24, 2025
  If your Graco Construction Equipment engine operates, but the displacement pump does not, check the following: * The pump switch is OFF: Turn the pump switch ON. * The pressure setting is too low: Turn the pressure adjusting knob clockwise to increase pressure. * The fluid filter is dirty: Clean the filter. * The tip or tip filter is clogged: Clean the tip or tip filter. * The displacement pump piston rod is stuck due to dried paint: Repair the pump. * The connecting rod is worn or damaged: Replace the connecting rod. * The drive housing is worn or damaged: Replace the drive housing. * Electrical power is not energizing the clutch field: Check wiring connections. With the pump switch ON and pressure turned to MAXIMUM, use a test light to check for power between clutch test...
H
Haley PerkinsSep 15, 2025
What to do if the distance counter is not operating properly on my Graco Construction Equipment?
- A
  Angela ChurchSep 15, 2025
  If the distance counter on your Graco Construction Equipment is not operating properly, the trigger sensor might not be set correctly. Check the connector and reconnect if there are bad wiring connections. It could also be that the gear teeth are missing or damaged (replace the distance gear/wheel), or the wire is cracked or broken (replace the sensor).
C
Casey WardSep 13, 2025
What to do if the gallon counter is not working on my Graco Construction Equipment?
- J
  Janice CookSep 13, 2025
  If the gallon counter on your Graco Construction Equipment isn't working, check for broken or disconnected wires (check wires and connections, replace broken wires). It could also be due to a bad sensor (replace the sensor) or a missing magnet (reposition or replace the magnet).
R
ronaldwalkerSep 14, 2025
What to do if the sprayer operates, but the display does not on my Graco Construction Equipment?
- J
  Jason WatsonSep 14, 2025
  If your Graco Construction Equipment sprayer operates but the display doesn't, it could be due to a bad connection between the control board and the display (remove the display and reconnect it). Alternatively, the display might be damaged (replace the display).
M
Mrs. Jennifer SotoSep 6, 2025
How to fix spray icon not showing on Graco LineLazer IV 5900 Construction Equipment display when fluid is sprayed?
- K
  kathryn04Sep 6, 2025
  If the spray icon does not appear on the display when fluid is sprayed from your Graco Construction Equipment, check the following: * Loose connector: Check the connector and reconnect it. * Interrupter is improperly positioned: Turn the screw counterclockwise until the spray icon synchronizes with fluid spray. * Reed switch assembly is damaged: Replace the reed switch assembly. * Magnet on assembly is missing: Replace the reed switch assembly. * Cut or sliced wire: Replace the distance sensor harness. * Control board is damaged: Replace the control board. * Display is damaged: Replace the display.
M
Michael RiveraSep 4, 2025
What causes fluid spray to start after spray icon on Graco LineLazer IV 5900 display?
- R
  Rebecca TaylorSep 4, 2025
  If the fluid spray starts after the spray icon is shown on the display of your Graco Construction Equipment, it's likely that the interrupter is improperly positioned. Turn the screw counterclockwise until the spray icon synchronizes with the fluid spray.

Summary

Operation and Safety

Important Safety Instructions

General safety warnings for setup, use, grounding, maintenance, and repair.

General Safety Warnings

Fire, Explosion, and Chemical Hazards

Details risks associated with flammable fumes, solvents, and specific chemicals.

Operational and Mechanical Hazards

Covers misuse hazards, burn risks, and dangers from moving parts.

Personal Protective Equipment

Emphasizes the need for appropriate PPE to prevent serious injury.

Setup Procedures

Startup Procedures

Engine Start and Initial Settings

Initiates engine startup and sets initial operational parameters.

System Priming and Flushing Setup

Details system priming, flushing, and leak checks.

Gun Placement and Handling

Trigger Sensor Adjustment

Adjusting Trigger Sensitivity

Details how to adjust the trigger sensor for synchronized spray.

Clearing Tip Clogs

Procedure for Clearing Clogs

Step-by-step guide for clearing spray tip obstructions.

Auto-Layout System Operation

System Power-Up Sequence

Instructions for powering up the Auto-Layout system and initial settings.

Auto-Layout System Calibration

Completing and Verifying Calibration

Finalizes calibration and provides steps to verify accuracy.

Auto-Layout Measure Mode

Navigating Measure Mode

Instructions for entering Measure Mode and navigating displays.

Auto-Layout Parking Mode

Calculating Stalls and Marking Dots

Auto-Layout Angle Stalls

Inputting Angle Stall Parameters

Auto-Layout Double Mode

Configuring Double Mode

Auto-Layout Road Mode

Road Mode Display and Presets

Configuring Road Mode Settings

Road Mode Operation

Gun Mounting and Spraying Procedure

Changing Units and Displays

Pressure Relief Procedure

Steps for Safe Pressure Relief

Detailed steps for safely relieving pressure in the system.

Cleanup Procedure

Initial Cleanup Steps

Graco LineLazer IV 5900 Specifications

General

Engine	Honda GX160
Engine Displacement	163 cc
Hose Length	50 ft
Power Source	Gasoline
Max Operating Pressure	3300 psi
Flow Rate	1.5 gpm
Line Width	2-12 inches
Material Flow Rate	1.5 gpm