Welcome to Graco Garage

Tech Advice from the Pros

Basics of Airless Spraying

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Big Rigs/Roof Rigs

Silicone Best Practices

Contractor Gun

The Gun is Spitting

Endurance Pump

Pump Rebuild

FinishPro HVLP Sprayers

How to Use SmartStart

Troubleshooting Potentiometers

G-Force II Pressure Washers

Low Pressure

Cavitation - Part 1

Cavitation - Part 2

Unloaders & Thermal Valves

4040HC-BD Seal Maintenance

4040HC-BD Valve Maintenance

4040HC-DD Seal Maintenance

4040HC-DD Valve Maintenance

GH Sprayers

Motor Will Not Run

GMAX Sprayers

Clutch Will Not Engage & Pump Will Not Stroke

Large GMAX Troubleshooting CodesĀ 

Pinion Housing Testing

Electrical Troubleshooting

Clutch Not Engaging & Engine Voltage

LineLazer Line Stripers

Displaying Incorrect Distance

Pump Rebuilds

T-MAX 6912 Pump Rebuild

Handheld Pump Replacement

Repack Pump with QuikPak

RTX Texture Sprayers

Unit Cycling

Sprayer Won't Run

Low Output

Sprayer Running Continuously

RTX 2000/2500 Flow Switch Installation

RTX 5000/5500 Flow Switch Installation

Sprayer Won't Shut Off

Tips & Guards

How To Replace OneSeal Tip Gasket

ThermoLazer Thermoplastic Line Stripers

Check for Propane Leaks


Over Temp Switch Service

Regulator Service

Gas Safety Valve Service

Pulse Igniter Service

Thermopile Service

Electrode Service

Burner Plate Assembly Service

Temperature Control Service

Start Up

Ultra Electric Sprayers

Small Electric Troubleshooting Codes

Large Electric Troubleshooting Codes

Troubleshooting a Brushed DC Motor

Troubleshooting a Brushless DC Motor

How to Use a Multimeter

Troubleshooting Power Cords and Switches

Troubleshooting Potentiometers

Troubleshooting the Transducer

Endurance Pump Rebuild

Ultra Handheld Sprayers

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Sprayer Won't Spray