Troubleshooting

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 8.

1.Relieve the pressure.

2.Check all other possible remedies before disas- sembling the pump.

PROBLEM

CAUSE

SOLUTION

 

 

 

The pump fails to operate.

Dirty or worn air motor.

Clean, service; see the separate motor

 

 

manual 307456.

 

 

 

 

Inadequate air supply or restricted

Clean lines or increase the air supply

 

lines.

(see Technical Data).

 

 

 

 

Closed or clogged air valves.

Open or clear the valves.

 

 

 

 

Clogged fluid hose or valve.

Clear the hose or valves.

 

 

 

 

Worn or damaged valves or seals.

Service the valves or seals.

 

 

 

The pump operates, but the output

Clogged fluid hose or valve.

Clear the hose or valves.

is low on both strokes.

 

 

 

 

 

 

Exhausted fluid supply.

Refill the fluid supply and reprime the

 

 

pump.

 

 

 

 

Worn or damaged valves or seals.

Service the valves or seals.

 

 

 

The pump operates, but the output

Held open or worn intake valve.

Clear or service the valve.

is low on the downstroke.

 

 

 

 

 

 

Worn or damaged valves or seals.

Service the valves or seals.

 

 

 

The pump operates, but the output

Held open or worn piston valve.

Clear or service the valve.

is low on the upstroke.

 

 

 

 

 

 

Worn or damaged valves or seals.

Service the valves or seals.

 

 

 

Erratic or accelerated operation.

Exhausted fluid supply.

Refill the fluid supply and reprime the

 

 

pump.

 

 

 

 

Broken air motor compression spring.

Replace the spring.

 

 

 

10 307427

Page 9 Page 11
Page 10
Image 10
Graco 03761B dimensions Troubleshooting, Problem Cause Solution
Page 9 Page 11

03761B specifications

The Graco 03761B is a high-performance airless paint sprayer designed to simplify the painting process for both homeowners and professionals. Renowned for its efficiency and ease of use, this sprayer is a go-to tool for delivering a smooth and even finish on a variety of surfaces.

One of the standout features of the Graco 03761B is its powerful motor. It is equipped with a robust electric motor that delivers consistent pressure, enabling the user to apply paint with precision. This feature allows for effective coverage, ensuring that every nook and cranny gets painted without any blotches or inconsistencies. The motor provides a flow rate of up to 0.34 gallons per minute, which translates to faster job completion, ultimately saving both time and effort.

The Graco 03761B utilizes advanced technologies such as the ProXChange Pump, which allows for fast and easy pump replacement on the job site. This innovation minimizes downtime, ensuring the project stays on schedule. Additionally, the airless jet technology allows users to apply coatings without the need for air compressors, reducing the equipment's weight and improving portability.

Another key characteristic of the 03761B is its adjustable pressure settings. Users can easily control the pressure to suit the type of paint and surface being sprayed. This flexibility provides the ability to tackle a wide range of applications, from fine detail work on furniture to large wall or fence projects.

The gun designed for this model is user-friendly, featuring a comfortable grip that reduces fatigue during prolonged use. The model also includes a reversible tip, which allows the user to quickly clear clogs without losing valuable work time.

The Graco 03761B is also designed with durability in mind. Its robust construction ensures that it can withstand the rigors of regular use, making it a reliable companion on job sites or during home improvement projects.

In summary, the Graco 03761B is a powerful, efficient, and versatile airless paint sprayer. With features like a strong motor, ProXChange pump system, adjustable pressure settings, and user-friendly design, it offers exceptional value for anyone looking to achieve a professional-quality finish with ease. Whether for a DIY enthusiast or a painting contractor, the Graco 03761B stands out as a top choice in the airless spray market.
Top Page Image Contents