Graco 17E827 GMAX II 3900 Standard Series Gas Airless Sprayer, Hi-Boy

Graco 17E827 GMAX II 3900 Hi-Boy offers powerful performance and reliability for professional painting contractors, ideal for large residential or commercial projects.

Engine: Honda GX120 (120cc)
Pressure: Up to 3,300 PSI
Flow Rate: 1.25 GPM — supports dual-gun use
SmartControl 3.0 for consistent spray pressure
Endurance Chromex Pump with ProConnect 2 quick-change system
Hi-Boy Frame for easy drum access and mobility

Retail Price: $8550

You save: $2311 (27.03%)

Our Price: $6239

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Description

High Performance Gas Airless Sprayer for Professional Finishing

Compatible Machines

Graco GMAX II 3900 Lo-Boy — same performance and components, different frame height.
Graco GMAX II 5900 — compatible with hoses, tips, and pump parts.
Graco GMAX II 7900 — shares accessories and maintenance parts.
Graco GMAX 3400 — limited compatibility in tips and spray hoses.
Other Graco Gas Airless Sprayers using RAC X tips, BlueMax II hoses, and QuikPak/ProConnect pump parts.

Overview

Graco 17E827 GMAX II 3900 Standard Series Gas Airless Sprayer, Hi-Boy is a professional-grade sprayer built for contractors who need consistent power and high performance on large projects. It features advanced pressure control, a reliable Honda engine, and a high-mount design for easy drum feeding and mobility across rugged job sites.

Key Specifications

Engine Type	Honda GX120 (120cc)
Maximum Working Pressure	3,300 PSI (22.8 MPa)
Maximum Flow Rate	1.25 GPM (4.73 L/min)
Maximum Tip Size	0.036" (Single Gun) / 0.023" (Dual Gun)
Pump Type	Endurance Chromex Pump with ProConnect 2 quick-change system
Pressure Control	SmartControl 3.0 for precise and consistent pressure output
Frame Type	Hi-Boy Frame — ideal for easy drum access and job site maneuverability
Included Accessories	Contractor PC Gun, RAC X Tip, 50 ft BlueMax II Hose, Tip Guard, TSL 4 oz
Dimensions (L × W × H)	Approx. 47" × 24" × 39"
Weight	Approx. 106 lbs (48 kg)

Key Features

Hi-Boy Frame makes drum feeding faster and more convenient.
SmartControl 3.0 ensures smooth spray patterns and reduced pressure fluctuations.
ProConnect 2 allows quick, tool-free pump replacement on-site.
Honda GX120 Engine provides dependable, powerful operation on any job.
Supports dual-gun spraying for large-scale projects.
Designed for use with latex, acrylics, primers, and enamels.

Frequently Asked Questions

The Hi-Boy model features a taller frame for direct drum access and easier mobility, while the Lo-Boy design has a lower center of gravity for added stability during transport.

Yes, the Graco GMAX II 3900 Hi-Boy supports dual-gun spraying, making it ideal for covering large areas quickly.

It can handle a wide variety of coatings, including latex paints, acrylics, primers, and enamels, suitable for residential, commercial, and industrial applications.