Producing 65% more performance than the GMAX 3400, the GMAX II 3900 has the power and flow to handle up to two guns and is ideal for the professional contractor who sprays a wide variety of coatings.Everyday Reliability. Graco GMAX Standard Series gas-powered airless paint sprayers deliver unmatched durability and performance, with the capability to handle the widest range of tip sizes, longer hose lengths and heavier coatings with ease.

• Endurance Chromex Piston Pump
  • The most reliable pump
  • Lasts 2X longer than the next leading brand
  • Repack the pump in minutes with the new QuikPak Cartridge System
  • QuikChange pump design allows you to swap the pump easily on the job
  • Faster cleaning with the QuikAccess intake foot valve
• SmartControl 3.0
  • Consistent spray fan & pressure control
  • Handles the widest range of coatings with the most consistent fan pattern
  • Lowest dead band at any pressure
• Precision Advantage Drive
  • The longest lasting drive
  • Hardened steel gears provide extremely quiet operation
  • Lifetime Warranty
• Easy Out Pump Filter
  • Easy maintenance & less clogging
  • Exclusive inside-out filtering won’t collapse to ensure a quality finish
  • Vertical design for less mess
• Heavy-Duty Prime Valve
  • Maintenance-free design withstands high-pressure dumping
• Durable Cart Design
  • Rugged and easy-to-maneuver
  • Thick chrome over steel and pneumatic wheels for tough jobsite conditions
  • Retractable handle doubles as coiled hose storage
• Honda® Engine
  • Reliable, powerful & easy-to-start
  • Oil Alert shuts down engine to prevent damage if oil level drops too low
  • Contractor Preferred
• Contractor PC Spray Gun
  • All-day comfort & control
  • Lightest weight gun in its class
  • Up to 50% lighter trigger pull force
  • E-Z Fit adjustable trigger length
  • Complete gun rebuild in seconds with ProConnect cartridge
  • More info: graco.com/ContractorPC
• Jobsite Ready
  • Includes RAC X SwitchTip and 50 ft of BlueMax II hose

Technical Specifications

CONVERT TO METRIC

Convertible	Non-Convertible
Engine Brand	Honda
Engine Size (HP)	4
Features	Endurance Chromex Pump, SmartControl 3.0, Honda Engine, Advantage Drive, Easy Out Filter, Heavy-Duty Prime Valve, Contractor PC Gun
Fluid Inlet Size (in)	1-5/16
Fluid Inlet Thread Type	UN-2A
Fluid Outlet Size (in)	1/4
Fluid Outlet Thread Type	NPSM
Frame Configuration	Hi-Boy
Hose Inlet Diameter (in)	1/4
Includes	Contractor PC Gun, RAC X LTX 517 Spray Tip, RAC X Guard, 1/4 in x 50 ft BlueMax II Airless Hose, TSL 4 oz
Inlet Paint Strainer	8 Mesh Stainless Steel Screen
Maximum Flow Rate (GPM)	1.25
Maximum Sound Pressure Level (dB(A))	96
Maximum Tip Size (in)	0.036
Maximum Tip Size 1 Gun (in)	0.036
Maximum Tip Size 2 Guns (in)	0.023
Maximum Working Pressure (MPa)	22.8
Maximum Working Pressure (psi)	3300
Model	GMAX II
Number of Guns	2
Outlet Paint Filter	60 Mesh Stainless Steel Screen
Overall Height (in)	40.8
Overall Length (in)	38.3
Overall Width (in)	22.3
Power Rating (HP)	4.0
Power Rating (W)	2982.8
Power Rating (kW)	2.98
Power Source	Gas
Pressure Control Type	SmartControl 3.0
Product Series	Standard
Pump Mount Type	QuikChange
Pump Rod Type	Chromex
Pump Sleeve Material	Stainless Steel
Pump Type	Endurance
Recommended Annual Usage	Up to 500 gallons per week
Series	3900
Type	Airless Sprayer
Weight (lb)	106
Wetted Material	Acetal, Aluminum, Chrome Plating, Fluoroelastomer, Leather, Nylon, PTFE, Polyurethane, Stainless Steel, Tungsten Carbide, UHMWPE, Zinc-Plated Carbon Steel, Nickel-Plated Carbon Steel

SHOW FEWER SPECIFICATIONS

Product Manuals

3A6400B, GMAX 3400, GMAX II 3900/5900/7900, and TexSpray 5900HD/7900HD Airless Sprayers, Operation, English (7 MB)

English 

3A6417G, GMAX™ 3400, GMAX™ II 3900/5900/7900, and TexSpray 5900HD/7900HD Airless Sprayers, Parts, English (4 MB)

(English Only)

3A6285H, Manual, Contractor PC Spray Guns, Operation, Parts, Repair, English (3 MB)

English 

3A6584A, Manual, Displacement Pump, Repair, English (2 MB)

(English Only)

3A6418A, GMAX 3400™, GMAX™ II 3900/5900/7900, and TexSpray 5900HD/7900 HD Airless Sprayer Manuals, Collation, English (600 KB)

(English Only)

Warranty

Graco CED Warranty (89 KB)

(English Only)

Sales Literature

344383EN-F.pdf (4 MB)

English 

Certifications

199810H, GMAX 3400, 3900, 5900, 7900, TexSrayer 5900HD & 7900HD, EU-Declaration of Conformity (164 KB)

What’s Included

PART NO.	DESCRIPTION	QTY	UNIT
17Y042	Contractor PC Airless Spray Gun with RAC X 517 SwitchTip	1	ea
LTX517	RAC X SwitchTip, 517	1	ea
246215	RAC X HandTite Tip Guard	1	ea
240794	BlueMax II Airless Hose, 1/4 in x 50 ft	1	ea
238049	TSL Throat Seal Liquid, 4 oz	1	ea

Repair Parts

PART NO.	DESCRIPTION
244068	Easy Out Pump Manifold Filter, Long, 100 mesh
244069	Easy Out Pump Manifold Filter, Long, 200 mesh
244071	Easy Out Pump Manifold Filter, Long, 30 mesh
244067	Easy Out Pump Manifold Filter, Long, 60 mesh
24U917	HOSE,SUCTION, 30 / 50 GALLON
17A095	KIT, REPAIR, CONTROL BOARD, GMAX
257352	Q KIT, REPAIR, PRIME VALVE, HD
243222	Pressure Control Transducer Repair Kit
16Y760	KIT, REPAIR, TUBE, SUCTION, 7900
15C980	NUT, JAM