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.Work Smarter, Finish More Jobs. Graco GMAX ProContractor Series gas-powered airless paint sprayers are designed to deliver speed & performance so you can get to the next jobsite faster and increase your profits.

• Endurance Vortex MaxLife Piston Pump
  • Superior pump life
  • Breakthrough vortex rotating rod technology
  • Repack the pump in minutes with the new QuikPak Cartridge System
  • Lasts 6X longer between repacks with innovative MaxLife technology
  • Oversized passages for high velocity flow to rotate piston for even wear
  • Repack pump in minutes with new QuikPak cartridge repair system
• ProConnect 2 Pump Replacement System
  • Pump swaps in 1-minute or less – no tools, pins or parts to lose
  • Eliminate costly downtime
• QuikReel Hose Management System
  • Easy hose management
  • Deploy and rewind up to 300 feet (90 meters) of hose in seconds
  • No twisting, kinking, and coiling
  • Use only the hose you need — the rest stays on the reel
• Crushproof Inlet Strainer
  • Durable filtration
  • Stands up to harsh impacts to maintain even flow through filter
• 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
• WatchDog Pump Protection System
  • Automatically prevents pump damage if material supply is too low
• Precision Advantage Drive
  • The longest lasting drive
  • Improved jobsite conditions with extremely quiet operation
  • Lifetime Warranty
• 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
• Additional Features:
  • Easy Out Pump Filter
  • Heavy-Duty Prime Valve
  • LED Display
  • Rugged, Durable Cart Design

Technical Specifications

CONVERT TO METRIC

Compatible Material	Primers, Stains, Acrylics, Enamel, Latex, Interior Paint, Exterior Paint
Compatible Replacement Pump	17H823
Convertible	Non-Convertible
Engine Brand	Honda
Engine Size (HP)	4
Features	Endurance Vortex MaxLife Pump, SmartControl 3.0, QuikReel, Honda Engine, Advantage Drive, ProConnect 2, LED Display, Easy Out Filter, Crushproof Inlet Strainer, WatchDog, Contractor PC Gun
Filter Mesh Size	60
Fluid Hose Inside Diameter (in)	1/4
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
Hose Reel Type	QuikReel
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 Fluid Working Pressure (psi)	3300
Maximum Hose Length (ft)	100
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	1
Outlet Paint Filter	60 Mesh Stainless Steel Screen
Overall Height (in)	38.3
Overall Length (in)	32.3
Overall Width (in)	24.4
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	ProContractor
Pump Mount Type	ProConnect 2
Pump Rod Type	MaxLife
Pump Sleeve Material	MaxLife
Pump Type	Endurance Vortex
Recommended Annual Usage	Up to 500 gallons per week
Series	3900
Spray Gun Type	Contractor PC Pro Gun
Spray Type	Airless
Type	Airless Sprayer
Weight (lb)	133
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 

3A6583A, 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
240794	BlueMax II Airless Hose, 1/4 in x 50 ft
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
16Y759	KIT, REPAIR, TUBE, SUCTION, 39/59