The GRACO 17E827 GMAX II 3900 Standard Series Gas Airless Sprayer, Hi-Boy is a professional-grade, gas-powered airless paint sprayer designed for contractors who require high productivity and versatility. It is constructed with durable materials for heavy-duty use and is intended for spraying a wide variety of coatings on large surfaces efficiently.
Key Features:
Gas Airless Sprayer
GMAX II 3900 Standard Series, Hi-Boy
Heavy-duty cart design, robust pump and engine housing
1.25 gallons per minute
0–3300 psi
Compatible with up to two spray guns; includes Contractor PC Gun, RAC X LP 517 Spray Tip, RAC X Guard, 1/4 in x 50 ft BlueMax II Airless Hose
Endurance Chromex Pump for reliability and longevity
SmartControl 3.0 for all-day comfort and control
QuikPak Cartridge System for fast pump repacking
QuikChange pump design for easy pump swapping
QuikAccess intake foot valve for faster cleaning
Lightest weight gun in its class with up to 50% lighter trigger pull force
E-Z Fit adjustable trigger length
No-tools gun rebuild with ProConnect cartridge
Heavy-duty prime valve
Durable cart design
Applications: Ideal for professional contractors spraying a wide variety of coatings on large surfaces, including exterior and interior walls, fences, decks, and other structures. Suitable for use in construction, painting, and maintenance industries.
Installation Notes:
Using genuine GRACO parts ensures optimal performance, safety, and longevity of the equipment. Non-genuine parts may compromise spray quality and equipment reliability.
Follow the manufacturer’s instructions for assembly and setup
Ensure all hoses and fittings are securely connected before operation
Use only recommended accessories and replacement parts
Regularly inspect and maintain the pump, hoses, and spray gun for wear and tear
Refer to the product manual for detailed maintenance schedules and troubleshooting
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