Engine Driven Multi-Function Piston

WorkMaster GW

WorkMaster GW


The WorkMaster GW

14HP Single Stage Two Cylinder Portable Gas Compressor/Generator/Welder
A unique multi-function Gas piston 13 CFM (Delivered), 150 AMP Welder and 4.0kW Generator that is ideal for the entry level mechanic and contractor industry!

• KOHLER CH440 Engine Equipped with Electric-Start Capabilities
• Automatic Engine Idle for Fuel Economy and Long Service Life
• Atmospheric Unloading System to Help Reduce Fuel Consumption
• Rubber Engine Oil Drain Extension
• Simple Belt Tensioning
• 1/2” Shut-Off Valve
• Finned Aftercooler
• Stainless-Steel Reed Valves
• Heavy-Duty Steel Belt Guard Base
• Heavy-Duty Single Stage Pump with Cast-Iron Cylinder
• ASME Safety Relief Valve
• IP23 Rating
• Intake Filter with Silencer and Replaceable Element
• Remote Air Tank Options - 10, 22 and 28 gallon


BOSS® Quality, Heavy-Duty, Single Stage, Ball Bearings, Cast- Iron Twin Cylinders, Cast-Iron Valve Plates with Swedish Lamellar Reed Valves, Aluminum Alloy Connecting Rods with Automotive-Style Inserts, Multi-Finned 11” Flywheel, Oil Sight Gauge and Splash Lubrication. 

Performance @ 100 psi
Cu. Ft. Displaced - 17.9 cfm. Cu. Ft. Delivery - 13.1 cfm


Standard Power Source
14 HP Kohler 4-cycle, slant cylinder design, with cast iron cylinder bore and overhead valve for easy access. The Quad-Clean™ 4-stage air filtration system ensures only clean air enters the engine.

Optional Power Source
13 HP Honda GX390 4 Cycle, Complete Die Cast Aluminum Alloy with Cast-Iron Sleeve, Overhead Valves, Electric Start* with
Retractable Start Back-up, Splash Lubricated, Low Oil Shutdown

Two pole direct-current brushes rotating welder. Auto resettable thermal overload breaker for welder protection.

Welder Performance
100% @ 150Amps. 65% @ 180Amps. 10% @ 210Amps

Generator Performance
4.0kW AC continuous output

(2) 15Amp Circuit Breakers. (1) GFCI Duplex 20A. (1) L13-20 (120/240V twist). (1) Voltmeter.

L50” x W21” x H23”

400lbs. (Wet)

Warranty 1 Year

Additional Resources