Miller Blue Star 185 Gas Welder Generator, Stick/DC TIG, 6,200W, Kohler, 907664
The Miller Blue Star 185 is a compact gas welder generator for stick and DC TIG welding, rated 185 A at 25 V and a 20% duty cycle. A 13.4 hp Kohler gasoline engine with electric start supplies 6,200 W continuous and 6,500 W peak single-phase power for farm and ranch, maintenance and hobby work.
This engine-driven welder delivers 185 A at 25 V with a 20% duty cycle, or 150 A at 25 V with a 100% duty cycle, across a 60-195 A range for stick (SMAW) and DC TIG (GTAW) on steel and stainless steel. The Kohler engine idles at 2500 RPM and runs at 3600 RPM while welding, auto-idle and an engine hour meter are built in, and the tank holds 6.25 gallons. Weld and generator outputs are rated at 104°F (40°C).
As a welder/generator it powers tools through 120 VAC GFCI and 240 VAC receptacles with covers, and its generator output follows Miller's Accu-Rated standard. The unit measures 24.75 in. high, 20.625 in. wide and 31.25 in. long, weighs 296 lbs and takes up little truck space; a lift eye and running gear or a cart are optional, and the running gear makes it one-person portable.
Highlights
Stick and DC TIG welding; 185 A at 25 V with a 20% duty cycle
150 A at 25 V at a 100% duty cycle; amperage range 60-195 A
Generator: 6,200 W continuous, 6,500 W peak, single-phase
13.4 hp Kohler gasoline engine with electric start, auto-idle and hour meter
120 VAC GFCI and 240 VAC receptacles, with receptacle covers
296 lbs; lift eye and running gear are optional
Specifications
Brand | Miller |
Manufacturer part number | 907664 |
Processes | Stick (SMAW), TIG DC (GTAW-DC) |
Rated output | 185 A at 25 V, 20% duty cycle; 150 A at 25 V, 100% duty cycle |
Amperage range | 60-195 A |
Weld output | CC, DC |
Generator power | 6,200 W continuous; 6,500 W peak (single-phase) |
Engine | Kohler, 13.4 hp, gasoline |
Engine speed | 2500 RPM idle; 3600 RPM weld |
Fuel capacity | 6.25 gallons |
Receptacles | 120 VAC GFCI; 240 VAC |
Weldable metals | Stainless steel, steel |
Dimensions (H x W x L) | 24.75 x 20.625 x 31.25 in. |
Weight | 296 lbs |
Portability | Lift eye and running gear/cart (both optional) |
Good to know
Engine-driven equipment gives off carbon monoxide: run it outdoors only, away from doors, windows and vents.

