Lincoln Electric Bulldog 5500 K2708-2 is a portable gasoline engine-driven AC stick welder and AC generator for farm repairs, property maintenance and workshop tasks away from mains power. The Kohler-engine configuration provides separate welding and auxiliary-power ratings.
Key Features and Benefits
- 70–140 A AC stick output identifies the documented welding range.
- Auxiliary output is 4,000 W continuous with 5,500 W surge capacity.
- A rugged tube frame and grab bars support handling the machine.
- The manufacturer identifies use with stick electrodes up to 1/8 in.
- The Kohler CH395 gasoline engine provides the documented engine configuration.
Technical Specifications
| Specification | Details |
|---|---|
| Model / manufacturer part number | K2708-2 |
| Welding process | AC stick |
| Welding output range | 70–140 A |
| Rated welding output | 125 A AC / 20 V at 30%; 100 A AC / 25 V at 60% duty cycle, 40°C |
| Engine | Kohler CH395, single-cylinder air-cooled gasoline |
| Auxiliary output | 4,000 W continuous / 5,500 W surge, 120/240 V AC |
| Auxiliary frequency | 60 Hz |
| Fuel tank | 1.9 US gal (7.2 L) |
| Net weight | 198 lb |
Applications and Compatibility
For repair and maintenance requiring AC stick welding and portable auxiliary power. Select AC-compatible electrodes for the material and procedure. This model is not described as a DC TIG or MIG welding package; peak generator wattage is not a continuous rating.
What Is Included
- Bulldog 5500 engine-driven welder/generator
Setup and Documentation
Read the exact machine-code operator manual and Kohler engine instructions. Follow requirements for grounding, exhaust ventilation, fueling and maintenance. Select welding leads and connected generator loads for the documented ratings. The relevant manufacturer document is available in Downloads & Documents.
Frequently Asked Questions
Is welding output AC or DC?
The Bulldog 5500 is documented for AC stick welding.
Is 5,500 W available continuously?
No. Generator output is 4,000 W continuous and 5,500 W surge.
Are welding cables included?
The manufacturer package lists the welder/generator. Do not assume an accessory cable kit is included.
Is maximum welding output a continuous rating?
No. The documented ratings are 125 A AC at 20 V and 30% duty cycle, or 100 A AC at 25 V and 60% duty cycle, at 40°C.
Can I use the full auxiliary-power rating while welding?
Available auxiliary power is reduced during welding. Do not add a welding load to the full standalone generator rating; check the exact machine-code instructions and the connected equipment requirements before choosing a setup.
Compare welding output and auxiliary power separately
Start with the welding process and job requirements, then check the machine rating and the equipment you intend to power. A peak-watt figure alone does not establish suitability.