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Used Lincoln Bulldog 5500 — Factory Demo Engine Driven Welder Kohler - U2708-2

SKU: U2708-2

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$2,799.00 $4,260.00
Full New Factory Warranty Same warranty as a brand-new unit — backed by Lincoln Electric.

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Lincoln Bulldog 5500 - U2708-2 is a professional-grade factory demo welder/generator delivering exceptional portability and performance for DIY enthusiasts and contractors. This rugged unit combines 140 amps of AC stick welding capability with 5,500 watts surge power in a compact, lightweight design. Featuring premium all-copper windings, corrosion-resistant finish, and the reliable Kohler CH395 engine, this versatile machine offers outstanding value for maintenance, repair, and fabrication applications where mobility and durability are essential.

Overview
Downloads & Documentation

It's great for hobbyists and anyone who needs portable AC stick welding and AC generator power! Dependability and long life aided by all-copper windings in rotor and stator with high quality insulation. Red and black powder paint finish offers increased durability with added protection from rust and corrosion. Also ultraviolet resistant to better retain color and gloss. Manufactured under a quality system certified to ISO 9001 requirements and meets U.S. EPA EVAP standards for reduced emissions of gasoline vapor.

The Bulldog 5500 is designed with portability and durability as core features, incorporating innovative Low-Lift Grab Bars (Patent Pending) that make transportation easier, along with a rugged 1-1/4 in. (32 mm) diameter tube frame that provides excellent protection for the engine and components. This versatile machine delivers reliable AC welding performance with the capability to handle up to 1/8 in. (3.2 mm) stick electrodes, making it ideal for basic repair and fabrication tasks. The all-copper windings in both the rotor and stator, protected by high-quality insulation, ensure dependable operation and extended service life in various working environments.

As a dual-purpose unit, the Bulldog 5500 offers impressive generator capabilities with 5,500 watts of surge power and 4,000 watts of continuous AC generator power, providing sufficient output to run power tools, lights, and other electrical equipment on remote job sites or during emergency situations. The quality construction is evident in details like the durable red and black powder paint finish that provides enhanced protection against rust and corrosion while maintaining its appearance through resistance to ultraviolet degradation. Manufactured to meet ISO 9001 quality standards and U.S. EPA EVAP requirements for reduced gasoline vapor emissions, the Bulldog 5500 represents an excellent value proposition for hobbyists, maintenance personnel, farmers, and others requiring a reliable, portable source of both welding capability and generator power.

Key Features
    • Low-Lift Grab Bars (Patent Pending)
    • 1-1/4 in. (32 mm) Diameter Rugged Tube Frame
    • AC Welding with up to 1/8 in. (3.2 mm) Stick Electrode
    • 5,500 Watts Surge (4,000 Watts Continuous) AC Generator Power
    Specifications
    Product Weights & Dimensions
    Dimensions (H x W x D) 25.6 in x 21.8 in x 31.5 in (651 mm x 553 mm x 800 mm)
    Net Weight 198 lbs (89.813 kg)

    General Specification
    Machines Processes Stick (SMAW)

    Machine Technologies & Connections
    Output Range by Mode CC-Stick: 70 – 140 Amps

    Engine Driven Welders
    Single Phase Auxiliary Output 4,000 Watts Continuous, 120/240V
    Auxiliary Output Frequency 60 Hz
    Receptacle Types NEMA 5-20R
    Engine Brand & Model Kohler CH395
    Engine Description 1 Cylinder Air Cooled Gasoline Engine
    Engine Horsepower 8.9 HP
    High Idle Operating Speed @ Rated Output 3600
    Fuel Tank Size (US gal.) 1.9
    Fuel Tank Size (L) 7.2
    Oil Capacity (qts.) 1.2
    Oil Capacity (L) 1.1

    Application
    Typical Application General Fabrication
    Maintenance & Repair
    Repair Welding

    Warranty
    Warranty 3 Years Parts and Labor - Engine warranted separately by engine manufacturer
    Frequently Asked Questions
    What welding processes does the Bulldog 5500 support?

    The Bulldog 5500 supports Stick (SMAW) and TIG (GTAW) welding as standard processes. Many engine-driven models in this family also support MIG (GMAW) and flux-core (FCAW) welding when paired with an optional wire feeder. Check the spec sheet for the exact output range and recommended wire feeder compatibility.

    Does the Bulldog 5500 have a generator output for powering tools?

    Yes. Lincoln Electric engine-driven welders in this class include AC generator power — typically 120V and 240V auxiliary power outlets — making them ideal for jobsite use where power tools, lights, or other equipment need to run alongside welding operations. Refer to the spec sheet for exact generator wattage.

    What engine powers the Bulldog 5500?

    Lincoln engine drives in this class are available with Kohler, Kubota, or Perkins diesel/gasoline engines depending on the specific model variant. The engine brand and displacement is listed on the product label and in the owner's manual. Contact WeldingMart if you need to confirm the exact engine for a specific unit.

    What is the duty cycle rating?

    Duty cycle varies by amperage setting. At maximum rated output the duty cycle is typically 100% — engine drives are designed for continuous, all-day operation in demanding field environments. Refer to the spec sheet for the duty cycle curve at specific amperage levels.

    Is this a factory demo or refurbished unit?

    Yes — this is a factory demo or low-hour unit directly from Lincoln Electric. Units may show light cosmetic marks from display use but are mechanically sound. Each unit includes any applicable remaining Lincoln Electric warranty. Contact WeldingMart for warranty status on the specific unit number.

    What does this unit come with?

    Factory demo engine drives typically include the base machine and standard accessories as specified by Lincoln Electric. Consumables (electrodes, gas cylinders) are not included. See the product listing details or contact WeldingMart to confirm what is included with your specific unit.

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