286582 - Miller Replacement Engine Kohler CH730-3320 for Bobcat/Trailblazer

Reliable Power for Industrial Welding Equipment

The Miller 286582 Replacement Engine is a genuine OEM component designed to restore the heart of your engine-driven welding generator. This unit features the robust Kohler Command PRO CH730-3320, a gasoline-powered engine celebrated for its durability and performance in demanding industrial environments. When your welder's power source reaches the end of its service life, replacing it with this exact-spec engine ensures that your equipment continues to operate at peak efficiency without the compatibility headaches associated with aftermarket modifications.

Engineered for Heavy-Duty Cycles

The Kohler CH730 is a V-Twin, air-cooled engine that delivers approximately 23.5 horsepower (depending on RPM and load conditions). It is engineered with overhead valve (OHV) technology which provides better fuel efficiency and cleaner emissions compared to older side-valve designs. The V-Twin configuration is particularly beneficial for welding applications as it offers smoother operation and reduced vibration, which translates to less wear on the generator components and a more stable arc for the operator. The engine block is constructed from aluminum for effective heat dissipation, while cast iron cylinder liners ensure long-term structural integrity even under continuous heavy loads.

Maintenance and Longevity

Industrial equipment requires components that minimize downtime. This Miller replacement engine incorporates hydraulic valve lifters, a standout feature that eliminates the need for routine valve lash adjustments. This saves time and maintenance costs over the life of the engine. Additionally, the full-pressure lubrication system ensures that critical engine components are constantly bathed in oil, even during startup or when operating at angles. A spin-on oil filter keeps the oil clean, further extending the engine's lifespan. For environments filled with metal dust and debris—common in welding shops and construction sites—the heavy-duty dual-element air filter provides superior protection against ingestion of harmful particulates.

Seamless Integration

Because this is a Miller-specified part (SKU 286582), it is configured to fit specific Miller welder/generators, such as select models of the Bobcat and Trailblazer series (verify specific serial number compatibility before purchase). It comes ready for installation, ensuring that mounting points, shaft dimensions, and electrical connections for the starter align correctly with your existing machine frame and control systems.