287649 - Miller E-Choke Stepper Motor Replacement

Genuine Miller 287649 Stepper Motor for E-Choke Engines

The Miller 287649 is a specialized Stepper Motor designed specifically for Miller engine-driven welders equipped with Electronic Choke (E-Choke) technology. As a critical component of the engine's fuel management system, this motor is responsible for automatically actuating the choke plate based on engine temperature and startup conditions. When functioning correctly, it ensures your welder starts easily in cold weather and transitions smoothly to a stable idle as the engine warms up.

Over time, stepper motors can fail due to constant thermal cycling, vibration, or debris accumulation, leading to symptoms such as hard starting, rough idling, or the engine stalling immediately after starting. Replacing a faulty unit with this genuine Miller OEM part guarantees that the electrical resistance and mechanical throw match the engine control unit's specifications perfectly. This eliminates the guesswork often associated with universal engine parts.

This component is commonly found on Miller Bobcat and Trailblazer series welders powered by Kohler engines featuring the E-Choke system. Installation typically involves accessing the carburetor assembly, removing the old motor, and connecting the new unit to the existing wiring harness. By choosing the OEM Miller 287649, you ensure the longevity and reliability of your industrial equipment, minimizing downtime on the job site.

Key Benefits

• Reliable Starting: Restores the automatic fuel enrichment required for cold starts.


• OEM Fit: Connectors and mounting points align perfectly with factory specifications.


• Engine Protection: Prevents engine flooding or lean running conditions during warm-up.