291959 - Miller Replacement Kohler ECH730 EFI Engine with Electronic Governor

Genuine Miller 291959 Replacement Engine: Kohler ECH730 EFI

Restore the heartbeat of your industrial welding equipment with the Miller 291959 Replacement Engine. This unit is a complete Kohler Command PRO ECH730-3096 assembly, specifically configured for Miller Electric engine-driven welders. When your machine's power source is compromised, downtime can be costly. This OEM replacement ensures that your welder returns to factory specifications, delivering the reliability and power you expect from Miller equipment.

The standout feature of this engine is its Electronic Fuel Injection (EFI) system. Unlike traditional carbureted engines, the EFI system optimizes the fuel-to-air ratio in real-time, adapting to load changes and environmental conditions instantly. This results in significantly improved fuel economy—often saving users up to 25% in fuel costs over time. Furthermore, EFI eliminates common carburetor issues such as gumming from stale fuel and difficulty starting in cold weather. Your welder will start reliably, every time, regardless of the temperature.

Equipped with an Electronic Governor (E-Gov), this engine is designed for precision. In welding and generator applications, maintaining a constant RPM is critical for arc stability and auxiliary power frequency. The electronic governor reacts instantaneously to heavy weld loads or power tool usage, preventing engine droop and ensuring a smooth, consistent arc. This direct-replacement unit is built to withstand the harsh environments of job sites, featuring a heavy-duty air filtration system and pressurized lubrication to extend engine life.

Key Benefits for Industrial Users

• Fuel Efficiency: Closed-loop EFI technology reduces fuel consumption and runtime costs.


• Reliability: No carburetor choke or jetting adjustments needed; reliable starting in all climates.


• Performance: Electronic governor ensures consistent power output for sensitive electronics and critical welds.


• Durability: Designed by Kohler for high-hour industrial applications with robust internal components.