230015 - Miller 230015 Kohler Engine Tune-Up Kit for Bobcat & Trailblazer

Technical Overview of the Miller 230015 Tune-Up Kit

The Miller 230015 Tune-Up and Filter Kit is a consolidated maintenance package engineered specifically for Miller and Hobart engine-driven welders powered by Kohler Command series gasoline engines. This kit addresses the critical service requirements for the Kohler CH23, CH680, and CH730 twin-cylinder air-cooled engines. It is explicitly designed for carbureted models and is not compatible with Electronic Fuel Injection (EFI) variants. Regular adherence to the 100-hour service interval using this kit ensures compliance with manufacturer warranty standards and optimal engine thermodynamics.

Component Specifications

The kit aggregates five essential consumable components required for a complete tune-up. The filtration system is addressed via the 230016 Air Filter and its accompanying 230017 Pre-Cleaner, which work in tandem to prevent particulate ingress in harsh industrial environments. The lubrication system is serviced by the 066698 Oil Filter, designed for the pressure and flow characteristics of the Kohler Command series (CH12.5/18/20/23/730). Fuel system integrity is maintained with the 215985 (or 215984) Fuel Filter, which includes necessary clamping mechanisms to ensure a leak-free seal. Finally, ignition efficiency is restored using two 067007 Spark Plugs, calibrated for the correct heat range and gap settings for these specific power plants.

Compatibility and Fitment

This SKU is the designated service kit for a broad array of Miller industrial equipment. It fits the Bobcat™ 225 and 250 (equipped with Command CH23/CH680), the Bobcat™ 260 (Command CH730), and the Bobcat™ 3 Phase. It is also the correct specification for the Legend® 301 G and 302, as well as the Trailblazer® series, including the 275 DC, 302, and 325 models utilizing the aforementioned Kohler power units. Technicians should verify the engine model plate prior to installation to confirm the presence of a carbureted Kohler Command engine, as distinct kits exist for Onan, Subaru, or EFI-equipped units.

Maintenance Protocol

Utilization of the 230015 kit is recommended at 100-hour intervals under normal operating conditions. In environments with high dust or particulate saturation, more frequent inspection of the air filtration components may be required. Replacing all included components simultaneously ensures a baseline of performance is re-established, mitigating issues related to fuel starvation, oil degradation, or ignition misfires that can affect welding arc stability and auxiliary power generation.