This is the final version of the Diagnostic System for Kohler (Version 2.11).
This version includes diagnostic functions for all Kohler EFI engines with a 4-pin diagnostic connector, including:

• CV & CH EFI Series Engines
• LH EFI Engines
• EC Series Engines

This is the DOWNLOAD ONLY version of the Diagnostic Software.  Upon completing payment, you will be emailed the 10-digit Serial Number (called the Product Key in the email). You will need this number to run the software.  You will also receive a separate email with a link to download the software.  The download link will expire after 1 week.