The GM Carburetor Training Program Manual 9: Model H-HV is a technical guide developed by General Motors to provide detailed instruction on the Rochester Model H and HV carburetors, which were commonly used in Chevrolet Corvairs during the 1960s. This manual was part of GM's dealer training program, aimed at equipping service technicians with the knowledge necessary to service and troubleshoot these specific carburetor models.

Key Features:

• Carburetor Operation: The manual explains the fundamental principles of carburetion, detailing how the Model H and HV carburetors manage air-fuel mixtures under various engine operating conditions.

• Component Identification: It provides comprehensive diagrams and descriptions of the carburetor's components, facilitating accurate identification and understanding of each part's function.

• Adjustment Procedures: Step-by-step instructions are included for adjusting various settings, such as idle speed and mixture, to ensure optimal engine performance.

• Troubleshooting Guidelines: The manual outlines common issues that may arise with these carburetors and offers diagnostic procedures to identify and resolve problems effectively.

• Distributor Curve Graphs: An additional feature of this manual is the inclusion of distributor curve graphs, which illustrate the relationship between engine speed and ignition timing, aiding in precise tuning.

This manual serves as a valuable resource for automotive technicians and enthusiasts seeking to understand and maintain the Rochester Model H and HV carburetors. While originally intended for GM service personnel, its detailed content remains relevant for those restoring or servicing vintage Chevrolet Corvairs.

For those interested in obtaining a copy, the manual is available through various online marketplaces, such as eBay.