1969-1982 Honda CT70, CT70H, CT70K1, CT70HK1 Parts Catalog (P/N HC 37507, 2nd)

• Essential bench reference for workshops and builders servicing the 1969–1982 Honda CT70, CT70H, CT70K1, and CT70HK1 mini-bikes
• Official American Honda OEM publication (P/N HC 37507, 2nd edition, December 1973)
• Details the complete parts breakdown for the 72 cc engine group and frame assemblies across 100 pages
• Serves as the authoritative source for early production components through the CT70HK1 era

Component and Parts Documentation

Tracking down the exact hardware for vintage mini-bikes can quickly halt a rebuild. This catalog maps out every individual assembly for the CT70 series to keep your project moving. It splits components logically into engine and frame groups. You get complete exploded views for major sub-systems. These include the cylinder head, crankshaft, piston, transmission, clutch, carburetor, and steering handle. Expert diagrams sit right next to the parts lists for fast visual matching on the workbench. Each table outlines part numbers, Honda code H/C markers, and application columns denoting the specific usage for the 70, 70H, 70K1, and 70HK1 variants.

Technical Specification Preview

Finding the right fastener matters. The manual includes hard data on JIS and ISO threaded parts, breaking down bolt dimensions, nut sizes, and pitch modifications. It also lists exact serial number ranges to help you identify and order the correct chassis or engine components for a specific production year. You will also find baseline figures like engine oil capacity and standard tire pressures. Please note that while this reference provides exact specifications, you should always consult a certified mechanic before performing structural or engine service on these models.