1970-1984 Honda C70 / CL70 / Cub / C70M Passport Service Manual

Technical Documentation for the Honda C50, C65, and C70 Series

• Covers 1970–1984 Honda C50, C65, S50, S65, and the C70 Passport series including sub-variants like the C50M and C65M
• Official Honda Motor Co., Ltd. service publication, supplementary edition for CL70, C70, and C70M models
• Contains 44 technical diagrams, 21 specialized service tool references, and 6 engine performance charts
• Delivered as a direct download the moment payment clears
• Stored against your account so you can retrieve it after a hard-drive loss
• Full-text search finds any part number in seconds
• Laid out for standard letter and A4 printing
• This 100-page OEM reference is the core resource for maintaining the OHC powertrain used across the classic Honda 50 and 65cc motorcycle lineups

Component and System Documentation

The Honda C50 and Honda C65 series service manual provides technical details on the four-stroke overhead camshaft engine design, power transmission assembly, and lubrication circuit. Chapters walk through the internal architecture of the cylinder head, valve operating mechanism, and the self-adjusting cam chain tensioner, alongside procedures for the right crankcase cover, clutch assembly, and breather components. Frame-specific documentation details handle construction, front fork assembly, front and rear cushion construction, and the specialized braking systems found on the S50 and S65 variants.

This Honda C70 and C50 series technical manual includes exhaustive specifications for the electrical system, ranging from flywheel A.C. generator outputs and ignition coil resistance to selenium rectifier maintenance and flasher relay circuitry. The carburetor section provides a detailed breakdown of the downdraft fuel system, including needle jet, main jet, and float chamber functions. Additional tables list precise tolerance charts for the piston rings, valve stems, and connecting rod end play. Standard compression pressure for the engine is specified at 12 kg/cm² (170 lb/in²). Intake and exhaust valve clearance is documented at 0.05 mm (0.002 in). The fuel tank capacity for the Honda C70 and Honda C50 series is approximately 0.8 liters for the reserve supply. This 100-page OEM manual is a technical reference for the 1970–1984 Honda C70, C50, C65, and S65 series, covering engine, chassis, and electrical specifications for the entire OHC lineup.