1977 Yamaha CHAPPY Service and Repair Manual

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Yamaha covered the 1977 and 1978 Chappy in a single service manual, part number LIT-11616-07-14. The 1977 machine carries the code LB80IIAD.

Within it you get the factory procedures: engine teardown and assembly with the inspection limits that tell you what is still serviceable, carburettor and ignition specifications, chassis and brake work, torque values, wiring diagrams and troubleshooting. It is written for a dealer technician and states figures rather than approximations.

Chassis work is treated the same way. Wheel and brake service, frame and suspension items, cable routing and the fastener torques that go with them are all set out, so a full strip and rebuild can be done from this one volume.

Confirm LB80IIAD on your own Chappy before ordering, since the code changed from year to year and the manual is written to the codes it names.

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