This comprehensive Yamaha CT1 engine crank and piston parts manual provides detailed part numbers and specifications for all crankshaft and piston components. The manual includes complete listings for crank assemblies, connecting rods, crank pins, pistons in various oversizes, bearings, washers, and drive gear components with their corresponding Yamaha part numbers.
The parts catalog features standard pistons as well as oversize variants including 0.5mm and 1.0mm options, complete with proper part number references such as 251-11631-00-96 for standard pistons and various oversize alternatives. All crank components are thoroughly documented including crank 1 and crank 2 assemblies, connecting rods, cylinder bearings, and associated hardware with precise part numbering.
This manual serves as an essential reference for mechanics, restoration enthusiasts, and parts suppliers working with Yamaha CT1 engines. The detailed parts breakdown includes primary drive gear assemblies, conical spring washers, nuts, woodruff keys, and collar components, making it invaluable for ordering correct replacement parts and understanding the complete engine assembly structure.









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