This comprehensive workshop service repair manual provides detailed instructions and diagrams for maintaining and repairing your Honda CB450 and CL450 motorcycles from 1968 to 1975. Engineered for both professional mechanics and home enthusiasts, this manual equips you with the knowledge to perform a wide range of repairs, from routine maintenance to complex overhauls. It covers every aspect of your motorcycle, including the engine, transmission, electrical systems, brakes, suspension, and more. Inside, you'll find detailed information on: * **Engine Disassembly and Assembly:** Step-by-step guidance on engine teardown, rebuild, and component inspection. * **Cylinder Head and Cylinder:** Detailed instructions for working with these critical components, including valve adjustments and cylinder honing. * **Crankshaft and Connecting Rod:** Thorough coverage of crankshaft removal, bearing inspection, and connecting rod replacement. * **Transmission:** Comprehensive information on gear shifting, clutch adjustments, and transmission overhaul procedures. * **Carburetion System:** In-depth analysis of carburetor operation, adjustment, and troubleshooting techniques. * **Air Construction System:** Understanding of the air intake system, including filter replacement and cleaning. * **Fuel System:** Information on fuel lines, tank, and pump maintenance for optimal fuel delivery. * **Frame and Handlebar:** Detailed procedures for frame alignment, steering head adjustments, and handlebar assembly. * **Fork and Cushion:** Step-by-step instructions for fork disassembly, rebuild, and suspension tuning. * **Steering System:** Detailed information on steering head bearings, steering stem, and handlebar components. * **Fuel Tank:** Instructions on fuel tank removal, cleaning, and repair procedures. * **Frame Body System:** Information on frame components, including the seat, air cleaner, and associated parts. * **Stand and Brake Shoe:** Guidance on stand removal, adjustment, and brake shoe replacement. * **Exhaust Pipe and Muffler:** Instructions for exhaust system removal, cleaning, and repair. * **Fender and Wheel:** Detailed guidance on fender installation, wheel removal, and bearing service. * **Electrical Equipment:** Comprehensive information on wiring diagrams, power supply system, ignition, battery, electric starter, power circuit, starting motor, and safety devices. * **Maintenance:** Essential maintenance steps and procedures for keeping your motorcycle in peak condition. * **Lubrication System:** Detailed instructions on oil changes, filter replacement, and lubrication procedures. With clear diagrams, comprehensive instructions, and a logical layout, this manual facilitates a deeper understanding of your Honda CB450 and CL450 motorcycle.

The Honda CB450 and CL450 motorcycles, produced from 1968 to 1975, were iconic models that helped establish Honda as a leading motorcycle manufacturer. These machines were powered by a 447cc parallel-twin engine, a departure from the single-cylinder designs dominant in the market at the time. The CB450, a street-oriented model, became known for its smooth power delivery, reliable handling, and comfortable riding position. The CL450, on the other hand, was a scrambler version with higher ground clearance, knobby tires, and a larger front fender, aimed at off-road riding and adventure. Despite their differences, both models shared the same robust engineering and durable construction that made Honda motorcycles renowned for their reliability. The CB450 and CL450 featured a five-speed gearbox, a telescopic front fork, and twin rear shocks, providing a comfortable and responsive ride both on and off the road. The engine, featuring Honda's signature overhead camshaft design, delivered impressive performance for its time, making it a favorite among riders looking for a versatile and capable motorcycle. Both models were highly successful, with the CB450 becoming a popular commuter and touring bike, while the CL450 gained a reputation for its off-road ability and adventurous spirit. Their legacy continues to this day, with enthusiasts appreciating these classic machines for their timeless design, robust construction, and enjoyable riding experience.