This comprehensive manual is your guide to servicing and repairing your 1946 Harley Davidson Knucklehead motorcycle. Inside, you'll find detailed instructions covering every aspect of your motorcycle, from basic maintenance to complex engine work. Learn how to perform general maintenance tasks, troubleshoot common problems, and repair a variety of systems, including:

* **Engine Service:** Dive deep into the heart of your Knucklehead with detailed instructions on engine disassembly, reassembly, and repair. Learn how to service and adjust valves, repair the timing system, and rebuild the engine.
* **Transmission Service:** Understand the workings of your Knucklehead's transmission and learn how to service and repair it. This includes instructions on clutch adjustment, gear shifting, and transmission removal and installation.
* **Brake System:** Ensure your Knucklehead stops safely and reliably with detailed instructions on inspecting, adjusting, and repairing the brake system. This includes information on brake shoes, drums, cables, and hydraulics.
* **Electrical System:** Master the Knucklehead's electrical system with detailed explanations of wiring diagrams, troubleshooting guides, and repair procedures. Learn how to diagnose and repair electrical problems with the starter, ignition, lighting, and other electrical components.
* **Suspension:** Understand the mechanics of the Knucklehead's suspension and learn how to service and repair it. This includes instructions on inspecting, adjusting, and replacing fork components, shocks, and other suspension parts.
* **Cooling System:** Ensure your Knucklehead stays cool and runs optimally with detailed instructions on servicing and repairing the cooling system. This includes information on inspecting, cleaning, and replacing hoses, radiators, and other cooling system components.
* **Fuel System:** Learn how to service and repair the Knucklehead's fuel system. This includes instructions on inspecting, cleaning, and adjusting carburetors, fuel lines, tanks, and pumps.
* **Steering:** Maintain precise control with detailed instructions on inspecting, adjusting, and repairing the steering system. This includes information on steering head bearings, handlebars, and other steering components.
* **Chassis and Body:** Keep your Knucklehead's frame and body in top condition with detailed instructions on servicing and repairing the chassis and body. This includes information on inspecting, adjusting, and repairing the frame, fenders, and other body components.
* **Axle:** Maintain your Knucklehead's wheels and axles safely with detailed instructions on inspecting, adjusting, and repairing the axle system. This includes information on bearings, seals, and other axle components.

This manual is your go-to resource for restoring and keeping your 1946 Harley Davidson Knucklehead running smoothly for years to come.

The Harley-Davidson Knucklehead, produced from 1936 to 1947, is a legendary motorcycle that revolutionized the American motorcycle industry. This iconic model, known for its distinctive engine design, marked a significant departure from its predecessors with its advanced features that propelled Harley-Davidson to the forefront of motorcycle technology. The "Knucklehead" moniker stems from the distinctive outward appearance of its rocker arms, which resemble knuckles. This innovative design, with its overhead valve configuration, provided a significant power boost over previous models. The Knucklehead boasted a robust, cast-iron engine that delivered a smooth and powerful performance, establishing a new benchmark for Harley-Davidson motorcycles.

Beyond its engine innovations, the Knucklehead was a marvel of engineering, incorporating numerous improvements that enhanced both performance and rideability. Features like the telescopic front fork, hydraulic brakes, and the introduction of a "full-floating" rear axle significantly contributed to a smoother and more controlled ride. The Knucklehead's influence extended far beyond its immediate success, laying the foundation for the enduring legacy of Harley-Davidson motorcycles. It cemented the brand's reputation for innovation and quality, establishing a loyal following among riders who appreciated the motorcycle's performance, reliability, and timeless appeal. The Knucklehead's iconic design and engineering have inspired countless enthusiasts and collectors, ensuring that this legendary motorcycle will continue to be celebrated for generations to come.