This manual covers the 1940-1947 Harley-Davidson Big Twin motorcycles, encompassing both the innovative Knucklehead and the enduring Flathead engine variants. These iconic machines represent a significant era in American motorcycle engineering, known for their robust V-twin powerplants and distinctive styling. The Knucklehead, introduced in 1936, featured an overhead valve design, while the Flathead offered a reliable side-valve configuration. Both engine types, available in displacements such as 61 and 74 cubic inches, were engineered for performance and durability, making them highly sought after by collectors and enthusiasts alike.
This comprehensive factory service and workshop manual provides detailed instructions for the maintenance, repair, and rebuilding of all major systems. Coverage includes in-depth procedures for the engine, transmission, chassis, and electrical systems, along with specific guidance on lubrication, ignition timing, and carburetor adjustments, particularly for Linkert carburetors. The manual is an essential resource for owners, restorers, and mechanics, offering factory-level technical detail, hundreds of illustrations, and troubleshooting advice to ensure these classic Harley-Davidson Big Twins remain in optimal condition.
This is the Highly Detailed factory service repair manual for the 1940-1947 Harley Davidson Big Twins Knucklehead / Flathead has detailed illustrations as well as step by step instructions,It is 100 percents complete and intact. they are specifically written for the do-it-yourself-er as well as the experienced mechanic 1940-1947 Harley Davidson Big Twins Knucklehead / Flathead Service Repair Workshop Manual provides step-by-step instructions based on the complete dis-assembly of the machine. It is this level of detail, along with hundreds of photos and illustrations, that guide the reader through each service and repair procedure. Complete download comes in pdf format which can work under all PC based windows operating system and Mac also, All pages are printable. Using this repair manual is an inexpensive way to keep your vehicle working properly.
This manual
This is the Highly Detailed factory service repair manual for the 1940-1947 Harley Davidson Big Twins Knucklehead / Flathead has detailed illustrations as well as step by step instructions,It is 100 percents complete and intact. they are specifically written for the do-it-yourself-er as well as the experienced mechanic 1940-1947 Harley Davidson Big Twins Knucklehead / Flathead Service Repair Workshop Manual provides step-by-step instructions based on the complete dis-assembly of the machine. It is this level of detail, along with hundreds of photos and illustrations, that guide the reader through each service and repair procedure. Complete download comes in pdf format which can work under all PC based windows operating system and Mac also, All pages are printable. Using this repair manual is an inexpensive way to keep your vehicle working properly.
This manual
