This comprehensive KTM Engine Service Repair Manual covers a range of KTM motorcycle models, specifically the 250, 300, and 380 SX, MXC, and EXC models spanning the years 1999 to 2003. This official factory manual provides detailed instructions and diagrams to guide you through every aspect of maintenance and repair. Dive into intricate details of your motorcycle's engine, from the carburetor and intake to the heads, camshaft, valve train, block, pistons, rings, rods, crankshaft, oil pump, pan, ignition system, and more. The manual covers essential aspects like fastener specifications, gaskets, bearings, damper systems, machining requirements, balancing procedures, and a wealth of vital parts information. Go beyond basic engine maintenance and explore topics like transmission changes, fluid replacements, motor mounts, heat exchangers, exhaust systems, fuel pumps, clutches, and tire rotations. It also covers critical components like brakes, alignment procedures, timing gear adjustments, and the essential aspects of maintaining your motorcycle's cooling system. The manual delves into intricate details of your motorcycle's electrical system, offering wiring diagrams, sensor information, and troubleshooting guidance. Detailed breakdowns of essential components like the carburetor assembly, recoil starter, and various other essential parts are included. This manual is a valuable resource for anyone looking to perform maintenance, repairs, or even complete overhauls on their KTM motorcycle.

The KTM 250, 300, and 380 SX, MXC, and EXC models produced between 1999 and 2003 are legendary off-road motorcycles renowned for their performance and durability. These machines, powered by powerful two-stroke engines, cater to a wide range of riders and riding styles. The SX models were designed for pure motocross competition, boasting lightweight frames and aggressive suspension settings for high-speed agility and track-focused performance. The MXC models offered a blend of motocross and enduro capabilities, with slightly softer suspension for comfort on trails and a more durable set of components for handling rough terrain. Finally, the EXC models were optimized for enduro riding with a more comfortable riding position, larger fuel tanks, and sturdier components suited for long-distance adventure riding. These KTM models shared a common thread: exceptional engineering and performance. The two-stroke engines, with displacements ranging from 250cc to 380cc, were known for their explosive power delivery and lightning-fast throttle response. The chassis, crafted from durable aluminum, offered a balance of rigidity and flexibility, providing exceptional handling and feedback while remaining strong enough to withstand demanding off-road riding. These motorcycles featured advanced suspension systems, with WP components offering adjustability for both compression and rebound damping. This allowed riders to fine-tune the suspension settings to match their riding style and terrain. In addition to their impressive performance, these KTM models were also built to withstand the rigors of off-road riding, with durable components and high-quality craftsmanship. These bikes played a significant role in solidifying KTM's reputation as a leading manufacturer of off-road motorcycles.