This comprehensive OSSA 175 250 STILETTO 5 SPEED Motorcycle Service Repair Manual provides an in-depth guide to maintaining and repairing your motorcycle. It is a complete resource, covering a wide range of topics designed to assist both novice and experienced mechanics. You will find detailed instructions, exploded diagrams, and specifications to help you tackle any repair job with confidence. The manual covers everything from basic maintenance procedures, such as oil changes and tire rotations, to advanced engine overhauls. It also addresses critical aspects of your motorcycle, including: * **General Information:** This section dives into the basics of your OSSA motorcycle, setting the stage for understanding its design and operation. * **Specifications:** Here you will find all the important technical data you need, including dimensions, tolerances, and fluid capacities. * **Maintenance:** Learn about routine maintenance schedules, ensuring your motorcycle runs smoothly and reliably. * **Gearbox & Clutch:** Understand the intricacies of the transmission system, including troubleshooting and repair. * **Engine Removal and Installation:** Detailed instructions for removing and reinstalling your engine, a critical task for major repairs. * **Engine Fuel System:** Explore the workings of the fuel system, from the carburetor to the fuel lines, addressing potential issues and solutions. * **Engine Lubrication and Cooling:** Learn about the lubrication system, including oil types, filters, and cooling system maintenance. * **Engine Combustion System:** Delve into the heart of your engine, understanding the combustion process, ignition timing, and troubleshooting issues. * **Lubrication System:** This section focuses on maintaining the lubrication system, ensuring your engine runs smoothly and efficiently. * **Cylinder Head/Valves:** This section provides a detailed guide to inspecting, adjusting, and repairing the cylinder head and valve system. * **Alternator/Starter Clutch:** Learn about the electrical system, including the alternator, starter motor, and clutch. * **Crankcase/Piston/Cylinder:** Gain a comprehensive understanding of the crankshaft, piston, and cylinder assembly, including repair procedures. * **Crankshaft/Transmission/Balancer:** This section details the crankshaft, transmission, and balancer system, covering repair and maintenance. * **Transmission System:** This section focuses on the transmission system, including gear changes, clutch operation, and troubleshooting. * **Front Wheel and Steering System:** Explore the front wheel and steering system, from wheel bearings to steering head adjustments. * **Rear Wheel System:** Understand the rear wheel system, coverting maintenance, and addressing common issues. * **Fenders and Exhaust Pipe:** Learn about the fenders and exhaust system, including repair and replacement procedures. * **Periodic Checks & Adjustments:** This section outlines routine checks and adjustments for maintaining your motorcycle's performance. * **Chassis:** Understand the motorcycle's frame and chassis, covering repair and maintenance procedures. * **Cooling System:** Detailed instructions for maintaining and troubleshooting the cooling system. * **Fuel Injection System:** Learn about the fuel injection system, including troubleshooting and repair. * **Braking System:** This section provides a comprehensive guide to the braking system, encompassing maintenance, adjustment, and repair procedures. * **Suspension:** Explore the suspension system, including fork adjustments, shock absorbers, and maintenance procedures. * **Electrical System:** Understand the electrical system, including wiring diagrams, troubleshooting, and repair. * **Body & Fixtures:** This section covers the motorcycle's body panels, fixtures, and accessories, including repair and maintenance. * **Frame/Body Panels/Exhaust System:** This section details the frame, body panels, and exhaust system, covering repair and maintenance procedures. * **Wheels/Tires/Brakes:** Understand the wheels, tires, and brakes, covering maintenance and repair procedures. * **Battery/Charging System:** Learn about the battery and charging system, including maintenance, troubleshooting, and repair procedures. * **Ignition System:** Understand the ignition system, including troubleshooting and repair procedures. * **Electric Starter:** This section focuses on the electric starter system, including troubleshooting and repair procedures. * **Lights/Meters/Switches:** Explore the lighting, gauges, and switches, covering maintenance and repair procedures. * **Wiring Diagrams:** Detailed wiring diagrams for troubleshooting and repairs. * **Technical Information & Specifications:** Comprehensive technical information and specifications for your OSSA motorcycle. * **Troubleshooting:** Learn effective troubleshooting methods for identifying and resolving common motorcycle issues. This manual is a valuable resource for any owner of an OSSA 175 250 STILETTO 5 SPEED motorcycle. By utilizing this detailed information, you can confidently maintain, repair, and enhance your motorcycle's performance.

The OSSA 175 and 250 Stiletto motorcycles were iconic Spanish-made machines produced by the OSSA (Orbea, San Sebastián, y Anexos) company from 1967 to 1979. These lightweight and agile bikes were designed for off-road competition and quickly gained popularity in the world of motocross, enduro, and trials. The Stiletto's distinctive features included its sleek, minimalist design with a single-cylinder, two-stroke engine, a telescopic front fork, and a swingarm rear suspension. The 175 Stiletto, powered by a 175cc engine, was known for its nimble handling and quick acceleration, making it a favorite among novice and intermediate riders. The larger 250 Stiletto, with its 249cc engine, offered more power and torque, enabling experienced riders to tackle more challenging terrain. Both Stiletto models were celebrated for their reliability, durability, and performance. Their light weight and responsive handling allowed riders to maneuver through tight corners and over obstacles with ease. The simplicity of the two-stroke engine design meant that maintenance was relatively straightforward, and the bikes were popular for their user-friendliness. While production of the Stiletto ceased in 1979, these motorcycles continue to hold a special place in the hearts of many enthusiasts, and their reputation for performance and reliability has endured the test of time. The OSSA 175 and 250 Stiletto motorcycles remain highly sought after by collectors and vintage motorcycle enthusiasts, offering a glimpse into the exciting world of off-road racing and the golden age of Spanish motorcycle manufacturing.