Technical Here are some documents and images to provide you with more technical information. Ossa Service Bulletins Clearance Chart Transmission Gear Information Ignition Timing Chart Ignition Timing Settings Ignition Motoplat Facts Trasmission / Fork Oil Capacities Ossa Bolt Size OSSA Port maps/ Schematics Spark Plugs Ossa 5-Speed Manual Ossa 4-Speed Manual Side Cover Screw Diagrams OSSA-Yankee Wiring Diagrams Parts Diagram by Model