This manual covers the YANMAR 6SY-STP2 Marine Diesel Engine. Engineered for reliability and performance, this engine is designed for marine applications where robust operation is paramount. Its advanced STP2 engine type ensures efficient power delivery for various maritime tasks. This comprehensive guide is intended to support the upkeep and optimal functioning of your YANMAR marine diesel engine. This Service Repair Workshop Manual provides extensive information for repair, servicing, and troubleshooting. It features step-by-step instructions, detailed photos, and exploded diagrams to facilitate understanding and execution of maintenance procedures. With hundreds of pages of very detailed content, this manual is an essential resource for owners, mechanics, and technicians seeking to maintain and repair the YANMAR 6SY-STP2 Marine Diesel Engine effectively.