{"title":"Unknown Inboard Engines","description":"\u003cp\u003eUnknown Inboard Engines workshop and repair manuals in downloadable PDF format, with maintenance schedules, troubleshooting charts, torque values and wiring diagrams.\u003c\/p\u003e","products":[{"product_id":"unknown-3ym30-3ym20-2ym15-engine-repair-service-manual","title":"Engine 3Ym30 3Ym20 2Ym15 Repair Service Manual","description":null,"brand":"Unknown","offers":[{"title":"Default Title","offer_id":44025438208180,"sku":"66584","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/4746\/1044\/files\/66584-engine-3ym30-3ym20-2ym15-repair-service-manual-pdf-download.jpg?v=1756597966"},{"product_id":"unknown-2qm20-h-3qm30-h-engine-service-repair-manual","title":"Engine 2QM20(H) 3QM30(H) Service Repair Manual","description":"This service repair manual covers the Yanmar 2QM20(H) and 3QM30(H) marine diesel engines. These engines are designed for marine propulsion, featuring a water-cooled, direct injection internal combustion system. The 2QM20(H) is a 2-cylinder engine with 0.855 L displacement, producing 20 HP at 2800 RPM, while the 3QM30(H) is a 3-cylinder engine with 1.283 L displacement, producing 30 HP at 2800 RPM. These engines are engineered for reliability and performance in marine applications.\n\nThis manual provides comprehensive guidance for the maintenance and repair of your Yanmar marine diesel engine. It includes detailed procedures for servicing, recommended oil types such as SAE 10W-30 API CD, and oil capacities for both models. Owners, mechanics, and technicians will find essential information on troubleshooting, technical specifications, and safety guidelines to ensure optimal engine performance and longevity. Refer to this manual for recommended service intervals and other critical operational details.","brand":"Unknown","offers":[{"title":"Default Title","offer_id":44110004224180,"sku":"154646","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/4746\/1044\/files\/cover-8016858677428.jpg?v=1786124844"},{"product_id":"unknown-ysm-engine-service-repair-manual","title":"Engine YSM Service Repair Manual","description":"The YANMAR YSM is a marine diesel engine designed for reliable marine propulsion. Manufactured in Japan, this naturally aspirated, indirectly cooled diesel engine utilizes a compression ignition system and injection fuel delivery. Its robust construction and efficient operation make it a dependable choice for maritime applications. The YANMAR YSM series embodies the company's commitment to engineering excellence and product durability, ensuring consistent performance in demanding marine environments.\n\nThis comprehensive service repair manual in English provides essential information for the maintenance and repair of your YANMAR YSM marine diesel engine. It covers critical aspects including routine maintenance procedures, technical specifications, and troubleshooting guidance. By following the detailed instructions and adhering to the recommended service intervals, owners and technicians can effectively preserve the engine's optimal performance, extend its service life, and ensure safe operation.","brand":"Unknown","offers":[{"title":"Default Title","offer_id":44111916925108,"sku":"154652","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/4746\/1044\/files\/154652-engine-ysm-service-repair-manual-download-pdf.jpg?v=1766452220"},{"product_id":"unknown-4by-150-180-6by-220-260-engine-service-repair-manual","title":"Engine 4BY-150 180 6BY-220 260 Service Repair Manual","description":"This manual covers the Yanmar 4BY-150, 4BY-180, 6BY-220, and 6BY-260 marine engines. These internal combustion diesel engines are engineered for reliable marine propulsion, offering robust performance across various applications. Their design emphasizes durability and efficiency, making them a trusted choice for demanding maritime environments.\n\nThe purpose of this English-language service repair manual is to provide comprehensive guidance for the maintenance and repair of your Yanmar marine engine. It details essential procedures, technical specifications, and troubleshooting steps to ensure optimal performance and longevity. By following the instructions within this manual, owners and technicians can effectively maintain and service these engines.","brand":"Unknown","offers":[{"title":"Default Title","offer_id":44112415555764,"sku":"154647","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/4746\/1044\/files\/154647-engine-4by-150-180-6by-220-260-service-repair-manual-pdf-download.jpg?v=1766462824"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/4746\/1044\/collections\/em_Unknown_Inboard_Engines.800x800.jpg?v=1788521347","url":"https:\/\/emanual.com\/collections\/unknown-inboard-engines.oembed","provider":"eManual Vehicle Repair Manual Store","version":"1.0","type":"link"}