This manual covers the Subaru EX35 and EX40 engines, designed as versatile internal combustion engines for a wide range of industrial, agricultural, construction, and generator applications. These gasoline-powered, 4-stroke Overhead Valve (OHV) engines offer reliable performance with displacements of 350 cc for the EX35 and 400 cc for the EX40. Engineered for durability and efficiency, they represent a robust solution for demanding operational requirements.

This Service/Technician Manual provides comprehensive guidance for the maintenance and repair of the Subaru EX35 and EX40 engines. It details essential procedures, technical specifications, and troubleshooting steps necessary for optimal engine performance and longevity. Owners, mechanics, and technicians will find the information on servicing guidelines, including recommended oil types such as SAE 10W-30 API SG or higher, invaluable for routine upkeep and complex repairs.