This manual covers the Isuzu 4JG2 engine, a robust and reliable direct injection, 4-cylinder diesel engine widely utilized in HDF20-30 2 Series fork lift trucks. Produced from the early 1990s through the early 2000s, the 4JG2 is known for its durability and fuel efficiency, making it a cornerstone of Isuzu's reputation in industrial applications. This engine, with a displacement of 2.179 liters, is designed for demanding operational environments, offering dependable performance characteristic of Isuzu's engineering quality.

This comprehensive Service and Repair Manual provides essential technical information for technicians, mechanics, and owners of Isuzu 4JG2 powered HDF20-30 2 Series fork lifts. With 215 pages of detailed content, it covers all critical aspects of engine service, maintenance, and repair. The manual includes in-depth procedures for engine mechanical systems, fuel, cooling, lubrication, air intake, exhaust, and electrical systems, alongside scheduled maintenance, troubleshooting guides, repair instructions, and complete engine overhaul procedures. Its purpose is to ensure optimal performance, minimize downtime, and facilitate efficient maintenance and repair of the Isuzu 4JG2 engine.