This comprehensive service and repair manual covers the 1997-2001 Isuzu NPR, NPR HD, W4, W3500, W4000, and W4500 models equipped with the V8 EFI gasoline engine. It is designed for both amateur and professional mechanics, providing detailed instructions and clear diagrams to guide you through every repair procedure. The manual is organized into four volumes: * **Volume 1:** The 1997 NPR/W4/4000 (V8/EFI-Gasoline Engine) Service Manual provides a comprehensive guide to servicing and repairing these models. * **Volume 2:** The 1998 NPR/NPR HD/W-Series (V8/EFI-Gasoline Engine) Service Manual Supplement includes additional information for 1998 models, including driveability and emissions troubleshooting. * **Volume 3:** The 1999 NPR/NPR HD/W3500/W4500 (V8/EFI-Gasoline Engine) Service Manual Supplement offers specific repair information for 1999 models. * **Volume 4:** The 2001 NPR/NPR HD/W3500/W4500 (V8/EFI-Gasoline Engine) Service Manual Supplement provides the latest updates and repair information for 2001 models. Use this manual regularly to perform routine maintenance and preventative measures to avoid premature failures and costly repairs. It is an invaluable resource that will save you time and money while ensuring your Isuzu truck runs smoothly and reliably.

The 1997-2001 Isuzu NPR/NPR HD/W4/W3500/W4000/W4500 series represents a range of medium-duty trucks designed for versatility and rugged performance. These trucks were popular choices for various applications, including delivery, construction, and utility, thanks to their robust build and reliable powertrain options. The NPR and NPR HD models, while sharing a common platform, differed in their payload capacity and intended applications, with the HD version catering to heavier loads. The W series, encompassing the W3500, W4000, and W4500, further expanded the range with increased gross vehicle weight ratings (GVWRs), enabling them to handle even more demanding tasks. Underpinning these trucks was a robust frame and a variety of engine options, including the fuel-efficient and powerful V8 gasoline engine. Equipped with the V8 gasoline engine, these Isuzu trucks offered a balance of power and efficiency, proving suitable for various urban and suburban driving scenarios. The EFI (Electronic Fuel Injection) system ensured precise fuel delivery for optimal performance and reduced emissions. The robust construction, featuring a durable frame and suspension system, allowed these trucks to handle heavy loads and challenging terrains. Their maneuverability was further enhanced by power steering and a well-designed braking system. The 1997-2001 Isuzu NPR/NPR HD/W4/W3500/W4000/W4500 series with V8 gasoline engines provided operators with a reliable and versatile workhorse, offering a blend of power, durability, and fuel efficiency. They remain popular choices for businesses seeking dependable medium-duty trucks for a variety of applications.