The New Holland Rustler 120 and 125 Service Repair Workshop Manual is a comprehensive guide designed to assist both professional mechanics and DIY enthusiasts in maintaining and repairing their New Holland Rustler tractors. This manual provides detailed instructions for a wide range of procedures, from basic maintenance to complex engine repairs, ensuring you have the knowledge and confidence to tackle any task. The manual begins with essential safety procedures, providing a foundation for working on your Rustler safely. It then delves into technical specifications, model identification, storage procedures, and troubleshooting tips, offering you a thorough understanding of your tractor's operation. Within its pages, you'll find step-by-step instructions for various procedures, covering most aspects of the Rustler's design. These include detailed guides for working on the body and trim, removing, repairing, and installing components like the front fascia, hood, ROPS, seats, and cargo bed. The manual also covers the accelerator and brake pedal assemblies, providing instructions on removal, installation, and adjustment. Detailed information is provided on the hydraulic and park brake systems, including servicing and repair of brake pads, calipers, discs, hydraulic lines, and the parking brake system. The steering and front suspension are covered extensively, guiding you through working on the steering wheel, column, rack and pinion, and front suspension components. The manual also includes comprehensive guidance on wheels and tires, covering removal, installation, and maintenance. The rear suspension is thoroughly addressed, with instructions for servicing and repairing rear shock absorbers and swing arms. For regular maintenance, the manual provides detailed service schedules for tasks like oil changes, filter replacements, and fluid checks. The electrical system for both gasoline and diesel models is thoroughly explained, covering troubleshooting, test procedures, wiring diagrams, and component instructions. The engine, muffler, fuel system, and clutches for both gasoline and diesel models are covered in depth, detailing removal, installation, and troubleshooting procedures. The drivetrain components, including driveshafts, axles, transmission, and differentials, are also comprehensively covered, with instructions for removal, installation, and servicing. The manual further includes information on the cooling system for diesel models, covering servicing of the radiator, coolant reservoir, and fan. The diesel transmission, front differential, and rear differential are all covered with detailed instructions on removal, disassembly, assembly, and reinstallation. Clear and concise language is used throughout the manual, alongside detailed illustrations and helpful diagrams to guide you through each step. Comprehensive troubleshooting guides are provided to help diagnose and resolve common problems. Detailed wiring diagrams for both gasoline and diesel models are included, along with accurate torque specifications for all fasteners. Essential technical information is provided for professional mechanics, ensuring this manual is a valuable resource for anyone working on a New Holland Rustler 120 or 125.

The New Holland Rustler 120 and 125 are compact utility tractors built for agricultural, landscaping, and grounds maintenance applications. These tractors, part of the Rustler series, are known for their versatility and maneuverability, making them ideal for a wide range of tasks. They feature a robust design, powerful engines, and a variety of attachments for increased functionality. The Rustler 120 and 125 models share a common base, with differences primarily in engine power and hydraulic capacity. The 120 is equipped with a 19.5 hp (14.5 kW) Yanmar diesel engine, while the 125 boasts a slightly more powerful 24.5 hp (18.3 kW) Yanmar engine. This difference in power output allows the 125 to handle heavier loads and more demanding tasks. Furthermore, both Rustler models feature a hydrostatic transmission, providing smooth and responsive operation. The hydrostatic transmission allows for easy maneuvering in tight spaces and eliminates the need for shifting gears. They also come equipped with a variety of features that enhance operator comfort and control, such as an adjustable steering wheel, ergonomically designed controls, and a comfortable operator platform. The Rustler 120 and 125 can be fitted with a wide range of attachments, including front-end loaders, backhoes, mowers, and tillers, further expanding their versatility. Their compact size and maneuverability make them suitable for working in confined areas, while their durable construction and powerful engines ensure reliable performance in demanding conditions. These tractors are designed to offer a balance of performance, versatility, and operator comfort, making them a popular choice for a variety of applications.