This comprehensive service and repair manual provides detailed instructions for maintaining and repairing your International Harvester (IH) tractor models 86, 108, 109, 128, 129, 149, and 169, as well as their corresponding chassis variants (800, 1000, 1200, 1250, 1450, and 1650). This manual is an invaluable resource for both novice and experienced mechanics, allowing you to perform a wide range of repairs and maintenance tasks on your tractor. From basic maintenance procedures like oil changes and filter replacements to more complex repairs involving engine, transmission, and hydraulic systems, this manual covers every aspect of your tractor's operation. With its detailed diagrams, clear instructions, and comprehensive troubleshooting guides, you can confidently tackle any repair job, saving you time and money by avoiding costly trips to the dealer.

The IH International 86, 108, 109, 128, 129, 149, and 169 series of tractors, alongside their corresponding 800, 1000, 1200, 1250, 1450, and 1650 model variants, represented a significant evolution in International Harvester's agricultural machinery lineup. These tractors, produced from 1972 to 1985, were known for their robust build, powerful engines, and innovative features. The range boasted a variety of horsepower options, catering to a wide spectrum of farming needs. The 86 and 108 models were primarily designed for smaller farms, while the 128, 149, and 169 models were well-suited for larger operations. The "1000" series, introduced in 1977, featured a more streamlined design and incorporated many improvements, including a wider cab and enhanced operator comfort.

These tractors were powered by International Harvester's own diesel engines, ranging in size from 4.1 to 10.4 liters. Their durable construction, featuring a heavy-duty chassis and a strong transmission, made them capable of handling demanding tasks like plowing, cultivating, and harvesting. Many models incorporated advanced features for their time, including power steering, hydraulic power assist, and optional cab-mounted air conditioning. The introduction of the "Hydro-Shift" transmission on certain models further enhanced their versatility and ease of operation. These IH International tractors played a pivotal role in modernizing agriculture, contributing to increased productivity and improved efficiency on farms across the globe. Their legacy continues to be felt today, with many of these machines still in operation as reliable and durable workhorses.