I have an Original I&T Shop Service Manual, from 1971, for Oliver Series 1550, 1555, 1600, 1650, 1655, and Cockshutt Series 1550, 1555, 1600, 1650, 1655 Tractors, Manual No O-23. Engines are for Series 1550 and 1555 (Oliver, 6-Cylinder, (Non-Diesel is 232 Cubic Inch), (Diesel is 232 Cubic Inch), 1600 Engine is (Oliver, 6-Cylinder, (Non-Diesel is 231 (1) and 248 Cubic Inch), (Diesel is 265 Cubic Inch), 1650 and 1655 Engine is (Oliver, 6-Cylinder, (Non-Diesel is 265 Cubic Inch), (Diesel is 283 Cubic Inch). The manual has the following Contents: Belt-Pulley, Brakes, Carburetor, Clutch, Cooling System, Creeper Drive, Diesel System, Differential, Electrical, Engine, Final Drive, Front System, Governor, Hydra-Power Drive Unit, Hydraul Shift, Hydraulic System (Other than Depth-Stop Cylinder), Hydraulic System (Depth-Stop Remote Cylinder System Only), Power Steering, PTO, Reverse-O-Torc, Steering Gear-Manual, and Transmission. The manual is 136 pages and in ok condition with light staining throughout. This is not a repair manual but a familiarization manual for a technician.

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