Your TB250 just rolled past 250 hours with the oil, fan belt and air cleaner all due, and the 255-page Takeuchi TB228, TB235, TB250 operator manual PDF (OEM ID AG7E017) lays out that service and every other job for all three mini excavators. Maintenance takes up a full quarter of the book, running from the 10-hour daily check through crawler tension, slew bearing grease and travel motor gear oil to the 4000-hour hydraulic oil change. Specifications list operating ranges and lifting capacities, and the controls chapter explains each warning lamp, switch and ISO or JCB lever pattern. Fill the TB250 oil pan to 7.4 L (3.6 L on the TB228), then spin on a new fuel filter one turn past packing contact: 19.6 to 23.5 N·m with a filter wrench. Every hour it sits, you're paying a crew to wait. Bookmarks and a searchable text layer find the page fast, so your excavator is digging again that shift.
What's Inside This Operator Manual
| System | Pages | Key Topics |
|---|
| Introduction | 4 | Foreword, Manual Storage Compartment, Serial Numbers, Machine Number, Engine Number |
| Machine Description | 5-10 | Front, Rear, Left and Right, Designated Operations, Features, Break-In Period |
| Safety | 11-44 | General Precautions, Precautions When Preparing, Precautions When Starting, Precautions When Operating, Precautions When Stopping, Precautions When Transporting |
| Controls | 45-88 | Names of Components, Covers (Starter Key, Front Cover, Fuel Lid, Fuel Filler Port, Side Cover, Engine Hood) |
| Operation | 89-116 | Before Starting Operation (Getting on or Off the Machine, Walk-Around Inspection, Daily Inspection) |
| Transport | 117-122 | Loading and Unloading, Hoisting the Machine, Securing the Machine (Precautions to Be Taken During Transportation) |
| Maintenance | 123-186 | General (Maintenance Overview, Cautions on Maintenance) |
| Troubleshooting | 187-200 | Symptoms That Are Not Malfunctions, If the Engine Overheats, If the Battery Goes Dead, If a Fuse Blows (Inspecting: and Replacing the Fuse, The Fusible Link) |
| Specifications | 201-234 | Basic Specifications, Machine Dimensions, Operating Ranges, Lifting Capacities |
| Options | 235-255 | Safety Precautions (Cautions When: Installing Attachments, Operating Attachments), Attachment Combination Table |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| All Models |
| Engine oil filter replacement interval | Every 250 hrs after the initial 50 hrs. | p. 129 |
| Fuel filter tightening torque | 19.6 to 23.5 N·m or 14 to 17 ft-lb | p. 161 |
| Tightening Torque: Filter Wrench | 19.6 to 23.5 N·m (14 to 17 ft-lb) | p. 143 |
| Tightening Torque: Travel Motor Drain Plug | 177 N·m (130 ft-lb.) | p. 147 |
| Tightening Torque: Side Cutter Bolts | 241 N·m (178 ft-lb) | p. 173 |
| Tightening Torque: Bucket Gap Adjustment Bolts | 54.9 N·m (40.5 ft-lb.) | p. 176 |
| Tightening Torque: Lowering Boom Adjusting Screw Lock Nut | 19.6 N·m (14.5 ft-lb) | p. 198 |
| TB228 |
| Engine Oil Pan Capacity (Upper Limit) | 3.6 L (3.8 US qt.) | p. 128 |
| TB235 |
| Engine Oil Pan Capacity (Upper Limit) | 4.7 L (5 US qt.) | p. 128 |
| TB250 |
| Engine Oil Pan Capacity (Upper Limit) | 7.4 L (7.8 US qt.) | p. 128 |
| Fuel Tank Capacity | 73 L (19.3 US gal.) | p. 128 |
| TB228, TB235 |
| Fuel Tank Capacity | 53 L (13.9 US gal.) | p. 128 |
