Description

Genie GTH-3007, AGRI-730, GTH-2506, AGRI-625 2008 Service Manual

If you are pulling wrenches on a Genie telehandler that won’t lift or a hydraulic leak that has you chasing lines, you already know the cost of guessing wrong. One wrong torque on a wheel lug or a misread hydraulic schematic can turn a 4-hour job into a 12-hour one, or worse, put someone in the hospital. This is the factory-issued Genie **Service Manual** for the GTH-3007, AGRI-730, GTH-2506, and AGRI-625 models, dated 2008. It runs 194 pages and covers exactly what the engineers at Terex wrote down when these machines were built. No aftermarket compilation, no scanned reprints from a copy shop. This is the same binder that would sit on a dealer service manager’s desk.

Page 1 shows the serial number range for each model. For the GTH-3007, serial starts at 19051. For the AGRI-730, 19241. The GTH-2506 picks up at 18957, and the AGRI-625 at 19057. If your machine falls inside those ranges, this is the correct Genie Service Manual for your year of manufacture. Outside that range? You will need to check the part number 57.0009.0419 against your machine’s build date.

Safety Section: More Than Just a Warning Page

Chapter 1 is titled “Sicurezza” (Italian for safety) in the table of contents, but that is not a language barrier—Genie used the Italian engineering office for this series. The content is in English, and it spells out what you must do before any service. Lock out the hydraulics, chock the wheels, and follow the lift-arm support procedure. I have seen techs skip the prop on a boom and get crushed. This manual gives you the exact sequence to make that not happen. Page 26 outlines the charge pressure check for the hydraulic system—do not skip it.

Specifications: What You Need to Torque

Chapter 2, “Specifiche” (specifications), is where you will spend half your time. Every fluid capacity, every torque value for the engine, transmission, and wheel fasteners is listed in imperial units because this is the North American version. The operator’s manual for the GTH-3007 and AGRI-730 (part 57.0009.0445) is referenced here—you need that document for daily operation, but this service manual is for the heavy stuff. Engine oil capacity, hydraulic tank volume, tire pressures, all of it. If you are rebuilding a Manual Transmission on these machines, the gear oil specs are in this chapter. The same goes for the Manual Transmission used in the earlier AGRI-625—it is covered.

Maintenance Program: The Schedule That Keeps These Machines Running

Chapter 3, “ManProg” (maintenance program), gives you the hourly intervals. 10 hours, 50, 100, 500, 1000, and 2000. Each interval lists the exact inspection points, filter changes, and lubrication points with the correct grease type. This is the factory schedule—not a generic “change oil every 500 hours” guess. The Genie engineers designed the intervals based on the hydraulic system’s thermal load and the drive train’s duty cycle. Stick to it and you avoid the nightmare of a failed swivel joint on the boom.

Hydraulic and Electrical Schematics: Tracing the Lines

Chapter 6, “Schemi” (schematics), contains the hydraulic circuit diagrams and electrical wiring diagrams. These are not the simplified versions you get in aftermarket manuals. Each valve, solenoid, pressure switch, and connector is labeled with the Genie part number. If your AGRI-730 boom won’t raise, you can trace the pilot line from the control valve to the pump—page 73 shows the charge pressure test point. This is where having the factory schematic saves you from replacing parts that are not broken. For example, the GTH-2506 has a different pilot relief setting than the GTH-3007; the manual calls it out.

Genie GTH-3007 AGRI-730 Service Manual: What’s Inside

Beyond the obvious chapters, there are sections on troubleshooting (Chapter 5 “ICR”) and procedural instructions (Chapter 7 “Procedure”). The troubleshooting section uses a symptom-based approach: “Engine cranks but will not start” leads you to fuel system tests, glow plug circuits, and ECU codes. Every procedure includes required tool lists—like a specific spanner for the brake caliper or a Torx bit for the seat belt retractor. You do not get surprises halfway through. Also included are the electrical component location diagrams (Table T006 through T011) that show exactly where the relays live.

If you need a parts catalog to accompany this service manual, check the Genie GTH-3007 AGRI-730 2011 Parts Catalog or the Genie GTH-2506 2010 Parts Catalog. For a different machine family, the Genie Z-20/8N, Z-20/8, Z-25/8 2000 Service Manual – OEM Factory Specs covers a boom lift series.

Why Factory OEM Documentation Beats Aftermarket Every Time

Aftermarket manuals often combine multiple models into one book and use generalized torque values. This Genie Service Manual was printed in April 2008 by Terexlift, the manufacturer. The part number 57.0009.0419 is stamped on every page. The wiring diagrams are drawn to the exact revision of the harness that came on these machines. If you rely on a third-party reprint, you risk a misprinted hydraulic port size or a missing safety note. I have seen it happen—a guy used an aftermarket spec for a cylinder seal and the gland blew off on the first test lift. The factory manual is the only source you can trust for the GTH-2506 and AGRI-625 service.

Frequently Asked Questions

Does this manual cover the GTH-2506 and AGRI-625 models?

Yes. Page 3 lists the serial number ranges for all four models: GTH-3007, AGRI-730, GTH-2506, and AGRI-625. If your serial is within the listed range, this is the correct manual.

What is the difference between this service manual and the operator’s manual?

The operator’s manual (part 57.0009.0413 for the GTH-2506 and AGRI-625, 57.0009.0445 for the GTH-3007 and AGRI-730) covers daily operation, safety decals, and basic maintenance like fluid checks. This service manual—194 pages—covers everything else: full disassembly of the hydrostatic transmission, cylinder rebuild procedures with torque sequences, hydraulic pressure tests, wire color codes, and the complete electrical troubleshooting tree. If you are lifting the cab or pulling the engine, you need this manual. The operator’s manual will not tell you the 2000-hour valve adjustment specs; this one does on page 112.

You have the serial numbers, you know the models, and you understand the cost of using the wrong spec. Stop chasing ghost problems and start working off a document that has zero guesswork built into it. Access the Factory Manual now and get the 2008 Genie Service Manual for these four telehandler models.