The Workshop Manual is intended to provide technical information, component specifications, troubleshooting and removal, disassembly and reassembly procedures for most of the major components of the machine. Certain components such as the engine, felling or harvesting heads, and control computer are covered in individual manuals provided by the respective manufacturers. For specifications, parts listings and servicing procedures, these manuals should be obtained to supplement the Workshop Manual. When practical, the Workshop Manual lists likely causes of malfunctions, offers test procedures to verify causes and then illustrates the steps for the adjustment or repair procedure(s).

Since it is never possible to anticipate all of the possible failure or malfunction scenarios, a concerted effort has been made to explain the function of, or method of operation, of many complex components. This information can be used to predict other causes of machine malfunction.

Troubleshooting must always be a multi-step process. Use the following steps:
I. Know the operation of all machine systems.
2. Ask the operator about symptoms and when they occur.
3. Operate the machine yourself if practical.
4. List all possible causes.
5. Inspect the machine for obvious causes.
6. Eliminate the simple ones by checking oil, changing filters, etc.
7. Carry out diagnostic procedures like pressure, leakage and slippage testing to pinpoint the cause.

When troubleshooting, there is no substitute for knowledge of the machine systems. This Workshop Manual contains both hydraulic and electrical system schematics. They should be used to gain a working knowledge of flow paths. Both sets of schematics are supported by component location charts or illustrations to assist in locating electrical and hydraulic components on the machine.