©2007 Alamo Group Inc.

DRIVING THE TRACTOR AND IMPLEMENT..................................................................................................4-23
Starting the Tractor ...........................................................................................................................................4-24
Brake and Differential Lock Setting...................................................................................................................4-24
Raising the Mower ............................................................................................................................................4-25
Driving the Tractor and Mower..........................................................................................................................4-25
OPERATING THE TRACTOR AND IMPLEMENT............................................................................................4-27
Foreign Debris Hazards ................ ... ... .................... ................... .................... ................... ................................4-28
Bystanders/Passersby Precautions ..................................................................................................................4-28
Engaging the Power Take Off (PTO) ................................................................................................................4-29
PTO RPM and Ground Speed ..........................................................................................................................4-30
Operating the Mower ............. .... ... ... ... .................... ... ... .................... ... ................... ... .......................................4-30
Shutting Down the Implement...........................................................................................................................4-33
DISCONNECTING THE MOWER FROM THE TRACTOR ..............................................................................4-33
MOWER STORAGE .........................................................................................................................................4-35
TRANSPORTING THE TRACTOR AND IMPLEMENT ....................................................................................4-35
Transporting on Public Roadways ................ ... .... ... ... ... ... .... ................... ... .... ... ... ................... .... ......................4-37
Hauling the Tractor and Implement...................... ................... ................... .......................................................4-38
TROUBLESHOOTING GUIDE .........................................................................................................................4-40

MAINTENANCE SECTION...................................................................................................5-1

Lubrication (Figure Mnt-0014).............................................................................................................................5-2
Gearbox Lubrication (Figure Mnt-0001 and Mnt-0011).......................................................................................5-3
Tail Wheel Lubrication ........................................................................................................................................5-3
Driveline Lubrication ...........................................................................................................................................5-4
Blade Servicing ...................................................................................................................................................5-5
Blade Sharpening ...............................................................................................................................................5-5
Blade Removal....................................................................................................................................................5-6
Blade Carrier Removal........................................................................................................................................5-6
Blade Carrier Installation.....................................................................................................................................5-6
Slip Clutch - GR60 ..............................................................................................................................................5-7
Seasonal Slip Clutch Maintenance ...................................... ... ... ... .... ... ... ... .... ... ................... ... .... ........................5-7
Torque Limiter - GR72 ........................................................................................................................................5-8
Seasonal Torque Limiter Maintenance ...............................................................................................................5-8
GR60 Gearbox Maintenance ..............................................................................................................................5-9
Right Angle Gearbox (Outboard) Assembly & Disassembly Procedures..........................................................5-10
Input Shaft Removal ........... ... .... ... ... ... .... ... ... ... .... ................... ................................... .......................................5-10
Output Shaft Removal.......................................................................................................................................5-10
Parts Inspection ................................................................................................................................................5-10

Output Shaft Installation 11

Input Shaft Installation ........ ..............................................................................................................................5-11
Storage .............................................................................................................................................................5-12
Proper Torque For Fasteners ...........................................................................................................................5-12