Textron 62706, Safety, Operation And Maintenance Manual

Page: 46 / 108

en-46
7 OPERATION
7.7 CUTTING CYLINDER LIFT & LOWER RATE & SYNCHRONISATION____________
The valves that control the rate and sequence in which the cutting units rise and fall are set at the factory, how -
ever they can be reset or altered using the following steps.
1. Start the machine and run the engine at full throttle for 15-20 minutes to ensure that the oil is at the
optimum temperature.
2. To set up sequencing lift/lower of the front & rear unit.
Open all three valves fully. Screw the single front unit
adjuster (C) in until the rate of lift/lower is acceptable.
3. Use the two rear valves the upper valve (A) for lower
and the lower valve (B) for lift to provide the
sequencing of the centre unit.
4. Cycle the cutting units to check the synchronisation.
The centre cutting unit should lower and lift slightly
after the front cutting units.
If the cylinders drop too quickly or are not
synchronised correctly then they should be adjusted
accordingly.
The upper valve (A) at the rear of the machine adjusts
the rate at which the centre cutting unit lowers.
The lower valve (B) at the rear adjusts the rate at
which the centre cutting unit lifts.
The valve (C) under the operators seat adjusts the
rate at which the front cutting units lower.
5. If it is not possible to get the sequencing of the rear
cutting unit correct this may be because the front
cutting units are set to lower too slowly. Try
increasing the speed of drop slightly.
6. Once the cutting units are lifting and lowering
correctly tighten each of the grubscrews found on the valves to lock the settings.
7.8 OPERATION OF THE MACHINE _________________________________________
BEFORE OPERATING FOR THE FIRST TIME
• Check and adjust tyre pressure, if necessary, see section 4.2 Specification.
• Add fuel to the fuel tank if necessary.
• Check engine oil and top-up, if necessary.
• Check radiator coolant and top-up, if necessary (50% antifreeze solution).
• Make sure you understand the information contained in the previous sections.
B
A
C
Centre Unit Lift & Lower Valves
Front Unit Lower Valve