34Forward1. Press the traction pedal fully forward until theNo. 5 section, valve spool is completely pulledout.2. The pedal should contact the pedal stop. If thepedal contacts the stop before the spool iscompletely out, or if the pedal does not makecontact with the stop, the stop must be adjusted.Figure 441. Fully forward2. Pedal stop3. Reverse4. Control rod3. Loosen the hex nut securing the threaded rod tothe frame. Turn the flange nut on the rod to raiseor lower the stop (rod), while checking the pedal.4. When completed, tighten the nut.Reverse1. Press down on the rear of the traction pedal(reverse) until the No. 5 section spool valve iscompletely pushed in.2. Check the distance between the bottom of thepedal and the footrest, as shown in Fig. 48.Distance should be approximately 4.8mm. If thedistance is greater or less than 4.8mm, anadjustment to the traction control rod is required.3. Remove the jam nut and ball joint securing thecontrol rod to the traction shaft pivot.4. Loosen the jam nuts securing the ball joints tothe control rod and adjust the ball joints andcontrol rod to attain 4.8mm dimension whenreinstalled.Adjusting the Cutting UnitLift/Drop1. The machine’s cutting unit lift/drop circuit isequipped with a flow control valve. This valve ispre-set at the factory at approximately 3-1/2 turnsopen, but an adjustment may be required tocompensate for differences in hydraulic oiltemperatures, mowing speeds, etc. If anadjustment is required, proceed as follows:Note: Allow hydraulic oil to reach full operatingtemperature before adjusting the flow controlvalve.2. Raise the seat and locate the flow control valvemounted to the main control valve.Figure 451. Flow control valve3. Loosen the jam nut retaining the adjusting knobon the flow control. When loosening the jam nut,hold the flow control knob to prevent it fromrotating.4. Rotate the knob 1/4 turn counterclockwise if thecenter cutting unit is dropping too late or turn it1/4 turn clockwise if the center cutting unit isdropping too early.5. After achieving the desired setting, hold the knobto prevent any further rotation and tighten thejam nut.