6—OPERATION
See Section 4.0 in the National Mower Hydro 70 Operators Manual for unit operation.
7—ADJUSTMENTS
7.1—ADJUSTMENTS
Read each instruction completely and make sure you understand it before making any adjustment. Follow all the safety precautions.
To avoid possible serious bodily injury, before making any adjustments or performing maintenance, place all tractor controls in Neutral, engage parking brake, fully lower cutting units to the ground, turn ignition switch “Off” and remove key.
NATIONAL® HYDRO 70" TRIPLEX
TRACTION PEDAL
TRACTION PEDAL
SAFETY SWITCHES
THREADED ROD &
ROD END
PUMP CONTROL
BEARING
7.2—TRACTION PEDAL
ADJUSTMENT
The Traction pedal is equipped with two safety switches and a neutral centering device. The switches prevent the engine from starting when the pedal is positioned in reverse or forward. The centering device locates neutral positioning of the pump.
Prior to adjusting for creep, elevate the wheels off the ground and support the vehicle securely. Any adjustments should be done while the hydraulic oil is warm.
To adjust the creep of the drive wheels loosen the fastener attaching the ball bearing to the control arm and move the bearing within the slot to achieve neutral.
Once the traction pedal has been adjusted, the switches may have to be
7.3—REEL CONTROL CLUTCH ADJUSTMENT
The reel control clutch idler is preset at the factory. However, if adjustment is necessary, the position of the idler can be adjusted with the clevis on the clutch rod. Loosen the jam nut that locks the clevis to the clutch rod and turn the clevis further onto the rod until proper tension is achieved, and
CLEVIS
CLUTCH ROD
CLUTCH IDLER
LIFT STRAP
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