Hayter Mowers RZT420H - Manual (Page 19)

5. After the engine starts, move the throttle lever to
Fast (Figure 16). If the engine stalls or hesitates,
move the throttle lever back to Choke for a few
seconds. Repeat this as required.
Operating the Blades
The blade control switch, represented by a power
take-off (PTO) symbol, engages and disengages power
to the cutting blades. This switch controls power to any
attachments that draw power from the engine, including
the cutter deck and cutting blades.
Engaging the Blades
Important: Do not engage the blades when
parked in tall grass. Belt or clutch damage can
occur.
1. Release pressure on the motion control levers and
place the machine in neutral.
2. Move the throttle to the Fast position.
Note: Always engage the blades with the throttle
in the Fast position.
3. Pull up on the blade control switch to move it to
the On position and engage the blades (Figure 18).
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Figure 18
1. Control panel 2. Blade control switch—On
position
Disengaging the Blades
Push down on the blade control switch to move it to
the Off position and disengage the blades (Figure 19).
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Figure 19
1. Control panel 2. Blade control switch—Off
Stopping the Engine
1. Disengage the blades by moving the blade control
switch to Off (Figure 19).
2. Move the throttle lever to between Fast and half
throttle (Figure 17).
3. Turn the ignition key to Off (Figure 16).
The Safety Interlock System
If safety interlock switches are disconnected
or damaged the machine could operate
unexpectedly causing personal injury.
• Do not tamper with the interlock switches.
• Check the operation of the interlock
switches daily and replace any damaged
switches before operating the machine.
Understanding the Safety Interlock
System
The safety interlock system is designed to prevent the
engine from starting unless:
• The blades are disengaged.
• The motion control levers are in the park position.
The safety interlock system also is designed to stop
the engine when the control levers are out of the park
position and you rise from the seat when the blades
are engaged.
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