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When the balance is lost, the hammer knife will vibrate because it is rotating at high
speed, which is very dangerous. Exercise care sufficiently.
10. Hammer knife
10-1. Use of both sides of hammer knife
Both sides of the hammer knife are sharpened. When one side is worn, remove the
pair of knives, and attach them reversely. The knife is attached to the knife shaft
mounting hitch section by 11 mounting pin 32 and the nut with disc washer, and the
knife can be removed easily.
Attach the mounting pin in the same direction as before.
The tightening torque of the knife mounting bolt is 32-36 N.m (almost the same as
ordinary M10 bolts).
The knife shaft assy is balanced when shipped from our factory; therefore, unless
all the knife blades of the same weight each are replaced at one time, or unless
replaced symmetrically on the right and left portions of the knife shaft, the weight
balance may be lost and vibration may be generated.
Since the hammer knife shaft assy are rotated at high speed, pay attention to the
weight balance when replacing the hammer knife.
10-2. Replacement of hammer knife
When both sides of the hammer knife blade are worn, grind each blade in a manner
that the weight of each blade will be the same as much as possible.
When the weight balance of the hammer knife shaft assy including the knife blades is
poor, the hammer knife shaft assy will generate vibration, breaking the machine.
10-3. Grinding the hammer knife
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12
Wear protective goggles and gloves when grinding the hammer knife.
CAUTION
CAUTION
C A U T I O N
C A U T I O N
The step is kept horizontal at all times by the angle sensor, automatic level
control box and electric cylinder. The "step control changeover switch" atop the
electrical equipment box permits switching from AUTO to MANUAL, and vice
versa. When the step control changeover switch is in the "MANUAL" position,
the "step control manual switch" on the control panel permits control.
9-6. Step (simple riding unit)
9-7. Transportation on public roads
For transporting this machine through public roads, follow the appropriate laws of
the country where it is moved.
9-8. Alarm buzzer
When the alarm buzzer sounds, the engine is overheated. Stop operation, and
remove dust that is jamming in the radiator or air cleaner etc.
When the machine is not to be moved, pull the side brake lever fully to your side,
and the brake will be applied to the hydraulic motor and the traveling lever will be
locked at the neutral position.
9-9. Side brake
CAUTION
CAUTION
Impact to the step will impose a burden on the supporting point, causing failure.
Exercise care so as not to strike the step against any object when moving the
machine backward or turning the machine.
CAUTION
However, be sure to set the step control changeover switch in the "AUTO"
position during mowing. Use the manual position only when maintaining the
machine, the automatic control circuit fails, or some other emergency arises.
When the automatic circuit fails, replace the part with a new one immediately. Do
not operate the machine for mowing on the manual control step.
CAUTION