Grillo FD450, Operator'S Manual, Page: 20 / 120

FD450/ Translation of the original instructions
the driver's seat. In this way the hydraulic valve is relieved. Push the button to open the grass-
catcher (fig, 5, n. 13) and open the grass-catcher manually. The battery is located under the grass-
catcher in the rear part of the machine (fig. 33, A). If it is out of order, the battery can be removed
and recharged.
FUNCTIONS OF THE MAIN ELECTRICAL COMPONENTS
- A safety sensor detects if the grass-catcher is in its working position (fig. 13, F). Otherwise the
blades will not engage.
- On the forward pedal there is a micro-switch that allows to start the machine only if the pedal is in
neutral/idle position (fig. 30).
- A micro-switch is located on the parking brake (fig. 28A, A) that detects when the brake is
engaged and allows the engine to stay on even if the operator is not seated. This micro-switch also
switches off the engine if the forward pedal is pressed when the parking brake is engaged.
- On the electromagnetic clutch (fig. 12, B) there is a diode preventing back current.
- A sensor is located in the grass-catcher disengaging the blades when the grass-catcher is full
(fig. 38, A).
- Inside the steering column there are an electronic control unit (fig. 36) that controls all the electric
functions of the machine (e.g. PTO, safety micro-switches...) and a relays that controls the electric
buttons (fig. 35, A).
FINISHING WORK
When you finish mowing, disengage the blades. To stop the machine, release the forward pedal
(fig. 1 n. 1), set the throttle lever to the minimum and turn off the engine by turning the key into
STOP position (fig. 4, n. 15). Engage the parking brake (fig. 3, n. 7) by pulling the lever into the “P”
parking position.
CLEANING
Internal cutting deck washing: this operation must be done on a solid floor. You have to connect a
water pipe to the proper joint (fig.31, A) and let the water flow for a few minutes:
- the driver must be seated in the driver's seat.
-
the engine must be running;
-
the gearbox must be in neutral gear;
-
the blades must be engaged.
During this procedure, the cutting deck must be set in its lowest position.
Never use a high-pressure power jet to wash out the engine compartment: use compressed air or
a vacuum cleaner only.
DISCHARGE CHUTE
To remove the chute (fig. 32, A) first open the grass-catcher, lift both red safety locks (fig. 32, C)
and remove the chute by pulling it to the top.
TOW BAR
It can used to connect a garden trailer or a small roller for sports grounds (fig. 33, B). Max. towable
weight: 130 kg on flat ground. Use the machine at low speed and always pay maximum attention.
OPTIONAL MULCH KIT
Assembly Instructions
- Remove and keep the two existing blades.
Caution: the right blade bolt has a left-hand thread.
- Fix the two mulching blades (fig. 43, A - B) using the same nuts, bolts and spacers provided with
the mulching kit (fig. 44, D).
- Set the black mulching plate (fig. 43, C) on the mower's deck discharge chute. It must completely
fit to the end of the discharge chute and must be well aligned with the blade's rotation axis.
- Fix the black mulching plate on the upper part of the mower deck using the appropriate bracket
(fig. 45, E) the rod (fig. 45, F) and the other delivered fixing elements (washer and nut).
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