Adjusting The Cutting Deck; Pto Belts - Grillo FM13.09 Uso Y Mantenimiento

Translation of the original instructions

ADJUSTING THE CUTTING DECK

An even deck is essential for achieving a uniform cut over the whole lawn.
With the lawnmower on a flat surface, check the tyre pressures, check the distance of the cutting deck edge from
the ground and act on the tie rod (fig. 24, ref. B) and on the adjusting screw to put it parallel to the ground. If a
satisfactory parallel set up cannot be achieved, contact an Authorised Service Centre. To adjust the 132 cm cutting
deck, turn the hand wheel (fig. 22).
To remove the deck from the mower, unhook the two side shock absorber (fig. 21 and fig. 20) and the two pins (fig.
24, ref. B).
Attention! When refitting the deck always remember to reconnect the universal joint.

PTO BELTS

Attention! These belts are special, USE ORIGINAL BELTS.
To replace them, loosen the tie rod and remove the clutch locking screw.
To set the tension use a no. 13 spanner to turn the nut that adjusts the tension spring (fig. 5, ref. A).
The spring must be compressed at 75 mm length.
PTO CLUTCH-BRAKE
The FM13.09 is provided with a multi-disc electro-hydraulic clutch for PTO activated by an electric push-button on
the dashboard. During work, with the PTO engaged, the friction material discs are pressed against each other by
the oil pressure. To make this happen, the working pressure is calibrated at 11 bar. All clutches are tested in
pressure to prevent oil leakage in the components. This construction design guarantees a long working life and a
gentle activation. In order to meet security requirements, the clutch for PTO has a brake that stops the cutting
blades within 7 seconds from the moment the clutch is disengaged. Due to the wear of the brake friction material
blades may need more than 5 seconds to stop, in that case it is necessary to re-establish the distance between the
disc and the plate to 38.8 mm (fig. no. 37) as per initial factory calibration. Carry out this intervention with the
machine turned off.
How to carry out the calibration:
1) Turn off the machine.
2) Loosen the counter-ring.
3) Bring the distance between the disc and the plate to 38.8 mm by acting on the ring.
4) Lock the counter-ring against the ring.
After adjusting it, make sure that the blades stop in less than 5 seconds. If the blades take 7 or more seconds to
stop contact an Authorized Grillo Dealer because the machine does not meet the safety standards and cannot be
used in a safe way.
CLUTCH ELECTROVALVE
The electrovalve of the clutch is located under the air filter (fig. 38). To inspect it or carry out controls remove the
side protection frame. Calibration is 11 bar. Never change it to avoid damages to the clutch seals.
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