Grillo FX 20 Zero turning Manuel D'utilisation page 11

To remove the oil remove the filter (fig. 10, ref. A). Then install the new filter and pour in oil from the
balance reservoir (fig. 5, ref. A). Pay attention to possible impurities, which may get into the circuit,
causing serious problems to your machine.
When you change the hydraulic oil, you must also change the oil filter; pay attention to the filtration level.
Always keep the hydraulic transmissions housing clean to guarantee that the oil is cooled by the
ventilation fins. If they are damaged, they have to be replaced.
GREASE LUBRICATION POINTS
Find the lubrication points following the scheme (fig. 2 no. 3). Every 40 hours grease the blade hubs, the
feed levers, the cutting deck lifting parallelogram, the pin connected to 2 points joint of the cutting deck,
the stabilizing cylinder ball-joints.
MACHINE STABILIZING DEVICE
The FX 20 has got a device that improves the machine's manoeuvrability on slopes. A oildynamic
cylinder (fig. 11) on the lower side of the frame intervenes when the rear wheel of the machine is slightly
lifted from the ground and blocks it. The oildynamic cylinder is controlled by a pendulum (fig. 6, ref. B)
that detects the slope. In this way, you have an optimum traction uphill and a remarkable stability of the
machine's rear part downhill.
Periodically check the oil level in the device (fig. 6, ref. A) and grease the oildynamic cylinder ball-joints.
Never fill the oil reservoir completely to avoid spillage. The perfect level is the half of the oil reservoir
capacity. Only use hydraulic oil OSO 10.
CUTTING DECK TILTING AND BLADES SHARPENING
For the cutting deck control and maintenance proceed as follows:
1) Start the engine;
2) Unhook the two red cutting deck blocking levers (fig. 12, ref. A);
3) Tilt the foot rest platform until it is stuck in the corresponding rubber buffers (fig. 13, ref. A);
4) Keep the deck lifting switch pressed (fig. 1, no. 4) until the complete tilting of the cutting deck (fig. 22).
The switch has to be pressed in the direction that approaches the cutting deck to the ground;
5) Release the switch.
6) Turn the engine off.
7) ATTENTION! Connect the security locks as per fig. 23 and remove them only once maintenance
has been carried.
It is not necessary to unhook the PTO belt.
Attention! It is possible to tilt the cutting deck also with the machine's engine turned off. However, we do
not recommend this operation in order to allow the alternator integrated on the engine to compensate the
current absorption during the tilting. When you tilt the cutting deck with running engine the battery will
live longer and the tilting will be quicker.
A blunt blade pulls at the grass giving it an unsightly appearance, the cutting edges of the blades must
therefore be kept sharp at all times. As the blades wear they lose their cutting efficiency and tend to
become unbalanced, causing the lawnmower to vibrate; sharpen all three blades evenly.
When you replace the blades, it is compulsory to replace also the screw and the respective disc spring
(fig. 22, ref. B).
To remove a blade, hold it firmly using safety gloves and unscrew the central screw clockwise. Replace
the blade, make sure to screw the fixing screw tightly.
Caution! Always replace damaged or bent blades; never try to repair them!
ALWAYS USE ORIGINAL BLADES!
Once the maintenance is completed, press the deck lifting switch again (fig. 1, no. 4) to put the cutting
device into the working position. When it is parallel to the ground, lower the mobile foot rest platform (fig.
13, ref. B) and fix the cutting deck with the corresponding red blocking levers (fig. 14, ref. A).
Note: If the red locking levers should be hard to insert:
- check that the cutting deck has finished the tilting phase and is parallel to the ground;
- check that the red blocking levers are well lubricated with grease;
- increase the load on the spring for the cutting deck floating by screwing the adjustment knob (fig. 1, no. 8).
If this does not give a result:
- loosen the four bolts on the tilting hinges (fig. 15, ref. A) and adjust the concentricity of the holes of the
blocking levers until they are inserted. When the operation is completed, screw the tilting hinge bolts tightly.
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 cutting deck's edge distance
from the ground and act on the tie rod (fig. 16, ref. A) and on the adjusting screw (fig. 15, ref. B) if
FX 20 / Translation of the original instructions
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