Grillo FD 2200 4WD Manual De Instrucciones página 13

In order to let the engine cool down correctly, there should be no air in the cooling circuit. Make sure that the
clamps on the water muffs are well tight and that no air can get into the circuit from the outside.
Make the air bleed in the following way:
1)Caution! For this operation always wear suitable working gloves.
2)With the liquid in the reservoir at the right level, start the engine and bring it to working temperature (to make sure
the engine thermostatic valve is open).
3)With the engine at minimum, open the engine cooling liquid refilling reservoir.
4)Unscrew the plug for the bleed on the upper part of the radiator (fig. 36).
5)With the plug open, accelerate to medium speed and slow down several times until plain liquid comes out.
6)Tighten the screw.
7)Accelerate again for some minutes.
8)Unscrew the bleed plug again and repeat the steps 5-6-7 four or five times until plain liquid comes out.
9)At the end, re-establish the liquid level in the reservoir and close the cap.
HYDRAULIC ENGINES
Check the level in the reservoir with cold engines (fig. 4). If more oil is needed, add hydraulic oil OSO 46 (total
quantity: 36 litres, fig. 6, ref. B). Carry out this control periodically.
Caution! Change the hydraulic oil in the hydraulic engines the first time after 500 hours and then every 1000 hours.
The oil must be changed before the first 500 hours if:
the oil is black;
-
- the oil has a whitish colour (it is contaminated with water);
- there is black residue (partial oil deterioration).
To remove the oil undo the lower oil reservoir plug (fig. 20). To fill it in, unscrew the upper cap (fig. 6, ref. B). 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 two oil filters (fig. 46, ref. B); pay attention to the
filtration level of each filter (10 and 60 micron) and not to mix the filters up. On the dashboard there is a warning
light connected to the filter blocking sensor that shows when the filter has to be replaced.
Do not increase the drive wheels hydraulic system pressure over 280 bar; the hydraulic pump and the hydrostatic
engines on the wheels may be damaged.
To regulate the cutting deck and the grass catcher hydraulic pressure you must work on the screw with jam nut
located on the hydraulic distributor. This operation must be carried out by an Authorized Service Centre (max.
pressure 230 bar).
155 cm CUTTING DECK GEAR BOXES
Use synthetic oil LSX 75 W 90 (API GL4 + GL5; API MT1 and PG2), 1.550 litres, to be changed every 300 hours.
The oil level plug is positioned over the gear boxes.
If you notice any leakage, check and replace the oil seals to avoid the deterioration of the entire transmission.
EMERGENCY AND PARKING BRAKE OIL
Every 50 hours check the brake oil level in the reservoir on the left side of the driving seat (fig. 40). If necessary,
add brake oil DOT4 (total quantity 0.5 litres). Periodically check the braking system to make sure there are no
leakage.
Whenever it is necessary, carry out the air bleed procedure. If you have the proper tool, connect it at the place of
the reservoir cap. If you have to carry out the bleed without the proper tool proceed as follows:
1) Put the oil into the reservoir.
2) Press the emergency brake pedal 3 times (fig. 1 no. 3): keeping the pedal pressed, slightly unscrew the drain
plugs on the calipers to let the air out.
3) Repeat the procedure twice, until the circuit gets under pressure when pressing the pedal.
4) Attention, the brake pedal has to have a little clearance to prevent that the circuit is steadily kept in pressure,
which would damage the brakes.
NOTE: Use the brake pedal only in case of emergency. To stop, just release the feed and reverse pedal.
SHARPENING THE BLADES
For the cutting deck check and maintenance proceed as follows:
1) lift the cutting deck hydraulically;
2) release the two side shock absorber (fig. 11);
3) lift the cutting deck by hand and hitch it with the special lever (fig. 22).
You do not need to release the universal joint nor the deck loading duct. Before starting the machine, make you
sure that the universal joint is well connected and that the stop push button is protruding.
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 both blades uniformly.
When you substitute the blades, it is compulsory to substitute also the screw and respective nut (fig. 23). Do not
lock the blade ends: they must be without play, but free to float if they hit against something.
To remove a blades' disc, hold it firmly using safety gloves and unscrew the fixing plate and the central screw.
FD2200 4WD/ Translation of the original instructions
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