Grillo FD900 4WD, Operator'S Manual, Page: 18 / 90

Translation of the original instructions
DIESEL DECANTING DEVICE
The decanting device (fig. 40) prevents liquid impurities in the diesel or water from depositing on the bottom and
therefore from getting in contact with engine parts. Clean the decanting device every 250 hours and wash the inside
with clean diesel too. Check the decanting device at every use. For the cleaning and the exact maintenance
intervals please follow the instructions and advice in the engine manual. Attention! When you fill up the diesel tank,
always use a very fine filter.
CLEANING
Clean the deck, the entry ducts and the grass catcher. Do not wash the engine compartment with water under
pressure, use compressed air or a vacuum cleaner.
TOW HITCH
The tow hitch is located at the rear of the mower. The max. towing weight is 200 kg on flat ground.
TOWING THE MACHINE WITH SWITCHED OFF ENGINE
Importamt: To tow the machine in case of engine failure unscrew by three turns the screw on the hydrostatic pump
(fig. 41) by using a 17 mm key; pay greater attention because doing so the efficiency of the self-braking device is
cancelled.
Tow the machine at very low speed and only on small distances, maximum 100 metres, to avoid
seizing the hydraulic pump or engine.
STORAGE AND LACK OF USE FOR LONG PERIODS
Store the machine in a dry environment, sheltered from bad weather conditions and, if possible, covered up. Clean
the machine from grass and/or ground residues.
If the machine is to be out of use for more than 30 days, detach the
red cable from the battery and follow the engine manual instructions. Remember to lubricate all the joints. Regularly
check that the battery voltage does not go under 12,5 Volts. If it is below, recharge the battery.
MAINTENANCE SUMMARY TABLE
PROCEDURE EVERY
8 HOURS
AFTER THE
FIRST
20 HOURS
EVERY
50 HOURS
EVERY
100 HOURS
EVERY 250
HOURS
Engine oil Check the level 
Change 
(first change)

Air filter Check

Replace *
Hydraulic oil Check the level 
Replace 
(first change
after 500
hours, then
every 1000
hours)
Check that the cooler intake grid is
clean 
Check that blades are well
sharpened and well-fixed
 
Lubricate with grease 
Diesel filter Check 
Replace *
Deck gearbox Replace

(every 300
hours)
Diesel decanting device Check 

recommended procedure
* procedure to be carried out if necessary
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