Grillo G131 Manual De Uso Y Mantenimiento página 12

MAINTENANCE
The walking tractor "131" is designed to require very little maintenance. However, in order to keep the machine at
its highest performance the following operations are recommended:
– Check that all screws and nuts are always well tightened, particularly those fixing the tines, those of the engine
and of the rotary tiller at the flange.
– Lubricate the clutch and gas wires.
– Lubricate the sliding bearing of the handle lock stud.
– Check that the clutch wire always has a little clearance.
– Remove any leaves and grass that may have deposited on the little net situated around the engine pulley.
– Often check oil levels and clean the air filter frequently.
– Grease the machine coupling 2 or 3 times a year, by separating the rotary tiller from the flange.
– For machines supplied with electric starter keep the charging battery clips protected with a thin layer of Vaseline.
In case the machine is not to be used for a long period, remove the battery keeping it in a dry place and to recharge
it once per month at least.
Notice: to check oil levels always keep the machine in horizontal position.
ENGINE OIL:
Follow the directions in the instruction booklet carefully. However it is necessary to check oil level every 4 working
hours and change it every 50 hours. Use engine oil 15W40.
AIR FILTER:
Check oil level every 8 hours or even more frequently in very dusty environments. Use the same oil as for the engine
for any changes of oil, which should be effected quite frequently, or to restore the level.
GEARBOX OIL:
Check oil level every 50 working hours and if necessary add gearbox oil type MP 85 W/90. Change oil once per year.
To empty the gearbox of old oil unscrew the plug no. 18 on fig. 3.
TILLER GEARBOX OIL:
Check oil level every 100 hours unscrewing the screw on the tiller gearbox cover (fig. 8). Check that oil reaches the
edge of the hole.
If necessary add the same oil as for the gearbox. Change the oil once per year (quantity 0.400 kilos, about 1 lb.).
The observance of these rules helps to keep all the mechanical parts of your machine in perfect working order.
USEFUL ADVICE FOR GOOD RESULTS:
1) Do not keep the clutch disengaged too long.
2) Never leave the machine in the rain.
3) Do not strain the gear selector if the gears do not engage at once but work the clutch slightly while engaging it.
4) Never strain the engine too much; in case of excessive smoke from the exhaust pipe, reduce speed.
END OF SEASON MAINTENANCE
Wash the machine carefully; change the oil inside the engine, the gearbox and the tiller gearbox; clean the air filter.
Sharpen and grease the tines; if they are badly worn they should be changed.
Notice: when the tines are changed it is also necessary to change the central knife.
ROTARY TILLER
The rotary tiller is used to break the superficial layer of the ground in order to increase its permeability and at the
same time to get rid of weeds. Tillage must be effected at the lowest speed if the ground is hard and tough, at a
faster speed if it is soft and sandy. Tillage depth can be regulated by moving the central knife under the rotary tiller
body forward or backwards. To increase the depth, move the knife upward. Start work with the knife in the lowest
position and then raise it if greater depth is required.
N.B. If the machine jumps forward on very hard soils, the central knife should be lowered completely by fixing it in
the third hole. On normal or sandy soils keep the knife in the central hole and use the outer toothed rod to adjust
the working depth (6, fig. 2). Check that the knives have been fitted correctly (see fig. 8). Tillage width can be
LUBRICATION
I M P L E M E N T S
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