Grillo G55 Manual De Uso página 15

Translation of the Original Instructions
position of the two wings. The depth can be varied from 10 to 20 cm. When working on particularly
hard soils, till before furrowing. The results obtainable can be improved by fitting the 5.00-12 tyres
and if necessary the wheel-weights which increase the wheel grip.
CUTTING BAR
The cutting bar which can be attached to the walking tractor has a central or side control (fig. 13).
Its strength and high performance make it the best way of mowing small pieces of land when it is
not convenient to purchase a sickle mower which would remain unused for most of the year, while
a walking tractor can be used with other implements. The cutting bar is attached to the walking
tractor implement frame instead of the rotary tiller. The handlebar must be turned 180towards the
engine. Before turning the handlebar engage first gear, then release the drive levers. Once the
handlebar has been turned, fit these levers back into their supports.
Maintenance: grease the cross pins every 8 working hours through the grease nipples on the
swinging crank. Grease the cutting bar swinging bushing every 50 working hours through the
grease nipple under the swinging protection.
Keep the blade ledger plates properly adjusted. They must be neither too tight, so that they block
the blade, nor too loose so that there is too much clearance between them and the blades. To
adjust the ledger plates in both directions loosen the locking bolts (fig. 12) and adjust the pressure
screw. The ledger plates should be replaced when worn even if they are still able to apply pressure
against the blades. Adjust the freeplay between the blade and the strip by loosening the screws
fixing the plates pressing the strip and moving the strip forward until it touches the bar which
supports the nailed blade section. Then re-tighten the pressing plates. To remove the blade take
off the L-shaped blade coupling by loosing the two screws (fig. 27, n. 3) and slip off the blade. Take
care to tighten the fixing screws of the coupling after assembling the blade again. Always use
sharp blades: the machine will be subject to less strain and its working life will be longer. Clean the
cutting bar after every working day, removing any remaining pieces of grass or earth; frequently
that all screws are tight.
SNOW THROWER
This implement (fig. 14) has been especially designed for this particular walking tractor. It is very
useful for clearing snow from yards, driveways, etc. It consists of a turbine rotary unit enclosed in a
special case open at the front, which rotates at high speed, collecting the snow and throwing it
along a pipe. The pipe angle can be adjusted to throw the snow in any direction to a distance of 8 –
10 metres. The snow thrower is fixed to the implement flange using two nuts. The handlebar must
be turned through 180towards the engine; for this operation follow the directions outlined above
for the cutting bar.
The snow thrower is 60 cm wide and can clear snow up to 30 cm deep. Wheel weights or wheel
chains should be used to obtain a better performance. If the snow is very wet, keep the ejection
pipe turned forward to avoid obstructions at the outlet. The two side skids must be adjusted so that
they just skim level ground (asphalted streets) or keep the snow thrower high if the ground is
uneven.
Maintenance: when work is over, remove any snow left in the snow thrower so it cannot freeze
and block the turbine. Often check the oil level in the central box. Do not clean the attachment
when the engine is running. Attention, danger! Never touch the snow thrower while it is
working.
PLOUGHS
The ploughs (fig. 15) designed for this walking tractor have been especially developed to obtain
good ploughing without straining the operator. The models available are a single-share plough and
an 180roll-over plough. The latter is especially suitable when working backwards and forwards,
such as along rows of vines or fruit-trees. The depth of the furrow obtained may vary from 10 to 15
cm depending on the terrain. Better results are obtained by fitting the 5.00-12 tyres and if
necessary the wheel-weights which increase the wheel grip.
ROTARY CUTTER
The rotary blade cutter 50 cm for the walking tractor (fig. 20) is designed for the maintenance of
grounds with too high grass. The high power available, the driving wheels, the working speeds and
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