Grillo CL 75 Manuel D'utilisation page 13

CHECK THE AIR FILTER EVERY 4 HOURS, AND EVEN MORE SO IN VERY DUSTY
ENVIRONMENTS (FIG. 1, NO. 13). CHECK THE ENGINE COOLING SYSTEM INTAKE GRID
(FIG. 10). HYDROSTATIC AXLE
Check the expansion tank when the engine is cold: the tank must be empty (fig. 9, ref. A). Clean the
hydraulic motor cooling fins every 4 working hours. Clean them even more so during summer and/or in
very dusty environments (fig. 14). Replace the oil after the first 50 working hours, then every 200 hours,
use 10W60 engine oil – quantity: 1.85 lt. To replace the oil carry out the following operations:
1) remove the two taps (fig. 15);
2) remove the tap (fig. 17, ref. A) using a screwdriver;
3) screw the two caps (fig. 15) - (tightening torque 13-17 Nm).
4) add oil then replace the cap (fig. 17, ref. A);
5) make sure the expansion tank is empty. The correct oil level is 12 mm underneath the bottom of
the expansion tank (fig. 9, ref. A).
LUBRICATION POINTS WITH GREASE
Lubricate the following elements with grease every 50 hours: the front wheel pin (fig. 5, ref. A) and the
belt tightener (fig. 8, ref. B). Lubricate all the handlebar's joints, the cables, the chains and the differential
lock engaging device.
CHECKING THE BLADES AND CUTTING DECK
A blunt blade rips the grass, leaving it unattractive. Therefore both blade cutting edges must be always
well-sharpened. Sharpen both cutting edges using a medium-grain grinding wheel. If the machine
vibrates abnormally check that the blade is balanced by placing it on a round bar inserted in the central
hole. To remove a blade, hold of it firmly, always wearing work gloves, and unscrew the central screw.
Caution: it is the screw on the right (fig. 13). To install the two blades follow the scheme (fig. 13).
CAUTION!
Tighten the fixing screw firmly (fig. 13, ref. A). Always replace damaged or bent blades; never attempt to
repair them! To install the blades follow the scheme (fig. 13, ref. B). ALWAYS USE ORIGINAL BLADES!
Always check that the blade bolts are not worn out or damaged.
BLADE – ENGINE BELT
To adjust the belt tension operate on the register (fig. 7, ref. C) that is placed near the pulley on the blade
axle. During work, the spring should stretch up to 2 mm (fig. 7, ref. A). If the belt becomes twisted or
comes off, check pulley alignment. Take care when positioning the belt guides: move them towards the
belt. Guides must never touch belt (fig. 19).
HYDROSTATIC AXLE – ENGINE BELTS
Check the spring tension. To replace the belts, release the tension spring (fig. 16. ref. A).
BLADE ROTATION
To engage and disengage the blade, use the lever (fig. 1, no. 2). When releasing the levers the blade will
stop (fig. 1, no. 1). When engaging the blade, the engine must already be running at medium r.p.m and
the machine must not be in the grass for cutting. Disengage the blade by releasing the lever (fig. 2, ref.
A). The blade must stop within 5 seconds; if this is not the case, adjust the brake using the load spring
(fig. 6, ref. A) and replace the brake unit if necessary (fig. 7, ref. B).
Important: This operation must be carried out by an authorized Service Centre.
CHANGING THE BELTS
The movement is transmitted from the engine to the hydraulic transmission and to the blades by means
of two V-belts. Replace the belts if they show any sign of wear! Their replacement and subsequent
adjustment are fairly complex procedures and must be carried out by an authorized Service Centre. To
replace the belt going from the engine to the cutting deck, remove the belt guide on the engine pulley
(fig. 19). Note: the spring must be fixed to the ring again (fig. 7, ref. A).
ALWAYS USE GENUINE BLADES!
CL75/ Translation of the original instructions
11