Electrical System; Important; Electronic Control Unit; The Machine Does Not Remain In Neutral - Grillo MD22 Manual De Instrucciones

Go-ahead not given for blade engaging
– Cutting deck not parallel to ground
– Blades fault
engine belt
– Blades unbalanced
– Fastenings are loose
– When PTO button is pressed,
the blade does not engage
ELECTRICAL SYSTEM
The electrical system is protected by a fuse which cuts out the entire electrical system if blown. After
finding and repairing the fault, replace the fuse with another of the same rating. Never replace the
fuse with one of a different rating. The electrical system fuses are underneath the tank (fig. 19). If the
problems persist after all the procedures described above have been carried out, contact the Authorised
After-Sales Service Centre. Never attempt to make difficult repairs unless you have the necessary
equipment and technical expertise.

IMPORTANT!


Take care not to reverse the battery polarity.

Never operate the mower without the battery, since it is equipped with a charge regulator.

Take care not to cause short-circuits.

ELECTRONIC CONTROL UNIT

Inside the steering column there is an electronic control unit (fig. 37) that controls all the electric
functions of the machine (e.g. PTO, safety micro-switches).

THE MACHINE DOES NOT REMAIN IN NEUTRAL

Adjust the zero turn device by tightening or loosening it (fig. 16).
to adjust the forward and reverse travel speeds, use the screws (fig. 17).
MD22/ Translation of the original instructions
When the blades are engaged the engine cuts out
Uneven cutting
Vibrations during operation
Incorrect P.T.O. engagement
– Check the blade-engaging microswitch
– Sit in the driver's seat
– Check tyre pressure
– Level off the deck
– Check that the blades are correctly mounted
– Sharpen or change the blades
– Adjust the tension of the cutting deck
– Balance blades or replace if damaged
– Check and fasten the blade fixing screws
as well as the fixing screws of the engine
and chassis.
– Check the battery voltage, it must be at least
12,5 volts
– Check the levelness of the blade brake
and the electromagnetic clutch, 0,3 mm
14