8999123: v1 18/06/2018
Page 5.2 of 5.5 pages
Original instructions (ENGLISH)
Website: www.spearheadmachinery.com
WARNING!
The machine must be checked by an authorised concessionary if any of its parts are worn
or in poor condition.
WARNING!
Replace the hydraulic tubes each time they are damaged or, in any case, before the sixth
year. The used hydraulic oil must be properly collected and must not be dispersed into the
environment since, according to the laws in force, it is classified as dangerous waste and for this
reason it must be given to the proper collecting centres. Please, refer directly to the closest company
for the collection of the used oils.
5.1.1
Maintenance on the Widia Teeth
WARNING!
Spearhead is not liable for damage caused by the vibrations generated by mulching rotors
that are not balanced after replacing the Widia teeth. Any requests for replacement under warranty or
reimbursement for damage caused due to the rotors malfunctioning will not be accepted.
The Widia teeth, with which the mulcher is equipped, are suitable for work on normal terrain. It is mandatory to check
their intactness and state of wear daily. Should the Widia teeth break or deform during work, they must be replaced
immediately. Replacing an individual tooth is not recommended. This can be done only when all the other teeth are in
optimal condition and, in any case, in order not to compromise the proper operation of the rotor, it is mandatory to also
replace the opposing tooth so as not to cause an imbalance in the masses.
To guarantee perfect operation, we recommend always replacing all the Widia teeth rather than just the damaged
ones. After replacing the teeth, it is mandatory to electronically re-balance the rotor to guarantee the proper operation of
the mulcher without vibrations, which can cause serious damage to the machine.
To replace worn or broken teeth it is necessary to:
5.1.1.1 Position the mulcher and tractor on flat ground;
5.1.1.2 Raise the mulcher with the tractor linkages to the maximum height possible;
5.1.1.3 Place adequate support stands under the mulcher on both sides for the machine to be perfectly stable;
5.1.1.4 Halt the tractor and put on the emergency brake;
5.1.1.5 Be equipped with adequate tools and proceed with the replacement of the teeth: forcibly tighten the securing
screws;
5.1.1.6 Before installation, weigh the individual Widia teeth as differences in weight are inevitable;
5.1.1.7 Select pairs of Widia teeth that have the same weight and mount them on the rotor in opposite diametrical
positions.
