Fayat Group BOMAG BT 65 Operating Instruction, Maintenance Instruction page 20

Concerning your safety – Definition of responsible persons
n have made himself familiar with the operation of the machine,
n be physically and psychologically able to drive and operate the
machine.
Persons under the influence of alcohol, medicine or drugs are not
allowed to operate, service or repair the machine.
Maintenance and repair work requires specific knowledge and
must therefore only be performed by trained specialists.
BT 65 21