9.—(1) The fee for the carrying out or supervision of an examination of a tractor or tractor component shall be paid when application is made for the issue of a certificate for the tractor or tractor component in question.
(2) The fee for the issue of a document of a type specified in column 2 of Schedule 2 shall be paid—
(a)in a case where the examination of a tractor or tractor component is required before the document is issued, when the applicant is notified of the result of the examination, and
(b)in any other case, when application is made for the issue of the document.