"型式指定の変更申請"
"application for change of designation of type"

Please see the below translation taken from the document linked below.

第六条　（特定原動機の型式指定）
Article 6 (Designation of Type of Specified Engines)
１　主務大臣は、特定原動機の製作等を業とする者（以下「特定原動機製作等事業者」という。）の申請により、特定原動機をその型式について指定する。
(1) The competent minister shall designate the type of specified engines upon receipt of application from the person who engages in the manufacture etc. of specified engine as his/her business (hereinafter referred to as a "business operator that engages in the manufacture etc. of specified engines").