Michigan Compiled Laws, Chapter 324. Natural Resources and Environmental Protection § 324.82113

Sec. 82113. (1) The owner of a snowmobile having been issued a certificate of registration for the snowmobile shall affix to each side of the forward half of the cowl above the footwell of the snowmobile the registration decal assigned to that snowmobile.The registration decal shall be as prescribed by the department. Beginning July 1, 1999, the registration decal shall include the registration expiration date and the registration number and shall contain 2 letters and 4 numbers. The numbers shall contrast so as to be distinctly visible and legible. A number other than the number awarded to the snowmobile on the registration certificate, or granted reciprocity under this part, shall not be attached or otherwise displayed on the snowmobile.

(2) Not earlier than 90 days before the expiration date of a certificate, a registration decal or other device may be issued indicating that the certificate of registration is in full force and effect.

(3) A certificate of registration shall expire pursuant to section 82105.

(4) The department of state may award a certificate of number directly or may authorize a person to act as its agent for the awarding of a certificate of number.