Exhibit 4.1

AMENDMENT TO RIGHTS AGREEMENT

This Amendment (the “Amendment”), dated as of September 7, 2008, between Gehl Company, a Wisconsin corporation (the “Company”), and American Stock Transfer & Trust Company, a New York banking corporation (“AST”), to the Rights Agreement between the Company and AST, dated as of May 25, 2007 (the “Rights Agreement”).

W I T N E S S E T H

WHEREAS, pursuant to Section 27 of the Rights Agreement, under circumstances set forth therein, (i) the Company may supplement or amend any provision of the Rights Agreement without the approval of any holders of certificates representing Common Shares of the Company, and (ii) upon the delivery of a certificate from an appropriate officer of the Company which states that the proposed supplement or amendment is in compliance with the terms of Section 27 of the Rights Agreement, the Rights Agent shall execute such supplement or amendment; and

WHEREAS, the Company desires to amend the Rights Agreement as set forth herein and to direct AST as Rights Agent to execute this Amendment.

NOW, THEREFORE, in consideration of the promises and the mutual agreements herein set forth, the parties hereby agree as follows:

Section 1. Direction to Rights Agent. The Company hereby directs AST, in its capacity as Rights Agent and in accordance with the terms of Section 27 of the Rights Agreement, to execute this Amendment.

Section 2. Certification of Appropriate Officer. The undersigned officer of the Company, being duly authorized on behalf of the Company, hereby certifies on behalf of the Company to AST that (a) he is an “appropriate officer” as such term is used in Section 27 of the Rights Agreement, and (b) this Amendment is in compliance with Section 27 of the Rights Agreement.

Section 3. Amendment of Rights Agreement. The Rights Agreement is hereby amended as follows:

(a) Section 1 of the Rights Agreement is hereby amended by inserting the following subsections at the end of such Section 1:

“(n) “Merger” shall have the meaning set forth in the Merger Agreement.

(o) “Merger Agreement” shall mean the Agreement and Plan of Merger, dated as of September 7, 2008, by and among Manitou BF S.A., a French limited company (Société Anonyme), Tenedor Corporation, a Wisconsin

corporation and direct wholly-owned subsidiary of Manitou BF S.A., and the Company.”

(b) Section 1(a) of the Rights Agreement is hereby amended by inserting the following sentences at the end of such Section 1(a):

“Notwithstanding anything in this Section 1(a) to the contrary, neither Manitou BF S.A., nor any of its Subsidiaries (collectively, “Manitou”) shall be, or shall be deemed to be, an Acquiring Person by virtue of or as a result of (A) the execution of the Merger Agreement or any agreements, arrangements or understandings entered into by Manitou contemplated by the Merger Agreement, if such agreements, arrangements or understandings are in accordance with the terms and conditions of the Merger Agreement; (B) the announcement of the Merger Agreement or the Merger; (C) the consummation of the Merger; or (D) the consummation of the other transactions contemplated by the Merger Agreement upon the terms and conditions of the Merger Agreement. Each event described in subclauses (A), (B), (C) and (D) is referred to herein as an “Exempted Transaction”.”

(c) Section 1(c) of the Rights Agreement is hereby amended by inserting the following sentence at the end of such Section 1(c):

“Notwithstanding anything in this Section 1(c) to the contrary, Manitou shall not be deemed to be a Beneficial Owner of, or to beneficially own, any securities solely by virtue of or as a result of any Exempted Transaction.”

(d) Section 1(l) of the Rights Agreement is hereby amended by inserting the following sentence at the end of such Section 1(l):

“Notwithstanding anything in this Section 1(l) to the contrary, a Shares Acquisition Date shall not be deemed to have occurred by virtue of or as a result of the public announcement of any Exempted Transaction.”

(e) Section 3(a) of the Rights Agreement is hereby amended by inserting the following sentence at the end of such Section 3(a):

“Notwithstanding anything in this Section 3(a) to the contrary, a Distribution Date shall not be deemed to have occurred by virtue of or as a result of any Exempted Transaction.”

Section 4. Effectiveness and Continued Effectiveness. In accordance with the resolutions of the Company’s Board of Directors adopted on May 25, 2007, the amendments to the Rights Agreement set forth in Section 3 above are effective as of the time at which such resolutions were adopted. The parties hereto hereby acknowledge and agree that, except as specifically supplemented and amended, changed or modified in Section 3 above, the Rights Agreement, as previously amended to the date hereof, shall be unaffected by this Amendment and remain in full force and effect in accordance with its terms.

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Section 5. Execution in Counterparts. This Amendment may be executed in any number of counterparts and each of such counterparts shall for all purposes be deemed to be an original, and all such counterparts shall together constitute one and the same instrument.

Section 6. Defined Terms. Except as otherwise expressly provided herein, or unless the context otherwise requires, all terms used but not defined herein shall have the meanings assigned to them in the Rights Agreement.

Section 7. Governing Law. This Amendment shall be deemed to be a contract made under the laws of the State of Wisconsin and for all purposes shall be governed by and construed in accordance with the laws of such State applicable to contracts to be made and performed entirely within such State.

IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed as of the day and year above written.

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