Exhibit 4.1

EXECUTION VERSION

AMENDMENT NO. 4 TO

AMENDED AND RESTATED CREDIT AGREEMENT

This Amendment No. 4 to Amended and Restated Credit Agreement (this “Amendment”) is entered into as of October 7, 2010 by and among The Manitowoc Company, Inc., a Wisconsin corporation (the “Borrower”), the Subsidiary Borrowers signatory hereto (together with the Borrower, the “Borrowers”), JPMorgan Chase Bank, N.A., individually and as administrative agent (the “Administrative Agent”), and the other financial institutions signatory hereto.

RECITALS

A.                                   The Borrowers, the Administrative Agent and the Lenders are party to that certain Amended and Restated Credit Agreement dated as of August 25, 2008, as amended (as so amended, the “Credit Agreement”).  Unless otherwise specified herein, capitalized terms used in this Amendment shall have the meanings ascribed to them by the Credit Agreement, as amended hereby.

B.                                     The Borrowers, the Administrative Agent and the undersigned Lenders wish to amend the Credit Agreement on the terms and conditions set forth below.

Now, therefore, in consideration of the mutual execution hereof and other good and valuable consideration, the parties hereto agree as follows:

1.                                       Amendments to Credit Agreement.  Upon the “Effective Date” (as defined below), the Credit Agreement shall be amended as follows:

(a)                                  The defined term “Senior Note Documents” in Section 1.01 of the Credit Agreement is hereby deleted and replaced with the following:

“Senior Note Documents” means the Original Senior Note Documents, the Additional Senior Note Documents, the Second Additional Senior Note Documents, and all other documents executed and delivered with respect any Indebtedness of the Borrower and its Subsidiaries (as applicable) incurred pursuant to Section 6.01(p) and/or 6.01(q) of this Agreement subsequent to the Amendment No. 4 Effective Date.

(b)                                 The defined term “Senior Notes” in Section 1.01 of the Credit Agreement is hereby deleted and replaced with the following:

“Senior Notes” means the Original Senior Notes, the Additional Senior Notes, the Second Additional Senior Notes and any other notes issued pursuant to the Senior Note Documents.

(c)                                  Section 1.01 of the Credit Agreement is amended by adding the following definitions in appropriate alphabetical order:

“Amendment No. 4” means that certain Amendment No. 4 to Credit Agreement dated as of October 7, 2010 by and among the Borrower, the Administrative Agent and the Lenders party thereto.

“Amendment No. 4 Effective Date” means the “Effective Date” as defined in Amendment No. 4.

“Second Additional Senior Note Documents” means the Second Additional Senior Note Indenture and all other documents executed and delivered with respect to the Second Additional Senior Notes or Second Additional Senior Note Indenture as in effect on the Amendment No. 4 Effective Date and as the same may be amended, restated, amended and restated, modified or supplemented from time to time in accordance with the terms hereof and thereof.

“Second Additional Senior Note Indenture” means the Indenture to be dated on or about the Amendment No. 4 Effective Date, among the Borrower and the other parties thereto, as in effect on the Amendment No. 4 Effective Date and as the same may be amended, restated, amended and restated, modified or supplemented from time to time in accordance with the terms hereof and thereof.

“Second Additional Senior Notes” means the Borrower’s Senior Notes issued pursuant to the Second Additional Senior Note Indenture, as in effect on the Amendment No. 4 Effective Date and as the same may be amended, modified or supplemented from time to time in accordance with the terms hereof and thereof.

(d)                                 The last sentence of Section 1.05(b) of the Credit Agreement is hereby amended by deleting the words “or 6.08” therefrom.

(e)                                  Sub-clause (ii) of Section 5.01(c) of the Credit Agreement is hereby deleted and replaced with the following:

(ii) setting forth reasonably detailed calculations (x)(1) of the amount of “Permitted Indebtedness” (as described in part (2) of the definition thereof in the Original Senior Note Indenture) then outstanding and then permitted to be incurred by the terms of the Original Senior Note Indenture, (2) of the amount of “Permitted Indebtedness” (as described in part (2) of the definition thereof in the Additional Senior Note Indenture) then outstanding and then permitted to be incurred by the terms of the Additional Senior Note Indenture, (3) of the amount of “Permitted Indebtedness” (as described in part (2) of the definition thereof in the Second Additional Senior Note Indenture) then outstanding and then permitted to be incurred by the terms of the Second Additional Senior Note Indenture and (4) to the extent applicable, of the amount of “Permitted Indebtedness” (as defined in the applicable Senior Note Document) then outstanding and then permitted to be incurred under this Agreement pursuant to the terms of any other Senior Note Document and (y) demonstrating compliance

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with Sections 6.07, 6.15, 6.16, 6.20 and, commencing with the fiscal quarter ending December 31, 2010, 6.21

(f)                                    Section 6.05(m) of the Credit Agreement is hereby deleted and replaced with the following:

subject to the provisions of this Section 6.05(m) and the requirements contained in the definition of Permitted Acquisition, the Borrower and its Wholly-Owned Subsidiaries may from time to time effect Permitted Acquisitions, so long as: (i) no Default or Event of Default shall have occurred and be continuing at the time of the consummation of the proposed Permitted Acquisition or immediately after giving effect thereto; (ii) at any time when the Consolidated Senior Secured Leverage Ratio is greater than or equal to 3.75 to 1.00 (both immediately before and immediately after giving effect to such investment) the aggregate amount of consideration for any investment made pursuant to this Section 6.05(m), when added to the aggregate amount of such consideration for all other investments made pursuant to this Section 6.05(m) in the same calendar year as the calendar year in which such investment occurs shall not exceed (x) $10,000,000 of cash consideration and (y) $100,000,000 of non-cash consideration, (iii) at any time when the Consolidated Senior Secured Leverage Ratio is less than 3.75 to 1.00 but greater than or equal to 3.00 to 1.00 (both immediately before and immediately after giving effect to such investment) the aggregate amount of consideration for any investment made pursuant to this Section 6.05(m), when added to the aggregate amount of such consideration for all other investments made pursuant to this Section 6.05(m) in the same calendar year as the calendar year in which such investment occurs shall not exceed (x) $150,000,000 of cash consideration and (y) $250,000,000 of non-cash consideration, (iv) if the proposed Permitted Acquisition is for aggregate consideration of $75,000,000 or more, the Borrower shall have given to the Administrative Agent at least 10 Business Days’ prior written notice of such proposed Permitted Acquisition (or such shorter period of time as may be reasonably acceptable to the Administrative Agent), which notice shall be executed by its chief financial officer or treasurer and shall describe in reasonable detail the principal terms and conditions of such Permitted Acquisition; (v) both before and after giving effect to the Permitted Acquisition, the Borrower is in compliance with Section 6.01(p); (vi) at the time of any such Permitted Acquisition involving the creation or acquisition of a Subsidiary, or the acquisition of capital stock or other equity interest of any Person, the capital stock or other equity interests thereof created or acquired in connection with such Permitted Acquisition shall have been pledged for the benefit of the Secured Creditors pursuant to (and to the extent required by) the US Pledge Agreement and such Person, if a Domestic Subsidiary which is a Material Subsidiary, shall have executed and delivered to the Administrative Agent a joinder to the Subsidiary Guaranty; and (vii) giving effect to such Permitted Acquisition, (A) at all times that the Consolidated Senior Secured Leverage Ratio is greater than 3.00 to 1.00, the Consolidated Senior Secured Leverage Ratio on a Pro Forma Basis is no greater than the Consolidated Senior Secured Leverage Ratio as

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calculated immediately prior to giving effect to such Permitted Acquisition (B) the Borrower is in compliance with Section 6.07 and, commencing with the fiscal quarter ending December 31, 2010, 6.21, on a Pro Forma Basis;

(g)                                 Section 6.07 of the Credit Agreement is hereby deleted and replaced with the following:

SECTION 6.07                    Minimum Consolidated Interest Coverage Ratio.  The Borrower will not permit the Consolidated Interest Coverage Ratio for any fiscal quarter of the Borrower set forth below to be less than or equal to the ratio set forth opposite such fiscal quarter below:

(h)                                 Section 6.08 of the Credit Agreement is hereby deleted and replaced with the following:

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SECTION 6.08.  [Reserved].

(i)                                     Section 6.10 of the Credit Agreement is hereby deleted and replaced with the following:

SECTION 6.10.  Restrictive Agreements.  The Borrower will not, and will not permit any of its Subsidiaries to, directly or indirectly, enter into, incur or permit to exist any agreement or other arrangement that prohibits, restricts or imposes any condition upon (a) the ability of the Borrower or any Subsidiary to create, incur or permit to exist any Lien upon any of its property or assets, or (b) the ability of any Subsidiary to pay dividends or other distributions with respect to any shares of its capital stock or to make or repay loans or advances to the Borrower or any other Subsidiary or to Guarantee Indebtedness of the Borrower or any other Subsidiary; provided that (i) the foregoing shall not apply to restrictions and conditions imposed by law or by this Agreement or the other Credit Documents or, only until the Initial Borrowing Date, restrictions or conditions imposed by any of the “Credit Documents” (as defined in the Existing Credit Agreement), (ii) the foregoing shall not apply to restrictions and conditions existing on the Effective Date identified on Schedule 6.10 (but shall apply to any extension or renewal of, or any amendment or modification expanding the scope of, any such restriction or condition), (iii) the foregoing shall not apply to restrictions and conditions contained in the Additional Senior Note Documents as in effect on the Amendment No. 3 Effective Date (but shall apply to any extension or renewal of, or any amendment or modification expanding the scope of, any such restriction or condition) or any restrictions or conditions contained in any Senior Note Documents issued subsequent to the Amendment No. 3 Effective Date; provided that any Senior Note Documents issued subsequent to the Amendment No. 3 Effective Date pursuant to Section 6.01(q)(i) shall be on terms not materially less favorable to the Lenders, taken as a whole, than the terms of the Additional Senior Note Documents, (iv) the foregoing shall not apply to restrictions and conditions contained in the Second Additional Senior Note Documents as in effect on the Amendment No. 4 Effective Date (but shall apply to any extension or renewal of, or any amendment or modification expanding the scope of, any such restriction or condition) or any restrictions or conditions contained in any Senior Note Documents issued subsequent to the Amendment No. 4 Effective Date; provided that any Senior Note Documents issued subsequent to the Amendment No. 4 Effective Date pursuant to Section 6.01(q)(i) shall be on terms not materially less favorable to the Lenders, taken as a whole, than the terms of the Second Additional Senior Note Documents, (v) the foregoing shall not apply to customary restrictions and conditions contained in agreements relating to the sale of a Subsidiary pending such sale, provided such restrictions and conditions apply only to the Subsidiary that is to be sold and such sale is permitted hereunder, (vi) clause (a) of the foregoing shall not apply to restrictions or conditions imposed by any agreement relating to secured Indebtedness permitted by this Agreement if such restrictions or conditions apply only to the property or assets securing such Indebtedness and (vii) clause (a) of the foregoing shall not apply to customary provisions in leases and other contracts restricting the assignment thereof.

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(j)                                     Section 6.20 of the Credit Agreement is hereby deleted and replaced with the following:

SECTION 6.20  Maximum Capital Expenditures.  At all times that the Consolidated Total Leverage Ratio is greater than 3.50 to 1.00, the Borrower will not, and will not permit any of its Subsidiaries to, make Capital Expenditures during any fiscal year that exceed the amount set forth in the table below opposite the applicable fiscal year (the “Capex Limit”); provided, however, that the Capex Limit for each fiscal year referenced below (commencing with the 2010 fiscal year) will be increased, if at all, by the positive amount equal to 50% of the amount (if any), equal to the difference obtained by taking the Capex Limit in effect for the immediately preceding fiscal year (before giving effect to any increase pursuant to this provision) minus the actual amount of any Capital Expenditures expended during such preceding fiscal year (the “Carry Over Amount”).

(k)                                  Section 6.21 of the Credit Agreement is hereby deleted and replaced with the following:

SECTION 6.21  Maximum Consolidated Senior Secured Leverage Ratio.  The Borrower will cause the Consolidated Senior Secured Leverage Ratio at all times during the fiscal quarters of the Borrower set forth below to be less than the ratio set forth opposite such fiscal quarter below:

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2.                                       Representations, Warranties and Agreements of the Borrowers.  The Borrowers represent, warrant and agree that:

(a)                                  The execution, delivery and performance by the Borrowers of this Amendment have been duly authorized by all necessary corporate action and that this Amendment is a legal, valid and binding obligation of the Borrowers enforceable against the Borrowers in accordance with its terms, except as the enforcement thereof may be subject to  the effect of any applicable bankruptcy, insolvency, reorganization, moratorium or similar law affecting creditors’ rights generally;

(b)                                 Each of the representations and warranties contained in the Credit Agreement is true and correct in all material respects (except that any representation or warranty which is already qualified as to materiality or by reference to Material Adverse Effect is true and correct in all respects) on and as of the date hereof (other than representations and warranties that relate solely to an earlier date);

(c)                                  After giving effect to this Amendment, no Default has occurred and is continuing.

(d)                                 The Borrower’s receipt of the net proceeds from the issuance of the Second Additional Senior Notes shall constitute a Prepayment Event under Section 2.12(c) of the Credit Agreement, and the Borrower shall apply such net proceeds to prepay outstanding Term A Borrowings and Term B Borrowings, ratably.  Notwithstanding the 10 Business Day time period permitted by Section 2.12(c) of the Credit Agreement for the making of such prepayment, the Borrower shall use its reasonable best efforts to ensure that such prepayment is made promptly (and in any

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event shall make such payment within 2 Business Days) upon the Borrower’s receipt of the net proceeds from the issuance of the Second Additional Senior Notes.

3.                                       Effective Date.  This Amendment shall become effective upon (i) the execution and delivery hereof by the Borrowers, the Administrative Agent and the Required Lenders (without respect to whether it has been executed and delivered by all the Lenders) and (ii) the Borrower having paid to the Administrative Agent for the benefit of each Lender consenting to this Amendment an amendment fee equal to .025% of the aggregate Revolving Commitments and outstanding Term Loans of such Lender, in each case determined as of the date hereof (without giving effect to any prepayment of the Term Loans made or to be made out of the proceeds of the Second Additional Senior Notes); provided that Section 1 hereof shall not become effective until the date (the “Effective Date”) when the following additional conditions have also been satisfied:

(a)                                  Each of the Credit Parties shall have executed and delivered to the Administrative Agent a Reaffirmation of Guaranty and Collateral Documents in the form of Exhibit A hereto.

(b)                                 The Administrative Agent shall have received an executed legal opinion from Foley & Lardner LLP in form and substance satisfactory to the Administrative Agent.  The Borrower hereby requests such counsel to deliver such opinion.

(c)                                  The Borrower shall have paid (i) to the Administrative Agent for the benefit of each Lender consenting to this Amendment an amendment fee equal to .050% of the aggregate Revolving Commitments and outstanding Term Loans of such Lender, in each case determined as of the Effective Date (after giving effect to any prepayment of the Term Loans made or to be made out of the proceeds of the Second Additional Senior Notes), and (ii) to the Administrative Agent for its own account any other separately agreed fees relating hereto.

(d)                                 The Administrative Agent shall have received evidence of the Borrower’s issuance of the Second Additional Senior Notes on terms not materially less favorable to the Lenders, taken as a whole, than the terms of the Original Senior Notes in an aggregate principal amount of not less than $500,000,000.

(e)                                  The Borrowers shall have provided such other corporate and other certificates, opinions, documents, instruments and agreements as the Administrative Agent may reasonably request.

The Administrative Agent shall notify the Borrower and the Lenders promptly of the occurrence of the Effective Date and such notice shall be conclusive and binding on all parties hereto.  In the event the Effective Date has not occurred on or before the date that is ninety (90) from the initial date upon which the Required Lenders shall have consented to this Amendment, Section 1 hereof shall not become operative and shall be of no force or effect.

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4.                                       Reference to and Effect Upon the Credit Agreement.

(a)                                  Except as specifically amended or waived above, the Credit Agreement and the other Credit Documents shall remain in full force and effect and are hereby ratified and confirmed in all respects.

(b)                                 The execution, delivery and effectiveness of this Amendment shall not operate as a waiver of any right, power or remedy of the Administrative Agent, the Collateral Agent or any Lender under the Credit Agreement or any other Credit Document, nor constitute a waiver of any provision of the Credit Agreement or any other Credit Document, except as specifically set forth herein.  Upon the effectiveness of this Amendment, each reference in the Credit Agreement to “this Agreement”, “hereunder”, “hereof”, “herein” or words of similar import shall mean and be a reference to the Credit Agreement as amended hereby.

(c)                                  This Amendment shall be deemed to be a Credit Document for all purposes of the Credit Documents.

5.                                       Costs and Expenses.  The Borrower hereby affirms its obligations under Section 9.03 of the Credit Agreement to reimburse the Administrative Agent for all reasonable out-of-pocket expenses incurred by the Administrative Agent in connection with the preparation, negotiation, execution and delivery of this Amendment, including but not limited to the reasonable fees, charges and disbursements of attorneys for the Administrative Agent with respect thereto.

6.                                       Governing Law.  This Agreement shall be construed in accordance with and governed by the law (without regard to conflict of law provisions) of the State of New York.

7.                                       Headings.  Section headings in this Amendment are included herein for convenience of reference only and shall not constitute a part of this Amendment for any other purposes.

8.                                       Counterparts.  This Amendment may be executed in any number of counterparts, each of which when so executed shall be deemed an original but all such counterparts shall constitute one and the same instrument.

[SIGNATURE PAGES FOLLOW]

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EXECUTION VERSION

IN WITNESS WHEREOF, the parties have executed this Amendment as of the date and year first above written.

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