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                                                                    EXHIBIT 10.4

                          FIRST AMENDMENT AND WAIVER TO
                           REVOLVING CREDIT AGREEMENT

         THIS FIRST AMENDMENT AND WAIVER TO REVOLVING CREDIT AGREEMENT, dated as
of February 4, 2004 (this "Amendment"), by and among JLG INDUSTRIES, INC., a
Pennsylvania corporation (the "Borrower"), the several banks and other financial
institutions and lenders from time to time party hereto (the "Lenders"),
SUNTRUST BANK, in its capacity as administrative agent for the Lenders (the
"Administrative Agent"), as issuing bank (the "Issuing Bank") and as swingline
lender (the "Swingline Lender"), MANUFACTURERS AND TRADERS TRUST COMPANY, as
syndication agent (the "Syndication Agent") and STANDARD FEDERAL BANK NA, as
documentation agent (the "Documentation Agent").

                                   WITNESSETH:

         WHEREAS, Borrower, Lenders, Administrative Agent, Issuing Bank,
Swingline Lender, Syndication Agent and Documentation Agent are parties to that
certain Revolving Credit Agreement, dated as of September 23, 2003 (as amended,
restated, supplemented or otherwise modified from time to time, the "Credit
Agreement");

         WHEREAS, Borrower has requested that Administrative Agent and Lenders
agree to amend the Credit Agreement in the manner set forth below, and the
Administrative Agent and Lenders are willing to do so on the terms and
conditions set forth herein;

         NOW, THEREFORE, in consideration of the mutual promises and conditions
contained herein, and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto, intending to
be legally bound, hereby agree as follows:

         1.       Definitions. Capitalized terms used but not otherwise defined
herein shall have the meanings given to such terms in the Credit Agreement.

         2.       Amendments.

                  (a) Section 1.1 of the Credit Agreement is hereby amended by
(i) replacing the definitions of "Monetization Transaction" and "MOSA" in their
entirety with the following definitions and (ii) adding the following definition
of "2004 Equity Offering", "Limited Recourse Financing Documents" and "Limited
Recourse Financing Transaction" (each in appropriate alphabetical order):

                           "2004 Equity Offering" shall mean the offering of the
                  Borrower's common stock in an underwritten registered public
                  offering consummated after February 6, 2004 and on or before
                  April 30, 2004, by Borrower.

                           "Limited Recourse Financing Documents" shall mean (i)
                  that certain Program Agreement, dated as of September 18,
                  2003, by and between Borrower and General Electric Capital
                  Corporation (the "GECC Financing Agreement"), (ii) that
                  certain Program Agreement in

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                  substantially the form provided by Borrower to the
                  Administrative Agent, to be entered into by and between JLG
                  Europe B.V. and GE European Equipment Finance Limited, and
                  (iii) any other agreements entered into from time to time
                  between Borrower and/or any of its Subsidiaries and third
                  party financing providers evidencing financing programs
                  sponsored by Borrower for the benefit of its customers, which
                  agreements shall be in form and substance reasonably
                  satisfactory to the Administrative Agent.

                           "Limited Recourse Financing Transaction" shall mean
                  any transaction or a series of transactions entered into by
                  the Borrower or a Subsidiary pursuant to the Limited Recourse
                  Financing Documents.

                           "Monetization Transaction" shall mean (i) any
                  transaction or series of transactions pursuant to which the
                  Borrower or any of its Subsidiaries sells, conveys, assigns,
                  pledges or otherwise transfers for value any Monetization
                  Assets to any Monetization Subsidiary or to any other Person
                  that is not an Affiliate of the Borrower, or creates a Lien in
                  Monetization Assets in favor of any Monetization Subsidiary or
                  any other Person that is not an Affiliate of the Borrower to
                  secure Indebtedness incurred in connection with such
                  Monetization Transaction and (ii) any Limited Recourse
                  Financing Transaction.

                           "MOSA" shall mean a mandate-of-sale agreement,
                  remarketing agreement, cooperation agreement, deed of
                  undertaking, guaranty or similar agreement or instrument
                  entered into by the Borrower or any of its Subsidiaries as a
                  credit enhancement of financing obtained by customers of the
                  Borrower or any of its Subsidiaries to finance the acquisition
                  by such customers of equipment manufactured by the Borrower or
                  any of its Subsidiaries; provided, that "MOSA" shall not
                  include any Limited Recourse Financing Transaction.

                           "OmniQuip Note" shall have the meaning assigned to
                  such term in Section 7.5.

                  (b) Section 1.1 of the Credit Agreement is hereby further
amended by deleting the period at the end of the definition of "Consolidated
Total Debt" and adding the following proviso:

                           ; provided further, however, that for purposes of
                  calculating Consolidated Total Debt as of any date (i) the
                  amount of Indebtedness attributable to any MOSA shall not
                  exceed the non-contingent obligations of the Borrower and its
                  Consolidated Subsidiaries in respect of such MOSA, and (ii)
                  the amount of Indebtedness attributable to any Monetization
                  Transaction shall not exceed the Maximum Loss Exposure in
                  respect of such Monetization Transaction.

                  (c) Section 7.5 of the Credit Agreement is hereby amended by
replacing such Section in its entirety with the following:

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                           SECTION 7.5 RESTRICTED PAYMENTS. The Borrower will
                  not, and will not permit its Subsidiaries (other than
                  Monetization Subsidiaries) to, declare or make, or agree to
                  pay or make, directly or indirectly, any dividend on any class
                  of its Capital Stock, or make any payment on account of, or
                  set apart assets for a sinking or other analogous fund for,
                  the purchase, redemption, retirement, defeasance or other
                  acquisition of, any shares of its Capital Stock or
                  Indebtedness subordinated to the Obligations of the Borrower
                  or any Guarantee thereof or any options, warrants, or other
                  rights to purchase such Capital Stock or such Indebtedness,
                  whether now or hereafter outstanding (each, a "Restricted
                  Payment"), except for (a) dividends payable by the Borrower
                  solely in shares of any class of its common stock, (b)
                  Restricted Payments made by any Subsidiary Loan Party to the
                  Borrower or to another Subsidiary Loan Party, (c) in the
                  absence of a Default or an Event of Default, the payment of
                  regular cash dividends in accordance with reasonable business
                  practice in the good faith judgment of the board of directors
                  of the Borrower, (d) distributions of Capital Stock (subject
                  to compliance with the last paragraph of Section 7.1) upon the
                  exercise of the "Rights" as defined in the Rights Agreement,
                  dated as of May 24, 2000, between the Borrower and American
                  Stock Transfer and Trust Company, as it may be amended,
                  supplemented or otherwise modified from time to time, (e) no
                  later than April 30, 2004, the repurchase or repayment in full
                  of that certain unsecured subordinated promissory note, dated
                  August 1, 2003, executed by JLG Acquisition Company, as
                  predecessor in interest to JLG OmniQuip, Inc. in favor of TRAK
                  International, Inc. and in the original principal amount of
                  $10,000,000 (the "OmniQuip Note"), (f) the repurchase of up to
                  $35,000,000 of the Senior Subordinated Notes, and (g) the
                  repurchase or redemption of Senior Subordinated Notes and the
                  Senior Unsecured Notes for an aggregate repurchase or
                  redemption price not to exceed $100,000,000, provided, that
                  such repurchase or redemption occurs on or prior to December
                  31, 2004, and is made solely with the proceeds of the 2004
                  Equity Offering; provided that in the case of any repuchase or
                  redemption in clauses (f) or (g) above, (i) immediately after
                  giving pro forma effect to any such repurchase or redemption
                  as though the repurchase or redemption had closed on the last
                  Business Day of the Fiscal Month immediately preceding
                  delivery of the most recently delivered Borrowing Base
                  Certificate pursuant to Section 5.1(f), the Borrowing
                  Availability would be at least $10,000,000, (ii) immediately
                  after giving effect to the repurchase or redemption, no
                  Default or Event of Default shall otherwise have occurred and
                  be continuing and (iii) immediately after giving pro forma
                  effect to any such repurchase or redemption as though the
                  repurchase or redemption had closed on the first day of the
                  most recently ended four consecutive Fiscal Quarter period for
                  which financial statements have been delivered pursuant to
                  Section 5.1 (a) or (b), the Borrower would be in compliance
                  with the financial covenants

                                       3

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                  provided for in Article VI as of the most recent Fiscal
                  Quarter in respect of which the Borrower is required to have
                  delivered a Compliance Certificate pursuant to Section 5.1(c).

         3.       Waiver. The Lenders hereby waive the requirement of Section
2.12(c) of the Credit Agreement requiring the Borrower to prepay the Loans in an
amount equal to fifty (50%) of the Net Cash Proceeds received by the Borrower in
connection with the 2004 Equity Offering; provided, that the Net Cash Proceeds
of such issuance are used (i) to repurchase or repay the OmniQuip Note (to the
extent such OmniQuip Note has not been repaid prior to the 2004 Equity
Offering), (ii) to repurchase or redeem the Senior Subordinated Notes and the
Senior Unsecured Notes, and (iii) for working capital needs and for other
general corporate purposes of the Borrower and its Subsidiaries.

         4.       Conditions to Effectiveness of Amendment. This Amendment shall
not become effective until each of the following conditions precedent have been
satisfied in full:

                  (a)      Administrative Agent shall have received a duly
         executed counterpart of this Amendment executed by the Borrower and the
         Required Lenders;

                  (b)      Administrative Agent shall have received duly
         executed counterparts of the Reaffirmation of Guaranty in the form
         attached hereto, executed by each Subsidiary Loan Party; and

                  (c)      Administrative Agent shall have received the
         reasonable costs and expenses incurred in connection with this
         Amendment, including without limitation the reasonable fees and
         out-of-pocket expenses of counsel to the Administrative Agent.

         5.       Representations and Warranties. The Borrower hereby represents
and warrants to the Administrative Agent and Lenders that:

                  (a)      the execution, delivery and performance by Borrower
         of this Amendment (i) are within Borrower's organizational power, (ii)
         have been duly authorized by all necessary organizational, and if
         required, stockholder action, (iii) do not require any consent or
         approval of, or registration or filing with, or any action by, any
         Governmental Authority, except those as have been obtained or made and
         are in full force and effect, (iv) do not violate any applicable law,
         rule or regulation, or the charter, bylaws or other organizational
         documents of the Borrower or any of its Subsidiaries or any judgment,
         order or ruling of any Governmental Authority, (v) will not violate or
         result in a default under any indenture, agreement or other instrument
         binding on the Borrower or any of its Subsidiaries or any of its assets
         or give rise to a right thereunder to require any payment to be made by
         the Borrower or any of its Subsidiaries, in each case where the failure
         to do so, individually or in the aggregate, could not reasonably be
         expected to have a Material Adverse Effect and (vi) will not result in
         the creation or imposition of any Lien on any asset of the Borrower or
         any of its Subsidiaries.

                                       4

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                  (b)      this Amendment has been duly executed and delivered
         by the Borrower and constitutes the valid and binding obligation of the
         Borrower, enforceable against it in accordance with its terms, except
         as may be limited by applicable bankruptcy, insolvency, reorganization,
         moratorium or similar laws affecting the enforcement of creditors'
         rights generally and by general principles of equity; and

                  (c)      after giving effect to this Amendment, all of the
         representations and warranties set forth in Article IV of the Credit
         Agreement are true and correct in all material respects, or if such
         representations and warranties relate solely to an earlier date, were
         true and correct as of such earlier date, and no Default or Event of
         Default has occurred and is continuing as of the date hereof.

         6.       Survival. Except as expressly provided herein, the Credit
Agreement shall continue in full force and effect, and the unamended terms and
conditions of the Credit Agreement are expressly incorporated herein and
ratified and confirmed in all respects. This Amendment is not intended to be or
to create, nor shall it be construed as, a novation or an accord and
satisfaction.

         7.       Effect of Amendment. From and after the date hereof,
references to the Credit Agreement shall be references to the Credit Agreement
as amended hereby.

         8.       Entire Understanding. This Amendment constitutes the entire
agreement between the parties hereto with respect to the subject matter hereof.
Neither this Amendment nor any provision hereof may be changed, waived,
discharged, modified or terminated orally, but only by an instrument in writing
signed by the parties required to be a party thereto pursuant to Section 10.2 of
the Credit Agreement.

         9.       GOVERNING LAW. THIS AMENDMENT SHALL BE CONSTRUED IN ACCORDANCE
WITH AND BE GOVERNED BY THE LAW (WITHOUT GIVING EFFECT TO THE CONFLICT OF LAW
PRINCIPLES THEREOF) OF THE STATE OF NEW YORK.

         10.      Counterparts. This Amendment may be executed by one or more
parties to this Amendment on any number of separate counterparts (including by
telecopy), and all of said counterparts taken together shall be deemed to
constitute one and the same instrument.

                       [SIGNATURES TO FOLLOW ON NEXT PAGE]

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         IN WITNESS WHEREOF, the parties have caused this Amendment to be duly
executed as of the date first above written.

                                   JLG INDUSTRIES, INC., as Borrower

                                   By /s/ Thomas D. Singer
                                      ---------------------------------
                                   Name: Thomas D. Singer
                                   Title: Senior Vice President, General Counsel

             [SIGNATURE PAGE TO FIRST AMENDMENT TO CREDIT AGREEMENT]

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                                   SUNTRUST BANK
                                   AS ADMINISTRATIVE AGENT, AS ISSUING BANK, AS
                                   SWINGLINE LENDER AND AS A LENDER

                                   By /s/ Stephen Derby
                                      ---------------------------------
                                   Name:  Stephen Derby
                                   Title: Director

             [SIGNATURE PAGE TO FIRST AMENDMENT TO CREDIT AGREEMENT]

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                                   MANUFACTURERS AND TRADERS TRUST
                                   COMPANY, AS SYNDICATION AGENT AND AS A
                                   LENDER

                                   By /s/ Kellie M. Matthews
                                      ---------------------------------
                                   Name: Kellie M. Matthews
                                   Title: Administrative Vice President

             [SIGNATURE PAGE TO FIRST AMENDMENT TO CREDIT AGREEMENT]

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                                   STANDARD FEDERAL BANK NA,
                                   AS DOCUMENTATION AGENT AND AS A LENDER

                                   By /s/ Mark Ossman
                                      ---------------------------------
                                   Name: Mark Ossman
                                   Title: ASSISTANT VICE PRESIDENT

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                                   SIEMENS FINANCIAL SERVICES, INC.,
                                   AS A LENDER

                                   By /s/ Frank Amodio
                                      ---------------------------------
                                   Name:  Frank Amodio
                                   Title: Vice President - Credit

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                                   CITIZENS BANK OF PENNSYLVANIA,
                                   AS A LENDER

                                   By /s/ Joseph N. Butto
                                      ---------------------------------
                                   Name: Joseph N. Butto
                                   Title: Vice President

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                                   HARRIS TRUST & SAVINGS BANK,
                                   AS A LENDER

                                   By /s/ David L. Mistic
                                      ---------------------------------
                                   Name: David L. Mistic
                                   Title: Vice President

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                                   NATIONAL CITY BANK OF
                                   PENNSYLVANIA, AS A LENDER

                                   By /s/ Debra W. Riefner
                                      ---------------------------------
                                   Name: Debra W. Riefner
                                   Title: Vice President

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                                   THE CIT GROUP/BUSINESS CREDIT, INC.,
                                   AS A LENDER

                                   By /s/ Michael Fox
                                      ---------------------------------
                                   Name: Michael Fox
                                   Title: Vice-President

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                                   CREDIT SUISSE FIRST BOSTON,
                                   ACTING THROUGH ITS CAYMAN ISLANDS BRANCH

                                   By /s/ William O'Daly
                                      ---------------------------------
                                   William O'Daly
                                   Director

                                   By /s/ Jay Chall
                                      ---------------------------------
                                   Jay Chall
                                   Director

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                                   ORIX FINANCIAL SERVICES, INC,
                                   AS A LENDER

                                   By _________________________________
                                   Name:
                                   Title:

<PAGE>

                            REAFFIRMATION OF GUARANTY

         Each of the undersigned, being a Subsidiary Loan Party and a guarantor
of the Obligations of JLG Industries, Inc. ("Borrower") to the Lenders (as
defined below) under that certain Revolving Credit Agreement, dated as of
September 23, 2003, as amended by that certain First Amendment to Revolving
Credit Agreement, dated as of the date hereof (as amended, restated,
supplemented, or otherwise modified from time to time, the "Credit Agreement";
capitalized terms used herein but not defined herein shall have the respective
meanings assigned to such term in the Credit Agreement) by and among the
Borrower, the several banks and other financial institutions and lenders from
time to time party hereto (the "Lenders"), SUNTRUST BANK, in its capacity as
administrative agent for the Lenders (the "Administrative Agent"), as issuing
bank (the "Issuing Bank") and as swingline lender (the "Swingline Lender"),
MANUFACTURERS AND TRADERS TRUST COMPANY, as syndication agent (the "Syndication
Agent") and STANDARD FEDERAL BANK NA, as documentation agent (the "Documentation
Agent") hereby (a) acknowledges its receipt of a copy of the within and
foregoing First Amendment and Waiver to Revolving Credit Agreement
("Amendment"), (b) consents thereto and agrees to be bound thereby and (c)
agrees that its guaranty of the Obligations of Borrower to the Lenders shall
continue in full force and effect from and after the execution and delivery by
Borrower and the Lenders of the Amendment, without diminution or impairment.

         IN WITNESS WHEREOF, each of the undersigned has caused this
acknowledgment to be executed under seal by their respective officers thereunto
duly authorized, as of February 4, 2004.

                                   EACH OF THE SUBSIDIARIES LISTED
                                   ON SCHEDULE I HERETO

                                   By: ________________________________
                                   Name:
                                   Title:

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                                   SCHEDULE I

IN WITNESS WHEREOF, each of the undersigned has caused this acknowledgment to be
executed under seal by their respective officers thereunto duly authorized,

                                   GRADALL INDUSTRIES, INC.

                                   By: /s/ Thomas D. Singer
                                       --------------------------------
                                       Name: Thomas D. Singer
                                       Title: Vice President

                                   FULTON INTERNATIONAL INC.

                                   By: /s/ Thomas D. Singer
                                       --------------------------------
                                       Name: Thomas D. Singer
                                       Title: Vice President

                                   ACCESS FINANCIAL SOLUTIONS, INC.

                                   By: /s/ Thomas D. Singer
                                       --------------------------------
                                       Name: Thomas D. Singer
                                       Title: Vice President

                                   JLG OMNIQUIP, INC.

                                   By: /s/ Thomas D. Singer
                                       --------------------------------
                                       Name: Thomas D. Singer
                                       Title: Vice President

                                   JLG EQUIPMENT SERVICES, INC.

                                   By: /s/ Thomas D. Singer
                                       --------------------------------
                                       Name: Thomas D. Singer
                                       Title: Vice President

                                   JLG INTERNATIONAL LLC

                                   BY: JLG Industries, Inc. (its sole member)

                                   By: /s/ Thomas D. Singer
                                       --------------------------------
                                       Name: Thomas D. Singer
                                       Title: Senior Vice President, General
                                       Counsel & Secretary

<PAGE>

                                   THE GRADALL COMPANY

                                   By: /s/ Thomas D. Singer
                                       --------------------------------
                                       Name: Thomas D. Singer
                                       Title: Vice President<PAGE>

                                                                 Exhibit 10.12.3

                            FOURTH AMENDMENT TO LEASE

         THIS AMENDMENT, made and entered into this 15th day of December, 2003,
by and between PARK SPE, LLC, herinafter called "Lessor," and CXT INCORPORATED,
a Delaware corporation hereinafter called "Lessee."

                                    RECITALS

         WHEREAS, on April 1, 1993, the Lessor and Lessee entered into an
agreement of Lease covering those certain premises described as Spokane County
Altered Binding Site Plan No. 87-17, Spokane County Binding Site Plan No. 88-21,
and Spokane County Binding Site Plan No. 88-22, containing approximately
8,619,217 gross square feet (Building S-16), located at 3808 North Sullivan
Road, situated in the County of Spokane, the State of Washington.

         WHEREAS, on March 28, 1996 the Lessor and Lessee entered into a First
Amendment to Lease covering those certain premises whereby expanding its
Premises to include 2.765 acres of Parcel A (located East of Tract A) and
increasing the monthly Base Rent and Common Area Expenses.

         WHEREAS, on June 30, 1999 the Lessor and Lessee entered into an
Amendment to Lease covering those certain premises whereby Lessee entered into
an transaction wherein its stockholders sold all of their stock to L.B. Foster
Company, which sales constituted a transfer of the Lessee's interest in the
Lease requiring Lessor's consent. The Lease and all addendums and amendments
thereto are hereinafter collectively referred to as the "Lease."

         WHEREAS, on November 7, 2002 the Lessor and Lessee entered into a Third
Amendment to Lease covering those certain premises whereby extending the Term of
the Lease for an additional year effective January 1, 2003.

         WHEREAS, the Lessee now desires to extend the Term of Lease for an
additional seven (7) month period effective January 1, 2004.

         NOW, THEREFORE, in consideration of the Premises and agreements herein
contained, it is hereby agreed as follows:

Article 1.3. Project, shall be amended as follows:

         The Premises shall be described as approximately 56,000 square feet in
Building #S-16 and approximately 12/15 acres of land (Tract A) of Binding Site
Plan 87-17 and Binding Site Plan 88-21, records of Spokane County, Washington.

Article 3. Term, shall be amended as follows:

<PAGE>

         The Term of the Lease shall be extended for an additional seven (7)
month period effective January 1, 2004 and shall end on July 31, 2004.

         If prior to the end of the Term, Lessee is able to negotiate a contract
         for a duration of not less than two (2) years involving product
         manufactured in the Premises, Lessor and Lessee agree to negotiate in
         good faith a new lease for the Premises which upon mutual execution
         will replace the Lease and any amendments thereto.

Article 4. Base Rent, Paragraph 4.1, shall be amended as follows:

<TABLE>
<S>                                            <C>
January 1, 2004 through July 31, 2004          $24,041.00 per month
</TABLE>

Section 37. Subordination, shall be amended as follows:

         Without the necessity of any additional document being executed by
         Lessee for the purpose of effecting a subordination, and at the
         election of Lessor or any mortgagee with a lien on the Premises, this
         Lease will be subject and subordinate at all times to the lien of any
         mortgage or deed of trust which may now exist or hereafter be executed
         in any amount for which the Premises, the building containing the
         Premises or the development or the project of which the Premises is a
         part, or Lessor's interest or estate in any of said items is specified
         as security. Lessee will execute and deliver within five (5) days of
         notice form Lessor at Lessor's expense instruments subordinating this
         Lease to any such mortgage or evidencing such subordination. Provided,
         however, Lessor shall provide to Lessee an agreement in writing from
         any such mortgagee to the effect that so long as Lessee shall
         faithfully discharge its obligations under this Lease, its tenancy will
         not be disturbed nor this Lease affected by any default such as
         mortgage, and that in the event of a sale of the Premises in
         foreclosure or any sale, transfer or conveyance in lieu thereof, that
         same will be sold, transferred or conveyed subject to this Lease.

         EXCEPT for the new terms and conditions listed above, all other terms
and conditions of the Lease and any subsequent amendment(s) shall remain in full
force and effect.

         In WITNESS WHEROF, the said Lessor and Lessee have executed this
amendment to lease the day and year first written above.

LESSOR:                                             LESSEE:
PARK SPE, LLC                                       CXT INCORPORATED,
                                                    a Delaware corporation

/s/Rob B. Gragg                                     /s/Dave Millard 1/2/04
----------------------------                        ---------------------------
Rob B. Gragg, Authorized Representative             Dave Millard, Vice President

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