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                                                                  Exhibit(4)(G)

                           FOURTH AMENDMENT AGREEMENT

         This Fourth Amendment Agreement made as of the 31st day of December,
1996, by and among PARK-OHIO INDUSTRIES, INC., an Ohio corporation ("Borrower"),
KEYBANK NATIONAL ASSOCIATION, formerly known as Society National Bank, as Agent
("Agent") and the banks signing on the signature pages hereof (the "Banks"):

         WHEREAS, Borrower, Agent and the Banks are parties to a certain credit
agreement dated April 11, 1995, as amended, and as it may from time to time be
further amended, restated or otherwise modified, which provides, among other
things, for a revolving credit and a term loan aggregating One Hundred Twenty
Five Million Dollars, all upon certain terms and conditions (the "Credit
Agreement");

         WHEREAS, Borrower, Agent and the Banks desire to amend the Credit
Agreement by eliminating the Letter of Credit facility and modifying certain
provisions thereof;

         WHEREAS, each term used herein shall be defined in accordance with the
Credit Agreement;

         NOW, THEREFORE, in consideration of the premises and of the mutual
covenants herein and for other valuable considerations, Borrower, Agent and the
Banks agree as follows:

         1. Article I of the Credit Agreement is hereby amended to delete the
definitions of "Guarantor of Payment" and "Revolving Credit Commitment"
therefrom and to insert the following in place thereof:

                  "Guarantor of Payment" means any one of Castle Rubber Company,
         Kay Home Products, Inc., General Aluminum Mfg. Company, Blue Falcon
         Investments, Inc., RB&W Corporation, Blue Falcon Forge, Inc., Tocco,
         Inc., The Ajax Manufacturing Company, Cicero Flexible Products, Inc.
         (fka Blue Utica, Inc.) and SummerSpace, Inc., or any other party which
         shall deliver a Guaranty of Payment to the Agent subsequent to the
         Closing Date.

                  "Revolving Credit Commitment" shall mean the obligation
         hereunder of each Bank, during the Commitment Period, to make Revolving
         Loans up to the aggregate amount set forth opposite such Bank's name
         under the column headed "Revolving Credit Commitment Amount" as listed
         in Annex 1 hereof (or such lesser amount as shall be determined
         pursuant to Section 2.5 hereof).

         2. Article I of the Credit Agreement is hereby amended to delete the
definition of "Letter of Credit" therefrom.


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         3. Article I of the Credit Agreement is hereby amended to add the
following new definitions thereto:

                  "Loan" or "Loans" shall mean the credit granted to Borrower by
         the Banks in accordance with Section 2.1A or B hereof.

                  "Revolving Loan" shall mean a Loan granted to Borrower by the
         Banks in accordance with Section 2.1A hereof.

                  "Term Loan" shall mean the Loan granted to Borrower by the
         Banks in accordance with Section 2.1B hereof.

                  "Total Commitment Amount" shall mean the obligation hereunder
         of the Banks, during the Commitment Period, to make Loans up to the
         maximum aggregate principal amount set forth as the "Total Commitment
         Amount" on Annex 1 hereof (or such lesser amount as shall be determined
         pursuant to Section 2.5 hereof).

         4. Section 2.1 of the Credit Agreement is hereby deleted in its
entirety with the following to be inserted in place thereof:

                  SECTION 2.1. AMOUNT AND NATURE OF CREDIT. Subject to the terms
         and provisions of this credit agreement, each Bank will participate to
         the extent hereinafter provided in making Loans to Borrower in such
         aggregate amount as Borrower shall request pursuant to the Revolving
         Credit Commitment and the Term Loan Commitment; provided, however, that
         in no event shall the aggregate principal amount of all Loans
         outstanding under this credit agreement during the Commitment Period
         exceed the Total Commitment Amount.

                  Each Bank, for itself and not one for any other, agrees to
         participate in borrowings made hereunder on such basis that (a)
         immediately after the completion of any borrowing by Borrower
         hereunder, the aggregate principal amount then outstanding on Notes
         issued to such Bank shall not be in excess of the amount shown opposite
         the name of such Bank under the column headed "Maximum Amount" as set
         forth in Annex 1 hereto for the Commitment Period, and (b) such
         aggregate principal amount outstanding on Notes issued to such Bank
         shall represent that percentage of the aggregate principal amount then
         outstanding on all Notes (including the Notes held by such Bank) which
         is shown opposite the name of such Bank under the column headed
         "Percentage" in Annex 1 hereto.

                  Each borrowing from, and reduction of Commitments of, the
         Banks hereunder shall be made pro rata according to their respective
         Commitments. The Loans may be made as Revolving Loans and as a Term
         Loan as follows:

                  A. Revolving Loans. Subject to the terms and conditions of
         this credit agreement, during the Commitment Period, the Banks shall
         make a Loan or Loans to Borrower in such amount or amounts as Borrower
         may from time to time request, but not exceeding in aggregate principal
         amount at any one time outstanding hereunder the Revolving Credit
         Commitment. Borrower shall have the option, subject to the terms and
         conditions set forth herein, to borrow hereunder up to the amount of
         the Revolving Credit Commitment

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         by means of any combination of (a) Prime Rate Loans maturing on the
         last day of the Commitment Period, bearing interest at a rate per annum
         which shall be the Adjusted Prime Rate from time to time in effect and
         drawn down in aggregate amounts of not less than Five Hundred Thousand
         Dollars ($500,000) or any multiple thereof, or (b) LIBOR Loans maturing
         on the last day of the Commitment Period, drawn down in aggregate
         amounts of not less than One Million Dollars ($1,000,000) or any
         multiple thereof, bearing interest at a rate per annum which shall be
         the Derived LIBOR Rate, fixed in advance of each Interest Period as
         herein provided for each such Interest Period. Interest hereunder shall
         be based on a year having 360 days, and calculated for the actual
         number of days elapsed.

                  Borrower shall pay interest on the unpaid principal amount of
         Prime Rate Loans outstanding from time to time from the date thereof
         until paid, on the last day of each succeeding June, September,
         December and March of each year and at the maturity thereof, commencing
         June 30, 1995. Borrower shall pay interest at a fixed rate for each
         Interest Period on the unpaid principal amount of LIBOR Loans
         outstanding from time to time from the date thereof until paid, payable
         on each Interest Adjustment Date with respect to an Interest Period
         (provided that if an Interest Period exceed three months, the interest
         must be paid every three months, commencing three (3) months from the
         beginning of such Interest Period).

                  At the request of Borrower, provided no Event of Default
         exists hereunder, the Banks shall convert Prime Rate Loans to LIBOR
         Loans at any time and shall convert LIBOR Loans to Prime Rate Loans on
         any Interest Adjustment Date, but each request for loans under this
         Paragraph A must either be for Prime Rate Loans or LIBOR Loans.

                  The obligation of Borrower to repay the Prime Rate Loans and
         the LIBOR Loans made by each Bank and to pay interest thereon shall be
         evidenced by a Revolving Credit Note of Borrower substantially in the
         form of Exhibit A hereto, with appropriate insertions, dated the date
         of this credit agreement and payable to the order of such Bank on the
         last day of the Commitment Period in the principal amount of its
         Revolving Credit Commitment, or, if less, the aggregate unpaid
         principal amount of Revolving Loans made hereunder by such Bank. The
         principal amount of the Prime Rate Loans and the LIBOR Loans made by
         each Bank and all prepayments and payments thereof and the applicable
         dates with respect thereto shall be recorded by each Bank from time to
         time on the records of such Bank by such method as each Bank may
         generally employ; provided, however, that failure to make any such
         entry shall in no way detract from Borrower's obligations under such
         Note. The aggregate unpaid amount of Prime Rate Loans and LIBOR Loans
         set forth on the records of such Bank shall be rebuttably presumptive
         evidence of the principal amount owing and unpaid on such Revolving
         Credit Note. If an Event of Default shall occur hereunder, the
         principal of the Revolving Credit Note and the unpaid interest thereon
         shall bear interest, 




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         until paid (or until, if ever, such Event of Default may be waived in
         writing by the Banks), at a rate per annum which shall be two per cent
         (2%) in excess of the Adjusted Prime Rate from time to time in effect.
         Subject to the provisions of this credit agreement, Borrower shall be
         entitled under this Paragraph A to borrow funds, repay the same in
         whole or in part and reborrow hereunder at any time and from time to
         time during the Commitment Period.

                  B. Term Loan. Subject to the conditions of this credit
         agreement, the Banks will make a seven (7) year Term Loan to Borrower
         in such amount, if any, as Borrower may request on the Closing Date,
         but not exceeding the Term Loan Commitment of such Bank then in effect.
         To evidence the Term Loan, Borrower shall execute and deliver to each
         Bank an appropriate Term Note dated the date the Term Loan is to be
         made, and substantially in the form of Exhibit B hereto, with
         appropriate insertions. The Term Notes shall be payable in twenty-four
         (24) consecutive quarter annual installments aggregating One Million
         Two Hundred Fifty Thousand Dollars ($1,250,000) for each quarter,
         commencing June 30, 1996 and continuing on the last day of each
         succeeding September, December, March and June of each year, through
         December 31, 2001, with the balance thereof payable in full on March
         31, 2002. Borrower shall notify the Agent at the time of the request
         whether the Term Loan will be a Prime Rate Loan or a LIBOR Loan. The
         Term Loan must be either a Prime Rate Loan or a LIBOR Loan, and may not
         be a mixture of a Prime Rate Loan and a LIBOR Loan; but the Banks, at
         the request of Borrower, shall convert a Prime Rate Loan to a LIBOR
         Loan at any time and shall convert a LIBOR Loan to a Prime Rate Loan on
         any Interest Adjustment Date. Interest hereunder shall be based on a
         year having 360 days, and calculated for the actual number of days
         elapsed.

                  If the Term Loan is a Prime Rate Loan, Borrower shall pay
         interest on the unpaid principal amount thereof outstanding from time
         to time from the date thereof until paid, on the last day of each
         succeeding June, September, December, and March of each year and at the
         maturity thereof, commencing June 30, 1995, at a rate per annum which
         shall be the Adjusted Prime Rate from time to time in effect. Any
         change in such rate resulting from a change in the Adjusted Prime Rate
         shall be effective immediately from and after such change in the
         Adjusted Prime Rate. If the Term Loan is a LIBOR Loan, Borrower shall
         pay interest at a fixed rate for each Interest Period on the unpaid
         principal amount of the LIBOR Loan outstanding from time to time from
         the date thereof until paid, payable on each Interest Adjustment Date
         with respect to an Interest Period (provided that if an Interest Period
         exceeds three months, the interest must be paid every three months,
         commencing three months from the beginning of such Interest Period), at
         a rate per annum which shall be the Derived LIBOR Rate, fixed in
         advance of each Interest Period as herein provided for each such
         Interest Period.

                  The principal amount of the Prime Rate Loans and the LIBOR
         Loans made by each Bank and all prepayments and payments thereof and
         the applicable dates with respect thereto shall be recorded by such
         Bank from time to time on the records of such Bank by such method as
         each Bank may generally employ. The aggregate unpaid amount of Prime
         Rate Loans and LIBOR Loans set forth on the records of each Bank shall
         be rebuttably 

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         presumptive evidence of the principal amount owing and unpaid on each
         Term Note; provided, however, that failure to make any such entry shall
         in no way detract from Borrower's obligations under such Note. If an
         Event of Default shall occur hereunder, the principal of each Term Note
         and the unpaid interest thereon shall bear interest, until paid (or
         until, if ever, such Event of Default may be waived in writing by the
         Banks), at a rate per annum which shall be two per cent (2%) in excess
         of the Adjusted Prime Rate from time to time in effect.

         5. Section 5.21 of the Credit Agreement is hereby deleted in its
entirety with the following to be inserted in place thereof:

                  SECTION 5.21. CAPITAL EXPENDITURES. Borrower and its
         Consolidated Subsidiaries shall not invest in Capital Expenditures more
         than an aggregate amount equal to Sixteen Million Dollars ($16,000,000)
         during the 1996 fiscal year of Borrower and during each fiscal year
         thereafter.

         6. Sections 2.5, 8.1 and 8.2 of the Credit Agreement are hereby amended
to delete the references to Letter of Credit, or the obligation of the Agent of
the Banks to issue any Letter of Credit.

         7. Section 8.3 of the Credit Agreement is hereby deleted in its
entirety.

         8. The Credit Agreement is hereby amended to add a new replacement
Annex 1 in the form of Schedule I, attached hereto.

         9. Borrower hereby represents and warrants to the Agent and the Banks
that (a) Borrower has the legal power and authority to execute and deliver this
Fourth Amendment Agreement; (b) officials executing this Fourth Amendment
Agreement have been duly authorized to execute and deliver the same and bind
Borrower with respect to the provisions hereof; (c) the execution and delivery
hereof by Borrower and the performance and observance by Borrower of the
provisions hereof do not violate or conflict with the organizational agreements
of Borrower or any law applicable to Borrower or result in a breach of any
provision of or constitute a default under any other agreement, instrument or
document binding upon or enforceable against Borrower; (d) no Possible Default
or Event of Default exists under the Credit Agreement, nor will any occur
immediately after the execution and delivery of the Fourth Amendment Agreement
or by the performance or observance of any provision hereof; (e) neither
Borrower nor any Subsidiary has any claim or offset against, or defense or
counterclaim to, any of Borrower's or any Subsidiary's obligations or
liabilities under the Credit Agreement or any Related Writing, and Borrower and
each Subsidiary hereby waives and releases the Agent and each of the Banks from
any and all such 






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claims, offsets, defenses and counterclaims of which Borrower and any Subsidiary
is aware, such waiver and release being with full knowledge and understanding of
the circumstances and effect thereof and after having consulted legal counsel
with respect thereto, and (f) this Fourth Amendment Agreement constitutes a
valid and binding obligation of Borrower in every respect, enforceable in
accordance with its terms.

         10. Each reference that is made in the Credit Agreement or any other
writing shall hereafter be construed as a reference to the Credit Agreement as
amended hereby. Except as herein otherwise specifically provided, all provisions
of the Credit Agreement shall remain in full force and effect and be unaffected
hereby.

         11. This Fourth Amendment Agreement may be executed in any number of
counterparts and by different parties hereto in separate counterparts, each of
which when so executed and delivered shall be deemed to be an original and all
of which taken together shall constitute but one and the same agreement.

         12. The rights and obligations of all parties hereto shall be governed
by the laws of the State of Ohio.

Address:          23000 Euclid Avenue        PARK-OHIO INDUSTRIES, INC.
                  Euclid, Ohio  44117

                                             By:
                                                -------------------------------
                                                James S. Walker, Vice President

                                             and
                                                -------------------------------
                                                Ronald J. Cozean, Secretary

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Address:          Key Center                                  KEYBANK NATIONAL ASSOCIATION,
                  127 Public Square                           Individually and as Agent
                  Cleveland, OH 44114-1206
                  Attn: Commercial Loans-                     By:
                  Cleveland District                             ----------------------------------------
                                                                  Kenneth M. Merhar, Vice President

Address:          Huntington Building                         THE HUNTINGTON NATIONAL BANK
                  917 Euclid Avenue
                  Cleveland, OH  44115                        By:
                  Attn:  Corporate Banking Div.                  ----------------------------------------
                                                                 Jerald A. Bakota, Vice President

Address:          611 Woodward Avenue                         NBD BANK
                  Detroit, MI  48226
                  Attn:  Midwest Banking                      By:
                                                                 ----------------------------------------
                                                                 Lisa A. Ferris, Vice President

Address:          200 Public Square                           MELLON BANK, N.A.
                  29th Floor
                  Cleveland, OH  44114-2301                   By:
                  Attn:  Corporate Banking Div.                  ----------------------------------------
                                                                 Henry W. Centa, Vice President

Address:          1900 East Ninth Street                      NATIONAL CITY BANK
                  Cleveland, OH 44114-0756
                  Attn: Metro/Ohio Division                   By:
                  Loc.# 2104                                     ----------------------------------------
                                                                 Anthony J. DiMare, Senior Vice President

The undersigned consent to the terms hereof.

Address:          23000 Euclid Avenue                         CASTLE RUBBER COMPANY
                  Euclid, Ohio  44117
                                                              By:
                                                                 -----------------------------------------
                                                                 James S. Walker, Treasurer

                                                              and
                                                                 -----------------------------------------
                                                                 Ronald J. Cozean, Secretary


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Address:          23000 Euclid Avenue                         KAY HOME PRODUCTS, INC.
                  Euclid, Ohio  44117
                                                              By:
                                                                 ---------------------------------
                                                                 James S. Walker, Treasurer

                                                              and
                                                                 ---------------------------------
                                                                 Ronald J. Cozean, Secretary

Address:          23000 Euclid Avenue                         GENERAL ALUMINUM MFG. COMPANY
                  Euclid, Ohio  44117
                                                              By:
                                                                 ---------------------------------
                                                                 James S. Walker, Treasurer

                                                              and
                                                                 ---------------------------------
                                                                 Ronald J. Cozean, Secretary

Address:          23000 Euclid Avenue                         BLUE FALCON INVESTMENTS, INC.
                  Euclid, Ohio  44117
                                                              By:
                                                                 ---------------------------------
                                                                 James S. Walker, Treasurer

                                                              and
                                                                 ---------------------------------
                                                                 Ronald J. Cozean, Secretary

Address:          23000 Euclid Avenue                         RB&W CORPORATION
                  Euclid, Ohio  44117

                                                              By:
                                                                 ---------------------------------
                                                                 James S. Walker, Treasurer

                                                              and
                                                                 ---------------------------------
                                                                  Ronald J. Cozean, Vice Pres. and Sec.

Address:          23000 Euclid Avenue                             BLUE FALCON FORGE, INC.
                  Euclid, Ohio  44117
                                                              By:
                                                                 ---------------------------------
                                                                 James S. Walker, Treasurer

                                                              and
                                                                 ---------------------------------
                                                                 Ronald J. Cozean, Secretary


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Address:          23000 Euclid Avenue                         TOCCO, INC.
                  Euclid, Ohio  44117

                                                              By:
                                                                 ---------------------------------
                                                                 James S. Walker, Treasurer

                                                              and
                                                                 ---------------------------------
                                                                 Ronald J. Cozean, Secretary

Address:          23000 Euclid Avenue                          THE AJAX MANUFACTURING COMPANY
                  Euclid, Ohio  44117

                                                              By:
                                                                 ---------------------------------
                                                                  James S. Walker, Vice Pres. and Treas.

                                                              and
                                                                 ---------------------------------
                                                                 Ronald J. Cozean, Secretary

Address:          23000 Euclid Avenue                          CICERO FLEXIBLE PRODUCTS, INC.
                  Euclid, Ohio  44117                           fka Blue Utica, Inc.

                                                              By:
                                                                 ---------------------------------
                                                                 James S. Walker, Vice Pres. and Treas.

                                                              and
                                                                 ---------------------------------
                                                                 Ronald J. Cozean, Vice Pres. and Sec.

Address:          23000 Euclid Avenue                         SUMMERSPACE, INC.
                  Euclid, Ohio  44117

                                                              By:
                                                                 ---------------------------------
                                                                 James S. Walker, Treasurer

                                                              and
                                                                 ---------------------------------
                                                                 Ronald J. Cozean, Secretary


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                                       SCHEDULE 1 TO FOURTH AMENDMENT AGREEMENT
                                                        ANNEX 1


                                                                            REVOLVING CREDIT       TERM LOAN
                                                                             COMMITMENT             COMMITMENT         MAXIMUM
BANKING INSTITUTIONS                                           PERCENTAGE      AMOUNT                 AMOUNT           AMOUNT
                                                                                                                
KeyBank National Association,
f.k.a. Society National Bank                                      35%        $31,500,000           $12,250,000     $ 43,750,000
NBD Bank                                                          25%        $22,500,000           $ 8,750,000     $ 31,250,000
The Huntington National Bank                                      25%        $22,500,000           $ 8,750,000     $ 31,250,000
National City Bank                                                10%        $ 9,000,000           $ 3,500,000     $ 12,500,000
Mellon Bank, N.A.                                                  5%        $ 4,500,000           $ 1,750,000     $  6,250,000

         TOTAL                                                   100%        $90,000,000           $35,000,000
         TOTAL COMMITMENT

         AMOUNT                                                                                                    $125,000,000


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PARK OHIO
FOURTH AMENDMENT AGREEMENT


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