Document:

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                                                                    EXHIBIT 4.15

                           CERTIFICATE OF AMENDMENT

                                      OF

                   CERTIFICATE OF THE POWERS, DESIGNATIONS,

                         PREFERENCES AND RIGHTS OF THE

                     SERIES A CONVERTIBLE PREFERRED STOCK,

                           PAR VALUE $.01 PER SHARE

                                      OF

                          OUTBOARD MARINE CORPORATION

                        _______________________________

                        (Pursuant to Section 242 of the
               General Corporation Law of the State of Delaware)

          Outboard Marine Corporation, a corporation organized and existing
under the laws of the State of Delaware (the "Corporation"), does hereby certify
as follows:

          1.  The name of the Corporation is Outboard Marine Corporation.

          2.  The date of filing of the Amended and Restated Certificate of
Incorporation of the Corporation with the Secretary of State was September 30,
1997, and the date of filing of the Certificate of the Powers, Designations,
Preferences and Rights of the Series A Convertible Preferred Stock, Par Value
$.01 Per Share (the "Certificate of Designation"), with the Secretary of State
was January 28, 2000.

          3.  This Certificate of Amendment amends the Certificate of
Designation, as now in effect, to (i) provide for the issuance of shares of
Series B Convertible Preferred Stock as Senior Stock and (ii) exempt from the
anti-dilution adjustment provisions contained therein certain specific issuances
of Common Stock by the Corporation.

          4.   Section 2 of the Certificate of Designation is hereby amended to
read in its entirety as follows:

               2.  Rank.  The Series A Preferred Stock shall, with respect to
                   ----
     dividend distributions and distributions of assets and rights upon the
     liquidation, winding up and dissolution of the Corporation, rank (i) junior
     to the outstanding shares of Senior Stock, and (ii) senior to all classes
     of common stock of the
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                                                                               2

     Corporation (including, without limitation, the common stock, par value
     $.01 per share, of the Corporation (the "Common Stock")) and to each other
     class or series of capital stock of the Corporation hereafter created other
     than the shares of Series B Preferred Stock (the Common Stock and each
     other class or series of capital stock of the Corporation other than the
     Senior Stock are hereinafter collectively referred to as the "Junior
     Stock").

          5.  Section 5(c)(iii) of the Certificate of Designation is hereby
amended to read in its entirety as follows:

                              (iii)  Issuance of Common Stock Below Current
                                     --------------------------------------
     Market Price or Conversion Price. If the Corporation shall, at any time or
     --------------------------------
     from time to time, sell or issue shares of Common Stock (regardless of
     whether originally issued or from the Corporation's treasury), or rights,
     options, warrants or convertible or exchangeable securities containing the
     right to subscribe for or purchase shares of Common Stock (excluding (A)
     shares issued in any of the transactions described in Section 5(c)(i) or
     (ii), (B) shares issued upon the conversion of any shares of Series A
     Preferred Stock, (C) options issuable pursuant to bona fide employee
     benefit plans or arrangements approved or adopted by the Corporation's
     Board of Directors, and the shares of Common Stock issuable on exercise of
     such options, (D) warrants issued by the Corporation pursuant to the
     Purchase Agreement and the shares of Common Stock issuable upon exercise of
     such warrants, (E) Common Stock purchase warrants issued pursuant to that
     certain Subordinated Notes and Warrant Purchase Agreement, dated May 1,
     2000 (the "Note Purchase Agreement") among the Corporation, Quantum
     Industrial Partners LDC and Greenlake Holdings III LLC, and the shares of
     Common Stock issuable upon the exercise of such warrants, and (F) shares
     issuable upon the conversion of any shares of Series B Preferred Stock
     which may be issued upon conversion of the Subordinated Notes issued by the
     Corporation pursuant to the Note Purchase Agreement) at a price per share
     of Common Stock (determined, in the case of rights, options, warrants or
     convertible or exchangeable securities, by dividing (x) the total
     consideration received or receivable by the Corporation in consideration of
     the sale or issuance of such rights, options, warrants or convertible or
     exchangeable securities, plus the total consideration payable to the
     Corporation upon exercise or conversion or exchange thereof, by (y) the
     total number of shares of Common Stock covered by such rights, options,
     warrants or convertible or exchangeable securities) lower than either the
     Current Market Price per share of Common Stock or the Conversion Price
     immediately prior to such sale or issuance, then the Conversion Price shall
     be reduced to the price determined by multiplying the Conversion Price in
     effect immediately prior thereto by a fraction, the numerator of which
     shall be the sum of (I) the number of shares of Common Stock outstanding
     immediately prior to such sale or issuance, plus (II) the quotient obtained
     by dividing the aggregate consideration received (determined as provided
     below) for such sale or issuance by the Applicable Price, and the
     denominator of which shall be the total number of shares of Common Stock
     outstanding immediately after such sale or issuance. Such adjustment shall
     be made successively whenever such sale or issuance is made. For the
     purposes of such adjustments, the shares of Common Stock which the holder
     of any such rights, options, warrants, or convertible or exchangeable
     securities shall be entitled to
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                                                                               3

     subscribe for or purchase shall be deemed to be issued and outstanding as
     of the date of such sale or issuance and the consideration "received" by
     the Corporation therefor shall be deemed to be the consideration actually
     received or receivable by the Corporation (plus any underwriting discounts
     or commissions in connection therewith) for such rights, options, warrants
     or convertible or exchangeable securities, plus the consideration stated in
     such rights, options, warrants or convertible or exchangeable securities to
     be payable to the Corporation for the shares of Common Stock covered
     thereby. If the Corporation shall sell or issue shares of Common Stock for
     a consideration consisting, in whole or in part, of property other than
     cash or its equivalent, then in determining the "price per share of Common
     Stock" and the "consideration" received or receivable by or payable to the
     Corporation for purposes of the first sentence and the immediately
     preceding sentence of this Section 5(c)(iii), the fair value of such
     property shall be determined in good faith by the Board of Directors of the
     Corporation and shall be the value which is agreed upon by at least 75% of
     the members thereof or if 75% of the members of the Board of Directors of
     the Corporation are unable to agree upon the value of such consideration,
     the value thereof shall be determined by an independent investment bank of
     nationally recognized stature that is selected by 75% of the members of the
     Board of Directors. The determination of whether any adjustment is required
     under this Section 5(c)(iii) by reason of the sale and issuance of rights,
     options, warrants or convertible or exchangeable securities and the amount
     of such adjustment, if any, shall be made only at the time of such issuance
     or sale and not at the subsequent time of issuance or sale of Common Stock
     upon the exercise or conversion of such rights, options, warrants or
     convertible or exchangeable securities. Upon the expiration of any such
     options, warrants or rights, the termination of any such rights to convert
     or exchange or the expiration of any options, warrants or rights related to
     such convertible or exchangeable securities, the then current Conversion
     Price, to the extent in any affected by or computed using such options,
     warrants, rights or securities or options or rights related to such
     securities, shall be recomputed to reflect the issuance of only the number
     of shares of Common Stock actually issued upon the exercise of such
     options, warrants or rights, upon the conversion or exchange of such
     securities or upon the exercise of the options or rights related to such
     securities.

          6.  Section 6(a) of the Certificate of Designation is hereby amended
to read in its entirety as follows:

                    (a) Redemption Demand.  Upon the demand of the holders of at
                        -----------------
     least 75% of the outstanding shares of Series A Preferred Stock made in
     writing to the Corporation at any time after October 1, 2008 (a "Redemption
     Demand"), the Corporation shall be required to redeem all of the shares of
     Series A Preferred Stock, at a redemption price per share equal to the
     Liquidation Preference per share plus an amount in cash equal to the
     product of (x) 15% of the then current Liquidation Preference, multiplied
     by (y) a fraction, the numerator of which is the actual number of days from
     (and including) the most recent Dividend Payment Date to (but excluding)
     the Redemption Date, and the denominator of which is 365 (the "Redemption
     Price"), but only to the extent that (A) funds are legally available
     therefor, (B) such redemption would not cause a default or event of default
     under any
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     documents governing the Corporation's outstanding indebtedness or lines of
     credit, and (C) such redemption would not violate the terms governing any
     Senior Stock then outstanding. If at the time a Demand Notice is received
     by the Corporation funds are legally available to redeem some but not all
     of the outstanding shares of Series A Preferred Stock, then the Corporation
     shall redeem as many shares of Series A Preferred Stock as its legally
     available funds permit.

          7.  Section 6(b) of the Certificate of Designation is hereby amended
to read in its entirety as follows:

                         (b) Redemption at Corporation's Option. On and after
                             ----------------------------------
     the date on which fewer than 10% of the shares of Series A Preferred Stock
     issued on the Series A Preferred Stock Issue Date remain outstanding, the
     Corporation shall have the right, at its sole option and election, to
     redeem all of the outstanding shares of Series A Preferred Stock, on not
     less than 30 days' notice of the date of redemption (any such redemption
     date pursuant to this Section 6(b) being referred to herein as an "Optional
     Redemption Date") at a redemption price per share equal to the Liquidation
     Preference per share plus an amount in cash equal to the product of (x) 15%
     of the then current Liquidation Preference, multiplied by (y) a fraction,
     the numerator of which is the actual number of days from (and including)
     the most recent Dividend Payment Date to (but excluding) the Optional
     Redemption Date, and the denominator of which is 365 (the "Optional
     Redemption Price"), but only to the extent that (A) funds are legally
     available therefor, (B) such redemption would not cause a default or event
     of default under any documents governing the Corporation's outstanding
     indebtedness or lines of credit, and (C) such redemption would not violate
     the terms governing any Senior Stock then outstanding.

          8.   Section 8 of the Certificate of Designation is hereby amended to
read in its entirety as follows:

               8.  Reissuance of Series A Preferred Stock.  Shares of Series A
                   --------------------------------------
     Preferred Stock that have been issued and reacquired in any manner,
     including shares purchased or redeemed or exchanged, shall (upon compliance
     with any applicable provisions of the laws of Delaware) have the status of
     authorized and unissued shares of preferred stock undesignated as to series
     and may be redesignated and reissued as part of any series of preferred
     stock (other than Series A Preferred Stock or Series B Preferred Stock).

          9.   Section 10 of the Certificate of Designation is hereby amended to
add the following additional defined terms:

               "Senior Stock" means the outstanding shares of Series B Preferred
     Stock.

               "Series B Preferred Stock" means the outstanding shares of the
     Corporation's Series B Convertible Preferred Stock, par value $.01 per
     share.
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          10.  Such amendments were duly adopted in accordance with the
provisions of Section 242 of the General Corporation Law of the State of
Delaware and by Section 7(c) of the Certificate of Designation.

          IN WITNESS WHEREOF, the Corporation has authorized the undersigned to
execute this certificate on this second day of May, 2000.

                              OUTBOARD MARINE CORPORATION

                              By: /s/ Eric T. Martinez
                                  --------------------
                                  Name: Eric T. Martinez
                                  Title:  Interim CFO and Vice President and
                                    Treasurer<PAGE>

                                                                    EXHIBIT 4.16

                              FIRST AMENDMENT TO
                            STOCKHOLDERS AGREEMENT

          AMENDMENT, dated May 2, 2000 (this "Amendment Agreement"), among
                                              -------------------
Outboard Marine Corporation, a Delaware corporation (the "Company"), Quantum
                                                          -------
Industrial Partners LDC, a Cayman Islands limited duration company ("QIP"),
                                                                     ---
Greenlake Holdings II LLC, a Delaware limited liability company ("Greenlake II")
                                                                  ------------
and Greenlake Holdings III LLC, a Delaware limited liability company ("Greenlake
                                                                       ---------
III"), to that certain STOCKHOLDERS AGREEMENT, dated January 28, 2000 (the
---
"Existing Agreement"), among the Company, QIP, and Greenlake II.  Unless
 ------------------
otherwise set forth in this Amendment Agreement, capitalized terms have the
respective meanings assigned to them in the Existing Agreement.

          WHEREAS, the Company, QIP and Greenlake II entered into the Existing
Agreement in connection with their acquisition on January 28, 2000 of an
aggregate of 650,000 shares of the Company's Series A Convertible Preferred
Stock, par value $.01 per share (the "Series A Preferred Stock"), and warrants
                                      ------------------------
(the "Existing Warrants") to purchase an aggregate of 5,750,000 shares of the
      -----------------
Company's Common Stock in order to restrict the transfer of such securities and
to provide for, among other things, first offer, tag-along and preemptive rights
and certain other rights under certain conditions; and

          WHEREAS, the Company proposes to issue and sell to QIP and Greenlake
III or their affiliates $15,000,000 aggregate principal amount of the Company's
Subordinated Notes due June 1, 2000 (the "Subordinated Notes"), and warrants
                                          ------------------
(the "New Warrants") to purchase an aggregate of 330,000 shares of the Company's
      ------------
Common Stock pursuant to the terms of a Subordinated Note and Warrant Purchase
Agreement, dated the date hereof (the "Subordinated Notes Purchase Agreement"),
                                       -------------------------------------
among the Company, QIP and Greenlake III; and

          WHEREAS, the Existing Agreement provides that the Existing Agreement
may amended by an amendment in writing signed by the Company and the
Stockholders holding 75% of the voting power of the Shares held by Stockholders;
and

          WHEREAS, QIP and Greenlake II hold, in the aggregate, in excess of 75%
of the voting power of the Shares held by Stockholders; and

          WHEREAS, the parties wish to amend the Existing Agreement in order to
(i) exempt the transactions contemplated by the Subordinated Notes Purchase
Agreement from the preemptive rights provisions of the Existing Agreement, (ii)
restrict the transfer of the securities to be issued pursuant to the
Subordinated Notes Purchase Agreement, and (iii) to add Greenlake III as a
Stockholder hereunder;
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          NOW, THEREFORE, the Company, QIP, Greenlake II and Greenlake III
hereby agree to amend the Existing Agreement as follows:

          1.   Amendments to Section 1 of the Existing Agreement (Definitions).
               ---------------------------------------------------------------

               (a) Section 1 of the Existing Agreement is hereby amended to add
the following additional definitions:

                   "Amendment Agreement" means the Amendment Agreement, dated
                    -------------------
     May 2, 2000, among the Company, QIP, Greenlake II and Greenlake III
     amending that certain Stockholders Agreement, dated January 28, 2000, among
     the Company, QIP, and Greenlake II.

                   "Existing Agreement" is defined in the preamble to the
                    ------------------
     Amendment Agreement.

                   "Existing Warrants" is defined in the first recital of the
                    -----------------
     Amendment Agreement.

                   "Greenlake II" is defined in the preamble to the Amendment
                    ------------
     Agreement.

                   "Greenlake III" is defined in the preamble to the Amendment
                    -------------
     Agreement.

                   "New Warrants" is defined in the second recital of the
                    ------------
     Amendment Agreement.

                   "Series A Preferred Stock" is defined in the first recital
                    ------------------------
     of the Amendment Agreement.

                   "Series B Preferred Stock" means the shares of the Company's
                    ------------------------
     Series B Convertible Preferred Stock issuable upon conversion of the
     Subordinated Notes.

                   "Subordinated Notes" is defined in the second recital of the
                    ------------------
     Amendment Agreement.

                   "Subordinated Notes Purchase Agreement" is defined in the
                    -------------------------------------
     second recital of the Amendment Agreement.
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               (b)  Section 1 of the Existing Agreement is hereby further
amended by substituting the following definitions for the definition of such
terms contained in the Existing Agreement:

                    "Preferred Stock" means the shares of the Company's Series A
                     ---------------
     Preferred Stock and Series B Preferred Stock.

                    "Stockholders" means (a) QIP, Greenlake II and Greenlake III
                     ------------
     and any transferee thereof who has agreed to be bound by the terms and
     conditions of this Agreement in accordance with Section 2.4 and (b) any
     Person who has agreed to be bound by the terms and conditions of this
     Agreement in accordance with Section 5.2(a), and the term "Stockholder"
                                                                -----------
     shall mean any such Person.

                    "Warrants" means the Existing Warrants and the New Warrants.
                     --------

          2.   Amendment of Section 4 of the Existing Agreement (Future Issuance
               -----------------------------------------------------------------
of Shares; Preemptive Rights). Section 4 of the Existing Agreement is hereby
-----------------------------
amended by adding an new Subsection 4.5 providing as follows:

                    4.5  Exempt Transactions. Anything in Sections 4.1 through
                         -------------------
     4.4 to the contrary notwithstanding, the Company may consummate the
     transactions contemplated by the Subordinated Notes Purchase Agreement,
     including the issuance of the Subordinated Notes and the New Warrants,
     without complying with the provisions of said Sections 4.1 through 4.4, and
     the holders of the securities issued pursuant to the Subordinated Notes
     Purchase Agreement, as well as any securities into which such securities
     may be converted or for which such securities may be exercised, shall enjoy
     all rights of ownership thereof notwithstanding the fact that the Company
     has not complied with the provisions of Section 4.1 through 4.4 hereof in
     connection with the initial issuance thereof.

          3.   Amendment to Section 5.1 of the Existing Agreement (After-
               ----------------------------------------------------------
Acquired Securities). Section 5.1 of the Existing Agreement is hereby amended
--------------------
and restated in its entirety to read as follows:

                    5.1  After-Acquired Securities.  All of the provisions of
                         -------------------------
     this Agreement shall apply to all of the Shares and Common Stock
     Equivalents issued pursuant to the Stock Purchase Agreement and to the
     Subordinated Notes Purchase Agreement (including, without limitation,
     shares of Series B Preferred Stock issued upon conversion of the
     Subordinated Notes).
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                                                                               4

          4.   Amendment to Section 6.4 of the Existing Agreement (Board
               ---------------------------------------------------------
Representation).  Section 6.4 of the Existing Agreement is hereby amended and
---------------
restated in its entirety to read as follows:

                    6.4  Board Representation.  For so long as QIP, Greenlake II
                         --------------------
     and Greenlake III, or Affiliates thereof, collectively own at least 50% of
     the outstanding shares of Preferred Stock, the Company's Board of Directors
     shall be expanded to add one additional director (the "Additional
                                                            ----------
     Director") who shall be selected by the holders of a majority of the
     --------
     outstanding shares of Preferred Stock.  The Company will use its best
     efforts to cause the Additional Director to be nominated and to solicit
     proxies for his or her election.

          5.   Representations and Agreements of Greenlake III.  Greenlake III
               -----------------------------------------------
does hereby acknowledge and agree that (i) it has been given a copy of the
Existing Agreement and this Amendment Agreement, afforded ample opportunity to
read and to have counsel review it, and is thoroughly familiar with its terms,
(ii) any Shares (including any Common Stock Equivalents) which it may now or
hereafter acquire are and shall be subject to the terms and conditions set forth
in the Existing Agreement, as amended by this Amendment Agreement (the
"Agreement"), and (iii) it agrees fully to be bound by the terms of the
Agreement as a Stockholder, as such term is defined in the Agreement.

          6.   Miscellaneous.
               -------------

               6.1  Headings.  The headings in this Amendment Agreement are for
                    --------
convenience of reference only and shall not limit or otherwise affect the
meaning hereof.

               6.2  GOVERNING LAW.  THIS AMENDMENT AGREEMENT SHALL BE GOVERNED
                    -------------
AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE, WITHOUT
REGARD TO THE PRINCIPLES OF CONFLICTS OF LAW OF ANY JURISDICTION.

               6.3  Continuation of Existing Agreement.  Any reference in the
                    ----------------------------------
Existing Agreement to "this Agreement" of "hereof" or using words of similar
meaning, shall be deemed to refer to the Existing Agreement as amended by this
Amendment Agreement.  Except as specifically amended hereby, the Existing
Agreement shall continue in full force and effect in accordance with its terms.
<PAGE>

                                                                               5

          IN WITNESS WHEREOF, the undersigned have executed, or have caused to
be executed, this Amendment Agreement on the date first written above.

                      OUTBOARD MARINE CORPORATION

                      By:  /s/ Eric T. Martinez
                           -------------------------------
                           Name:  Eric T. Martinez
                           Title: Interim CFO and Vice President and
                           Treasurer

                      QUANTUM INDUSTRIAL PARTNERS LDC

                      By: /s/ Michael C. Neus
                          --------------------------------
                          Name:  Michael C. Neus
                          Title: Attorney-In-Fact

                      GREENLAKE HOLDINGS II LLC

                      By: /s/ Gary K. Duberstein
                          --------------------------------
                          Name:  Gary K. Duberstein
                          Title: Vice President

                      GREENLAKE HOLDINGS III LLC

                      By: /s/ Gary K. Duberstein
                          --------------------------------
                          Name:  Gary K. Duberstein
                          Title: Vice President

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