Exhibit 99 May 15, 2003 Securities and Exchange Commission Judiciary Plaza 450 Fifth Street, N.W. Washington, D.C. 20549 Re: Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 Ladies and Gentlemen: Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to ss. 906 of the Sarbanes-Oxley Act of 2002, in connection with the filing of the Quarterly Report on Form 10-Q of NMHG Holding Co. (the "Company") for the quarterly period ended March 31, 2003, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), each of the undersigned officers of the Company certifies, that, to such officer's knowledge: (1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company as of the dates and for the periods expressed in the Report. /s/ Reginald R. Eklund ---------------------- Name: Reginald R. Eklund Title: President, Chief Executive Officer and Director (principal executive officer) /s/ Michael K. Smith -------------------- Name: Michael K. Smith Title: Vice President Finance & Information Systems and Chief Financial Officer (principal financial officer)