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------------------------------- OMB APPROVAL ------------------------------- OMB Number: 3235-0145 Expires: December 31, 1997 Estimated average burden hours per response . . . 14.90 ------------------------------- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. ___)* China Yuchai International -------------------------------------------- (Name of Issuer) Common Stock -------------------------------------------- (Title of Class of Securities) 2186191 ------------------ (CUSIP Number) Check the following box if a fee is being paid with this statement [_]. (A fee is not required only if the filing person: (1) has a previous statement on file reporting beneficial ownership of more than five percent of the class of securities described in Item 1; and (2) has filed no amendment subsequent thereto reporting beneficial ownership of five percent or less of such class.) (See Rule 13d-7). *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). - ----------------------- CUSIP NO. 2186191 13G - ----------------------- - ------------------------------------------------------------------------------ NAME OF REPORTING PERSON 1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON BankAmerica Corporation - ------------------------------------------------------------------------------ CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* 2 (a) [_] (b) [_] - ------------------------------------------------------------------------------ SEC USE ONLY 3 - ------------------------------------------------------------------------------ CITIZENSHIP OR PLACE OF ORGANIZATION 4 Delaware - ------------------------------------------------------------------------------ SOLE VOTING POWER 5 NUMBER OF -0- SHARES ----------------------------------------------------------- SHARED VOTING POWER BENEFICIALLY 6 2,197,725 OWNED BY ----------------------------------------------------------- EACH SOLE DISPOSITIVE POWER 7 REPORTING -0- PERSON ----------------------------------------------------------- SHARED DISPOSITIVE POWER WITH 8 2,197,725 - ------------------------------------------------------------------------------ AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 9 2,197,725 - ------------------------------------------------------------------------------ CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* 10 - ------------------------------------------------------------------------------ PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 11 6.2% - ------------------------------------------------------------------------------ TYPE OF REPORTING PERSON* 12 HC - ------------------------------------------------------------------------------ *SEE INSTRUCTION BEFORE FILLING OUT! Page 2 - ----------------------- CUSIP NO. 2186191 13G - ----------------------- - ------------------------------------------------------------------------------ NAME OF REPORTING PERSON 1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Robertson Stephens Investment Management Co. - ------------------------------------------------------------------------------ CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* 2 (a) [_] (b) [_] - ------------------------------------------------------------------------------ SEC USE ONLY 3 - ------------------------------------------------------------------------------ CITIZENSHIP OR PLACE OF ORGANIZATION 4 Delaware - ------------------------------------------------------------------------------ SOLE VOTING POWER 5 NUMBER OF -0- SHARES ----------------------------------------------------------- SHARED VOTING POWER BENEFICIALLY 6 2,197,725 OWNED BY ----------------------------------------------------------- EACH SOLE DISPOSITIVE POWER 7 REPORTING -0- PERSON ----------------------------------------------------------- SHARED DISPOSITIVE POWER WITH 8 2,197,725 - ------------------------------------------------------------------------------ AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 9 2,197,725 - ------------------------------------------------------------------------------ CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* 10 - ------------------------------------------------------------------------------ PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 11 6.2% - ------------------------------------------------------------------------------ TYPE OF REPORTING PERSON* 12 HC - ------------------------------------------------------------------------------ *SEE INSTRUCTION BEFORE FILLING OUT! Page 3 - ----------------------- CUSIP NO. 2186191 13G - ----------------------- - ------------------------------------------------------------------------------ NAME OF REPORTING PERSON 1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Robertson, Stephens & Company Investment Management, L.P. - ------------------------------------------------------------------------------ CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* 2 (a) [_] (b) [_] - ------------------------------------------------------------------------------ SEC USE ONLY 3 - ------------------------------------------------------------------------------ CITIZENSHIP OR PLACE OF ORGANIZATION 4 California - ------------------------------------------------------------------------------ SOLE VOTING POWER 5 NUMBER OF -0- SHARES ----------------------------------------------------------- SHARED VOTING POWER BENEFICIALLY 6 2,197,725 OWNED BY ----------------------------------------------------------- EACH SOLE DISPOSITIVE POWER 7 REPORTING -0- PERSON ----------------------------------------------------------- SHARED DISPOSITIVE POWER WITH 8 2,197,725 - ------------------------------------------------------------------------------ AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 9 2,197,725 - ------------------------------------------------------------------------------ CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* 10 - ------------------------------------------------------------------------------ PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 11 6.2% - ------------------------------------------------------------------------------ TYPE OF REPORTING PERSON* 12 IA - ------------------------------------------------------------------------------ *SEE INSTRUCTION BEFORE FILLING OUT! Page 4 Item 1 (a) Name of Issuer: China Yuchai International (b) Address of Issuer's 16 Raffles Quay #26-00 Principal Executive Hong Leong Building Offices: Singapore 0104 Item 2 (a) Names of Person Filing: BankAmerica Corporation ("BAC") Robertson Stephens Investment Management Co. ("RSIMC") Robertson, Stephens & Company Investment Management, L.P. ("RSCIMLP") (b) Address of Principal 555 California Street Business Offices: San Francisco, CA 94104 (c) Citizenship: BAC and RSIMC are organized under the laws of Delaware. RSCIMLP is organized under the laws of California. (d) Title of Class of Common Stock Securities: (e) CUSIP Number: 2186191 Item 3 If this statement is filed pursuant to Rules 13d-1(b) or 13d-2(b), check whether the person filing is a: (a) [_] Broker or Dealer registered under Section 15 of the Act (b) [_] Bank as defined in Section 3(a)(6) of the Act (c) [_] Insurance Company as defined in Section 3(a)(19) of the Act (d) [_] Investment Company registered under Section 8 of the Investment Company Act (e) [X] Investment Adviser registered under Section 203 of the Investment Advisers Act of 1940 (f) [_] Employee Benefit Plan, Pension Fund which is subject to the provisions of the Employee Retirement Income Security Act of 1974 or Endowment Fund; see (S)240.13d-1(b)(1)(ii)(F) Page 5 (g) [X] Parent Holding Company, in accordance with (S)240.13d-1(b)(ii)(G) (Note: See Item 7) (h) [_] Group, in accordance with (S)240.13d-1(b)(1)(ii)(H) Item 4 Ownership* (a) Amount Beneficially Owned:** BAC 2,197,725 RSIMC 2,197,725 RSCIMLP 2,197,725 (b) Percent of Class: BAC 6.2% RSIMC 6.2% RSCIMLP 6.2% (c) Number of shares as to which such person has: (i) sole power to vote or direct the vote: BAC 0 RSIMC 0 RSCIMLP 0 (ii) shared power to vote or direct the vote: BAC 2,197,725 RSIMC 2,197,725 RSCIMLP 2,197,725 (iii) sole power to dispose or direct the disposition of: BAC 0 ________ * By virtue of the corporate relationships between Reporting Persons as described in Item 7, BAC (the parent company) may be deemed to possess indirect beneficial ownership of shares beneficially owned directly by its subsidiaries. Similarly, higher tier BAC subsidiaries may be deemed to possess indirect beneficial ownership of shares beneficially owned directly by lower tier BAC subsidiaries. The power to vote and to dispose of shares may be deemed to be shared between entities due to their corporate relationships. ** Beneficially owned by funds managed by RSCIMLP. Each of these funds beneficially owns less than 5% of the shares of the Issuer. Page 6 RSIMC 0 RSCIMLP 0 (iv) shared power to dispose or direct the disposition of: BAC 2,197,725 RSIMC 2,197,725 RSCIMLP 2,197,725 Item 5 Ownership of Five Percent or Less of a Class. If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following [_]. Item 6 Ownership of More than Five Percent on Behalf of Another Person. Not Applicable. Item 7 Identification and Classification of the Subsidiaries Which Acquired the Security Being Reported on by the Parent Holding Company. See Item 2. BAC is a registered bank holding company. RSIMC is a Delaware corporation wholly-owned by BAC. RSCIMLP is a California limited partnership and an investment adviser. RSIMC is a general partner of RSCIMLP. Item 8 Identification and Classification of Members of the Group. Not Applicable. Item 9 Notice of Dissolution of Group. Not Applicable. Page 7 Item 10 Certification. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purposes or effect. Page 8 SIGNATURE - --------- After reasonable inquiry and to the best of my knowledge and belief, the undersigned certify that the information set forth in this statement is true, complete and correct. Dated: February 6, 1998 BANKAMERICA CORPORATION* ROBERTSON STEPHENS INVESTMENT MANAGEMENT CO.* ROBERTSON, STEPHENS & COMPANY INVESTMENT MANAGEMENT, L.P.* *By: /s/ VENRICE R. PALMER Venrice R. Palmer Senior Counsel of Bank of America National Trust and Savings Association and Authorized Attorney-in-Fact (signing resolutions and powers of attorney are incorporated by reference to Schedule 13G Amendment #2 relating to Anaren Microwave, Inc.) Page 9 EXHIBIT A --------- JOINT FILING AGREEMENT ---------------------- The undersigned hereby agree that they are filing this statement jointly pursuant to Rule 13d-1(f)(1). Each of them is responsible for the timely filing of such Amended Schedule 13G and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other persons making the filing, unless such person knows or has reason to believe that such information is inaccurate. Date: February 6, 1998 BANKAMERICA CORPORATION* ROBERTSON STEPHENS INVESTMENT MANAGEMENT CO.* ROBERTSON, STEPHENS & COMPANY INVESTMENT MANAGEMENT, L.P.* *By: /s/ VENRICE R. PALMER Venrice R. Palmer Senior Counsel of Bank of America National Trust and Savings Association and Authorized Attorney-in-Fact (signing resolutions and powers of attorney are incorporated by reference to Schedule 13G Amendment #2 relating to Anaren Microwave, Inc.) Page 10