There is hereby created a cumulative reserve fund for equipment and capital purchases. The initial resources of the fund shall be provided by a contribution from the current expense fund in an amount to be determined by the council upon adoption of the 1985 annual budget. The cumulative reserve fund for equipment and capital purchases shall not be used as a substitute for the capital budget required by chapter 4.26 SCC. The purpose of the fund is to accumulate and earmark resources to finance the purchase and replacement of the categories of fixed assets listed below which are related to general government operations.