Here is a great general centrifuge maintenance guide from Bruce Pursell at Ozark Biomedical.

More specific maintenance information pertinent to this model can be found in the Instruction Manual.

Specifically...

Use only 75mm capillary tubes. Never force a tube into the holder. With proper care and maintenance, the M24 centrifuge will provide years of service.

Please follow these guidelines:

Clean the inside of the centrifuge regularly. Whenever there is a tube breakage or spill, it is recommended that the inside of the centrifuge be cleaned, and if possible, disinfected (do not immerse the electrical components in any liquid).

Motor and electrical maintenance: The M24’s motor utilizes brushes which may need occasional replacement. The electrical components were designed for high reliability and should not need regular service. However, if repairs or replacement brushes are needed, please contact your local LW Scientific dealer.

Spare parts, bushes etc for the M24 Michrohaematocrit are available in Australia from GrayMed.

For calibration instructions see this video. To perform this procedure you will need a tachometer also available from GrayMed.