Conair GB User Manual page 95

The blade assembly should slip on and off the motor shaft easily.
The need to use excessive force to remove the mixer assembly may bend
the blades and they may eventually break off. Correct this if it is a
problem.
*77 and *54 PRINTOUTS
After you have fixed any problems, use the *77 and *54 functions to
obtain printouts and fax them to us for evaluation.
Page 96