Step 1: The electrical supply to the appliance should be cut off.
Step 2: The screws that hold the screw cover in place should be taken out with a screwdriver.
Step 3: The mounting bolts should be detached, then the old coupler should be extracted.
Step 4: The new coupler should be taken and fitted onto the motor shaft.
Step 5: The coupler should be fastened using the mounting bolts and then the screw cover should be reattached.
Step 6: The electrical power to the appliance should be restored.
Step 7: The appliance should be verified to ensure the coupler has been successfully replaced.
Please remember, these instructions should be served as general guidance and should always be referenced alongside the manufacturer's manual, if one is available.