Step-by-Step Guide for Replacing the Main Blower Motor on a Bissell Big Green Shampooer

Step 1: Diagnose the Issue

1. Identify the Sound: If your machine makes a loud, unusual noise, it may indicate a bad blower motor.

   • Blower Motor: If the noise occurs without engaging the brush motor (without reclining the machine), the blower motor is likely the issue.
   • Brush Roll: If the noise occurs only when the brush motor is engaged, inspect the brush roll or brush motor for issues.

2. Test the Brush Roll: Manually turn the brush roll to check for any clicking or grinding sounds, which could indicate a problem with the brush motor or the roll itself.

Step 2: Prepare for Repair

1. Safety First: Ensure the machine is unplugged before starting any repairs.
2. Warranty Considerations: Note that performing repairs on a machine under warranty will void the warranty.

Step 3: Access the Blower Motor

1. Remove Screws:

   • Lean the handle assembly back to access the motor area.
   • Remove the two short screws at the back of the machine.
   • Remove the seven longer screws at the front.
   • If there’s a medium-sized screw near the flow indicator, remove that as well.

2. Remove the Motor Housing:

   • Carefully lift the back housing off to expose the motor.
   • Note any missing screws or damage inside the machine that might have contributed to motor failure.

Step 4: Remove the Blower Motor

1. Disconnect Wires:

   • The blower motor has four wires: two grounds, and positive and negative with an inline fuse.
   • Disconnect the wires, noting that some ground wires may need to be unclipped from the motor.

2. Remove the Motor:

   • Unscrew the three large, fat screws holding the motor in place.
   • Carefully lift the motor out of the machine.

Step 5: Install the New Blower Motor

1. Prepare the New Motor:

   • Attach the new inline fuse to the new motor.
   • Connect the ground wires, ensuring a secure fit.

2. Wire Connections:

   • Cut the wires on the old motor, strip them, and prepare to connect them to the new motor.
   • Wire Nut Connection: Secure the wires using wire nuts. Optionally, use zip ties near the wire nuts to reduce strain on the connections.
   • Additional Security: Wrap the wire nuts with electrical tape for added security.

3. Install the New Motor:

   • Place the motor into the housing, ensuring it’s properly seated.
   • Reattach the three large screws to secure the motor.

Step 6: Reassemble the Machine

1. Replace the Gasket:

   • Install the new gasket that comes with the motor. Ensure it’s correctly positioned with the ridge stopping it from going too far down.

2. Reattach the Housing:

   • Tuck all wires neatly inside to avoid interference.
   • Snap the housing back into place, ensuring it’s seated correctly.

3. Screw the Housing Back:

   • Reinstall the screws: two short screws in the back, and the long screws in the front.
   • If your machine has a medium screw, place it in the correct position near the flow indicator.

Step 7: Test the Repair

1. Power On: Plug in the machine and turn it on to ensure it runs smoothly without the previous noise.
2. Final Check: If the machine operates quietly, the repair is successful.

Conclusion

This guide should help you successfully replace the main blower motor on your Bissell Big Green shampooer. If you need any replacement parts, they are available through the links provided.

Disclaimer: Proceed with repairs at your own risk. If your machine is under warranty, consider taking it to an authorized service center instead.