Difficulty
Moderate
Steps
9
Time Required
15 - 30 minutes
Sections
3
- Battery
- 3 steps
- Side Brush
- 2 steps
- Side Brush Motor
- 4 steps
Flags
2
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BackiRobot Roomba 891
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Introduction
What you need
Step 1
Battery
- Start by flipping your Roomba onto its back on a flat surface.
- Be sure not to close the side brush bristles in the battery door during reassembly as shown by the handy warning in the second photo.
Start by flipping your Roomba onto its back on a flat surface.
Be sure not to close the side brush bristles in the battery door during reassembly as shown by the handy warning in the second photo.
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Step 2
- Unscrew both the 11mm Phillips #2 screws from the battery cover and remove cover from the Roomba.
- These captive screws are not intended to be removed from the cover.
Unscrew both the 11mm Phillips #2 screws from the battery cover and remove cover from the Roomba.
These captive screws are not intended to be removed from the cover.
Step 3
- Grasp the tabs on either side of the battery.
- Remove the battery by pulling up on the tabs.
- While you’re here, check the battery contacts for corrosion or debris.
Grasp the tabs on either side of the battery.
Remove the battery by pulling up on the tabs.
While you’re here, check the battery contacts for corrosion or debris.
Step 4
Side Brush
- Remove the 7.5mm flat head #4 screw from center of the side brush.
Remove the 7.5mm flat head #4 screw from center of the side brush.
Step 5
- Gently pull the side brush off of the motor hub.
Gently pull the side brush off of the motor hub.
Step 6
Side Brush Motor
- Remove dustbin from Roomba.
Remove dustbin from Roomba.
Step 7
- Unscrew 2 phillips #2 screws from the bottom cover.
- Remove the bottom cover.
Unscrew 2 phillips #2 screws from the bottom cover.
Remove the bottom cover.
Step 8
- Unscrew and remove the single 13mm Tri-point Y1 screw and retaining tab.
- Loosen two captive Phillips #00 16mm screws.
Unscrew and remove the single 13mm Tri-point Y1 screw and retaining tab.
Loosen two captive Phillips #00 16mm screws.
Step 9
- Grasp motor module and remove from roomba.
Grasp motor module and remove from roomba.
To reassemble your device, follow these instructions in reverse order.
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Author
with 1 other contributor
Justin Tolin
Member since: 05/29/2019
718 Reputation
5 Guides authored
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Team
South Arkansas Community College, Team S1-G1, Mitchell Summer 2019
Member of South Arkansas Community College, Team S1-G1, Mitchell Summer 2019
SACC-MITCHELL-SU19S1G1
2 Members
5 Guides authored
jeanne.curnuck - Oct 2, 2020
Reply
We did this whole process and it still doesn’t turn :0(