Medium
30-60 minutes
This is a Genuine OEM replacement part used on a variety of Lawn Mowers. This item is made out of Metal and it is Sold Individually. If either the ball bearing or the bearing retainer wear out this will cause the wheels have trouble turning. Ball bearings are used to reduce friction between rotating parts. The balls or rollers take the load and spin, distributing the weight evenly while the minimal contact area of the ball reduces friction. This reduces wear on the tool and allows it to run smoothly. Bearings experience constant wear when the tool is in operation from pressure, heat, vibration and friction. Because of this, many Bearings need periodic maintenance or replacement.
Ball Bearing 104-8699
OEM part for: Toro, Lawn Boy
Part Number: 104-8699
$4.99
In Stock
Ships within 1 business day 
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Compatibility
This Ball Bearing will fit the following 643 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Toro
20339 (407820000-999999999) 20339, 22in Recycler Lawn Mower With Smartstow, (Sn 407820000-999999999)
20340 (400000000-401499999) 20340, 22in Recycler Lawn Mower With Smartstow, (Sn 400000000-401499999)
20355 (405600000-405999999) 20355, 22in Recycler Lawn Mower With Smartstow, (Sn 405600000-405999999)
20961 (400000000-402099999) 20961, 55cm Recycler Lawn Mower With Smartstow, (Sn 400000000-402099999)
21465 (400000000-408999999) 21465, 22in Recycler Lawn Mower With Smartstow, (Sn 400000000-408999999)
21765 (400000000-999999999) 21765, 55cm Recycler Lawn Mower With Smartstow, (Sn 400000000-999999999)
21768 (400000000-999999999) 21768, 55cm Recycler Lawn Mower With Smartstow, (Sn 400000000-999999999)
21773 (400000000-999999999) 21773, 55cm Recycler Lawn Mower With Smartstow, (Sn 400000000-999999999)
21774 (400000000-999999999) 21774, 55cm Recycler Lawn Mower With Smartstow, (Sn 400000000-999999999)
Lawn Boy
Show More Compatible ModelsThis item works with the following types of products:
- Lawn Mower Parts
Repair Videos ?
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Ball Bearing
Customer Part Reviews ?
Average Rating (out of 5):
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Easy repair
Item received and was easy to install. Delivery service was another matter. But it got here.
Daniel -
February 15, 2022
Verified Purchase
Quality Parts
The parts were of good quality and were the right ones. They worked out great and the lawn mower now runs and operates like new. Thank you!
Guest -
December 21, 2021
Verified Purchase
Easy Repair
Have a 10 year old Toro. Great mower, but the self-propelled transmission wore out. Love your website with the schematics and numbered parts. Found everything to rebuild the rear axle - transmission, bearings and sleeves and the mower is like new again. Liked that everything was in-stock!!
Guest -
November 11, 2020
Verified Purchase
Awesome site - easy to find parts.
Website shows ALL of the parts for my mower. Super easy to find the part I needed. Got the part when promised. 100% satisfied.
Guest -
August 26, 2020
Verified Purchase
great part
Works great Lawn mower in good shape
Guest -
June 12, 2020
Verified Purchase
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Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Self-propel stopped working
Larry - June 25, 2017
👍 3 of 3 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, snap ring pliers
Unhook plug wire
Remove plastic housings at bagger assemble to remove 3 screws for belt shroud
Block up and remove rear drive wheels
Use snap ring pliers to remove ring and pinion gears (keep track of shim washes)
Remove snap ring from bearing housing, remove wheel adjusters
Clean axle shaft and slide bearings inward
Remove 3 screws from belt guide on transmission and slide belt off
Remove transmission by pushing long shaft through housing enough to drop transmission
Check bearing and replace if needed
Reassemble in reverse order, torque bolts as needed
Remove plastic housings at bagger assemble to remove 3 screws for belt shroud
Block up and remove rear drive wheels
Use snap ring pliers to remove ring and pinion gears (keep track of shim washes)
Remove snap ring from bearing housing, remove wheel adjusters
Clean axle shaft and slide bearings inward
Remove 3 screws from belt guide on transmission and slide belt off
Remove transmission by pushing long shaft through housing enough to drop transmission
Check bearing and replace if needed
Reassemble in reverse order, torque bolts as needed
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Drive wheels would not pull lawn mower
Larry - August 31, 2016
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Socket set, Vice to set bearings
1. Remove front wheels
2. Remove height adjuster front wheels
3. Remove old bearing holders
4. Press bearings into new bearing holders with vice
5. Install new bearing holders
6. Replace height adjusters
7. Replace wheels
2. Remove height adjuster front wheels
3. Remove old bearing holders
4. Press bearings into new bearing holders with vice
5. Install new bearing holders
6. Replace height adjusters
7. Replace wheels
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Rear-wheel drive wheel would spin when making a turn (transmission). Rear wheel squeak (bearing).
Ralph - January 20, 2022
Tool Type
Lawn Mower
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Socket set, snap ring pliers, putty knife or scraper
Parts Used
1. Remove rear wheels.
2. Remove drive belt covers.
3. Remove one rear wheel support bracket.
4. Remove transmission.
5. Remove bearing from each rear wheel support bracket.
6. Re-assemble in reverse directions.
2. Remove drive belt covers.
3. Remove one rear wheel support bracket.
4. Remove transmission.
5. Remove bearing from each rear wheel support bracket.
6. Re-assemble in reverse directions.
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wheel bearings
James - November 22, 2021
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Pliers, Socket set
Parts Used
changed all 4 bearings in 10 minutes
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ball bearings worn out allowing axel to flop around and not engage drive wheel correctly.
Nikolai - November 17, 2021
Tool Type
Lawn Mower
Difficulty
Hard
Time
More than 2 hours
Tools Used
Screwdriver, Pliers, Socket set, retaining ring removal pliers, c clamps.
I'm still working on this repair. Replacing the ball bearing and bearing retainer was simple. The biggest problem is removing the retaining ring clip to access bearing retainer. I bought a special tool to expand it. But it doesn't expand it wide enough and I really had to wrestle with it. Once I got it off, the bigger challenge was putting the new one back on after replacing the ball bearing and bearing retainer. The pliers don't expand it enough to get it back on. I'm going to Northern tool to look for a better tool. The one I bought at an auto parts store simply doesn't open wide enough.
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Bad transmission
Kyle - September 10, 2021
Tool Type
Lawn Mower
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Nutdriver
Watched video on utube. Repair was not extremely difficult. They steps to change out transmission are to long for me to get into. Replaced ball bearing while I had it apart. Old transmission as well as the replacement have no way to check or add oil. If I had a way to add oil , in my opinion could have saved old transmission.
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Drive gear sheared and retainer bushing damaged when replacing.
Ron - November 20, 2020
Tool Type
Lawn Mower
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Wrench Set, Adjustable Wrench
You have to remove the drive gear and adjustment plate to get to the retainer bushing. Because it is probably rusted on, you will need to use a very large wrench or a vise and hammer if you do not have the right size wrench. After you get it part reassembly is very easy.
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rear wheel drive was worn out. needed new drive gears on rear wheels
David - November 10, 2020
Tool Type
Lawn Mower
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, snap ring pliers
R & R rear drive axle assembly,replaced drive sprockets on rear wheels both sides
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Front wheels would not move with axle
Timothy - October 24, 2020
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Pliers, Socket set, Nutdriver
Removed front wheels, drive gears, key and spring. Thrust washers were broken along with locking ring clip.
Replaced wheel bears just because I had the front end apart.
Replaced wheel bears just because I had the front end apart.
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Popping in transmission
Roger - June 30, 2020
Tool Type
Lawn Mower
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Adjustable Wrench
Changed out transmission and while at it changed drive belt, bearings, bearing cups.etc.
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Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
