Easy
15-30 minutes
This is a genuine OEM sourced hardware that is specially made for MTD and Troy-Bilt tillers. It is utilized to provide a tight seal on the eccentric shaft, unfortunately, over time it will wear out and it may begin to crack eventually requiring a replacement to ensure peak performance. Keep in mind this high-quality seal is made of durable rubber material and is sold individually. Please make sure to check the diagrams of your model for the exact location of this component.
Seal-oil 921-04034
OEM part for: Troy-Bilt, MTD
Part Number: 921-04034
$10.79
In Stock
Ships within 1 business day 
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Compatibility
This Seal-oil will fit the following 213 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Troy-Bilt
Show More Compatible ModelsThis item works with the following types of products:
This part replaces obsolete part #: 9622, 721-04034, GW-9622
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The right part to get completed
Work like it should
Greg -
August 8, 2022
Verified Purchase
Fit perfectly
Fixed the transfer case leak
Ursula -
September 24, 2019
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.
Eccentric Seal was leaking on my Troy Bilt Horse Tiller
Kevin - April 28, 2017
👍 8 of 8 people found this instruction helpful
Tool Type
Cultivator
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Wrench Set, Punch and Hammer
Parts Used
1. Put the tiller in the fast gear setting. This will keep it from moving and give more access to the squeeze pin.
2. Tilt the tiller forward so you have more room and can get to the eccentric shaft a little easier.
3. Take the linkage loose that connects the speed selector to the shaft.
4. Drive the squeeze pin out using a hammer and a punch.
5. Slide the shifter off of the shaft.
6. Use a small screwdriver to remove the old seal and whip everything down with a clean cloth.
7. Put the new seal in making sure it is pushed in as much as possible. The punch will work well again.
8. Put the shifter back on the shaft making sure it is in the same position as when it was removed and drive the squeeze pin in with the hammer and punch.
9. Reconnect the linkage for the shifter and the tiller is ready to go.
2. Tilt the tiller forward so you have more room and can get to the eccentric shaft a little easier.
3. Take the linkage loose that connects the speed selector to the shaft.
4. Drive the squeeze pin out using a hammer and a punch.
5. Slide the shifter off of the shaft.
6. Use a small screwdriver to remove the old seal and whip everything down with a clean cloth.
7. Put the new seal in making sure it is pushed in as much as possible. The punch will work well again.
8. Put the shifter back on the shaft making sure it is in the same position as when it was removed and drive the squeeze pin in with the hammer and punch.
9. Reconnect the linkage for the shifter and the tiller is ready to go.
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Oil leak
ralph - January 29, 2020
👍 1 of 1 people found this instruction helpful
Tool Type
Cultivator
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Power Drill, O ring pliers
Parts Used
Replace oil seal
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Seal leaks
Ursula - September 26, 2019
Tool Type
Cultivator
Difficulty
Easy
Time
15-30 minutes
Tools Used
Pliers, Wrench Set, Hammer and seal installer
Parts Used
Removed Pto (3/4" wrench) ,disconnect high/ low shifter arm( side cutter for cotter pin) ,remove seal( use old screw driver), clean area, install new seal( use socket or pipe to drive seal in ,until bottoms out) , assemble in reverse order.
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Leaked oil
Jack - April 13, 2019
Tool Type
Cultivator
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Socket set
Parts Used
Replaced both oil seals on tiller.
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Axle oil seals were leaking on my Troybilt Horse tiller
Steve - December 15, 2018
Tool Type
Cultivator
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Hammer and punch
Remove both wheels after setting rototiller on blocks by driving out roll pins.
Using hammer and narrow screwdriver drive the screwdriver through the seal and pry out of casting.
Remove circlip from both sides of axle.
Remove old thrust washers and replace with new.
Install new circlips on both sides of axle.
Apply a small amount of gasket sealer to outside of axle seals.
Push seals over axle ends and with an appropriate size piece of pipe and carefully tap into place.
Reinstall wheels using new roll pins to secure to axle.
Using hammer and narrow screwdriver drive the screwdriver through the seal and pry out of casting.
Remove circlip from both sides of axle.
Remove old thrust washers and replace with new.
Install new circlips on both sides of axle.
Apply a small amount of gasket sealer to outside of axle seals.
Push seals over axle ends and with an appropriate size piece of pipe and carefully tap into place.
Reinstall wheels using new roll pins to secure to axle.
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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.
