Medium
More than 2 hours
This is an authentic replacement part manufactured for use with lawnmower small engines. The o-ring seal is commonly used to seal the oil pump cover. This o-ring is sold as an individual replacement part, please see model diagram for associative parts.
Seal-o Ring 690589
OEM part for: Briggs and Stratton, Toro
Part Number: 690589
$8.78
In Stock
Ships within 1 business day 
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Compatibility
This Seal-o Ring will fit the following 8909 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
This item works with the following types of products:
- Lawn Tractor Parts
This part replaces obsolete part #: 280801
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Must needed part to get engine running again
Part as advertised. Good fit, form and function. Took a little longer to get than I expected, but not excessive.
Tommy -
July 13, 2019
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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.
Oil Leak
Kent - February 6, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
More than 2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Nutdriver, Impact wrench to remove electric clutch.
Removed Engine, removed oil pump, removed oil pan, spent a great deal of time removing the old gasket taking care to prevent pieces from entering the engine. Removed seal, reinstalled new seal, reinstalled new gasket, replaced oil pan, replaced oil pump and o-ring, reinstalled engine, installed new drive belt, started and checked for leaks and proper operating. Everything fit perfectly and now with a new dry drive belt the mower is once again moving forward and backward at the desired speed without the essence of burning belt and oil.
A note of caution, when reinstalling the oil pan over the non chamfered crankshaft the seal is very easily damaged. It requires assistance in the form of carefully manipulating the seal over the crankshaft. I used a jewelers hex screwdriver but any small blunt object to guide the seal without cutting would suffice. Also scribing a reference mark on the the governor arm and shaft ensures it goes back on in the proper position. If you forget to do this you must reference technical data for proper installation to prevent engine overspeed damage. Simple procedure but too long to write in space provided.
A note of caution, when reinstalling the oil pan over the non chamfered crankshaft the seal is very easily damaged. It requires assistance in the form of carefully manipulating the seal over the crankshaft. I used a jewelers hex screwdriver but any small blunt object to guide the seal without cutting would suffice. Also scribing a reference mark on the the governor arm and shaft ensures it goes back on in the proper position. If you forget to do this you must reference technical data for proper installation to prevent engine overspeed damage. Simple procedure but too long to write in space provided.
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governor was broke
J.K. - October 23, 2019
Tool Type
Lawn Tractor
Difficulty
Easy
Time
More than 2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Adjustable Wrench
took motor out , made repairs ..
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leaking crankcase gasket
Eugene - December 29, 2018
Tool Type
Lawn Tractor
Difficulty
Hard
Time
More than 2 hours
Tools Used
Socket set, Wrench Set, Adjustable Wrench
removed engine from the lawn tractor. then turn it upside down to remove the crankcase to make the repairs.
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The governor blew up inside the case.
Dave - June 14, 2018
Tool Type
Lawn Tractor
Difficulty
Medium
Time
More than 2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Adjustable Wrench
Drained the oil, removed the engine from mower, removed oil pump, split the case cleaned all the old gasket material, cleaned both halves of the case, replaced the governor assembly, installed new gaskets, put the case back together, put engine back on mower, installed clutch and pulley system, adjusted the governor, started the mower and when to mowing the yard, no issues, and ran like a brand new mower.
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Oil leak
Terry - June 7, 2018
Tool Type
Lawn Mower
Difficulty
Medium
Time
1-2 hours
Tools Used
Pliers, Socket set, Wrench Set
Parts Used
Unhooked throttle cable.
Unhooked wiring and fuel line.
Removed muffler.
Removed pto clutch.
Removed transmission drive pulley.
Removed engine mounting bolts.
Removed engine.
Removed engine sump pan.
Cleaned old material from sump.
Installed new gasket
Installed and torqued sump.
Installed oil pump with new o-ring.
Reinstalled engine.
Reinstalled engine mounting bolts.
Reinstalled transmission drive pulley.
Reinstalled pto clutch.
Reinstalled muffler.
Hooked wiring and fuel line back up.
Reinstalled throttle cable.
Filled engine with oil.
Unhooked wiring and fuel line.
Removed muffler.
Removed pto clutch.
Removed transmission drive pulley.
Removed engine mounting bolts.
Removed engine.
Removed engine sump pan.
Cleaned old material from sump.
Installed new gasket
Installed and torqued sump.
Installed oil pump with new o-ring.
Reinstalled engine.
Reinstalled engine mounting bolts.
Reinstalled transmission drive pulley.
Reinstalled pto clutch.
Reinstalled muffler.
Hooked wiring and fuel line back up.
Reinstalled throttle cable.
Filled engine with oil.
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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.
