Easy
15-30 minutes
This knee joint is a genuine replacement part sourced directly from Husqvarna. It is compatible for use with many models of chainsaws. This knee joint It is made of metal and plastic. It should be replaced if it is broken. A screwdriver is needed for the replacement of this part. It does not include the pin (part 503892901).
Knee Joint 503890802
OEM part for: Husqvarna, Jonsered
Part Number: 503890802
$41.09
In Stock
Ships within 1 business day 
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Compatibility
This Knee Joint will fit the following 205 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Husqvarna
Jonsered
Show More Compatible ModelsThis item works with the following types of products:
- Chain Saw Parts
- Saw Parts
This part replaces obsolete part #: 503890801
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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.
Failed to set brake properly before removing chainsaw cover
Richard - May 9, 2016
👍 10 of 10 people found this instruction helpful
Tool Type
Chain Saw
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Homemade sprocket
Parts Used
Read carefully the owner's manual procedure for removing cover BEFORE removing cover from chainsaw! Or, watch you tube video for proper procedure--it would have saved me from needing this replacement part. Not having done either, after prying the cover off to get at the actual chain saw, it became quite obvious that the cover was not going to back in place without some tool to reset the safety brake which had not been properly set before disassembly. Brute force was not the answer. Broke the plastic spring guide ( aka knee joint) in several attempts to force said spring back in place. Frustration led to you tube videos in what not to do and what one should do. Improvised sprocket to reset the brake and used the replacement knee joint to effect the repair. Took 20 minutes to make the tool, and five minutes to put the assembly back together.
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Chain brake broke
Dave - May 24, 2019
Tool Type
Chain Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Removed the old parts and installed the new parts. Very easy job to complete.
The hardest part was putting the spring in place. To compress the spring , I used a medium sized flat screw driver and placed it in the end of the spring so it screw driver went part way in the spring and the wider part was able to push on the spring and with my other hand, hold down the rest of the spring and components and pop the spring in place.
The hardest part was putting the spring in place. To compress the spring , I used a medium sized flat screw driver and placed it in the end of the spring so it screw driver went part way in the spring and the wider part was able to push on the spring and with my other hand, hold down the rest of the spring and components and pop the spring in place.
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Brake on husqvarna broke
Fred - April 4, 2018
Tool Type
Chain Saw
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Clamp
Parts Used
Removed old brake replaced knee joint and put spring back in knee joint and buttoned everything up then put brake back into install position .
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Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
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.
