Easy
30-60 minutes
This is an authentic replacement part manufactured for use with Husqvarna chainsaws. The special rim sprocket fits onto the clutch drum and drives the chain around the bar. When the rim sprocket wears down it will cause the chain to slip and not spin around the bar. The rim sprocket is sold as an individual replacement part.
Rim Sprocket 3/8 7 640200036
OEM part for: Husqvarna
Part Number: 640200036
$11.20
In Stock
Ships within 1 business day 
Compatibility
This Rim Sprocket 3/8 7 will fit the following 46 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Displaying 20 of 46 matching models.
Husqvarna
Show More Compatible Models46 total model matches. Try the above search to narrow your results.
This is the official OEM part for the following brands:
- Husqvarna
- Jonsered
This item works with the following types of products:
- Chain Saw
- Saw
This part replaces obsolete part #: 504523002
Questions & Answers ?
Our customer Service team is at the ready daily to answer your part and product questions.
Ask our Team
We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
Does this fit my product?Questions & Answers for Rim Sprocket 3/8 7
Does it come with a 3/8 sprocket ? That fits a 3/8 standard chain or 3/8 low profile chain ?
Tyrel
for model number Husqvarna 55 rancher rim sprocket
asked on 2022-02-23
Hello Tyrel, Thank you for your inquiry. We show that this rim sprocket is 3/8 and fits onto the drum assembly 503453902 to drive the chain around the bar. We hope this helps and if you need help placing an order, customer service is open 7 days a week. Please feel free to give us a call. We look forward to hearing from you!
eReplacementParts Team February 23, 2022
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.
Routine Maintenance
Stewart - May 31, 2018
Tool Type
Chain Saw
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Socket set
Watched video for procedure. Very informative and helpful!
1. Removed top cover and spark plug.
2. Removed side cover/brake and chain bar.
3. Inserted piece of rope into combust. chamber.
4. Removed clutch/drum assy, rim sprocket and support bushing.
5. Reversed procedure for install.
6. Replaced fuel filter and air filter.
7. Adjusted chain, lubed sprocket, started saw, cut wood.
1. Removed top cover and spark plug.
2. Removed side cover/brake and chain bar.
3. Inserted piece of rope into combust. chamber.
4. Removed clutch/drum assy, rim sprocket and support bushing.
5. Reversed procedure for install.
6. Replaced fuel filter and air filter.
7. Adjusted chain, lubed sprocket, started saw, cut wood.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
Learn MoreOur 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.
