Easy
15-30 minutes
This is a flat metal washer designed for use with various chainsaw models to enhance the secure fastening of the main drive sprocket within the chain drive. It is an authentic OEM washer meant to be positioned between the main drive sprocket and a securing screw, both available separately. Before making your purchase, it is advisable to contemplate replacing the corresponding screw when replacing this washer. This ensures that they wear uniformly, establishing a sturdy connection, particularly in equipment that experiences substantial vibrations during operation. If you observe wear on your main drive sprocket or encounter issues such as chain skipping or dislodging, contemplate replacing the hardware responsible for its fastening, including this washer, to fortify the entire drive assembly.
Washer 90618229
OEM part for: DeWALT
Part Number: 90618229
Ships within 1 business day 
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Frequently Purchased Together ?
Compatibility
This part will fit the following 9 machines
DeWALT
This item works with the following types of products:
Customer Part Reviews ?
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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.
The sproket was worn and the bolt had snapped.
Tool Type
Chain Saw
Difficulty
Medium
Time
Less than 15 minutes
Tools Used
Screwdriver
2. I removed the broken bolt.
3. I then removed the plastic plate holding the sprocket in place.
4. I then slid off the worn sprocket, replaced it with the new sprocket, installed the new washer, and bolted it on with the left threaded screw.
5. Then I put everything back together.
sprocket worn
Tool Type
Chain Saw
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Socket set
Parts Used
chain detached from sprocket
Tool Type
Chain Saw
Difficulty
Medium
Time
15-30 minutes
Tools Used
Power Drill, Socket set
Parts Used
cleaned parts of accumulated sawdust
replaced washer and LEFT-handed screw to sprocket shaft
reinstalled bar with chain
Lost the screw and washer on the chain sprocket
Tool Type
Chain Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Pliers, #15 star bit long reach
drive sprocket damaged
Tool Type
Chain Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Wrench Set
striped sprocket
Tool Type
Chain Saw
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, hamer
Drive sprocket stripped
Tool Type
Chain Saw
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Power Drill, Nutdriver
Washer and screw were missing causing the chain to come off.
Tool Type
Chain Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Bolt broke off. Had to remove and replace
Tool Type
Chain Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Adjustable Wrench
Parts Used
chain kept coming off and I found that the washer and retaining ring had come off and gotten lost
Tool Type
Chain Saw
Difficulty
Medium
Time
30-60 minutes
Tools Used
, homemade installation tool for retaining ring
Parts Used
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.
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.
