Medium
15-30 minutes
The knob assembly is a genuine Poulan replacement part and has been OEM sourced to ensure a high level of quality. This item is intended to be used with chainsaws. The knob is used to secure the clutch cover assembly. This item may not require tools to install and it is sold as an individual replacement part.
Assembly-knob 545040603
OEM part for: Poulan, Husqvarna, Weed Eater
Part Number: 545040603
$19.91
In Stock
Order within the next 12 hours and your part ships today! 
Compatibility
This part will fit the following 6 machines
Poulan
PP3516AVX Gas Chainsaw View Diagrams & Manuals
PP4218AVX Gas Chainsaw View Diagrams & Manuals
SM4218AVX Gas Chainsaw View Diagrams & Manuals
SM4518AVX Gas Chainsaw View Diagrams & Manuals
Husqvarna
SM4218AVX (2008-09) Chain Saw View Diagrams & Manuals
Weed Eater
PP3516AVX (2012-06) Chainsaw View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Chain Saw Parts
- Saw Parts
Customer Part Reviews ?
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It's better than having a parts inventory in my garage
Great to know a site that offers easy access and speedy delivery to every single part in my chainsaw.
Guest -
October 5, 2019
Verified Purchase
Assembly knob
User friendly, eventually accurate website.
Fast delivery.
Highly Recommend!
Guest -
July 18, 2019
Verified Purchase
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Does this fit my product?Questions & Answers for Assembly-knob
How to remove broken Assy-Knob. Part description said may be removed toolless. Thanks in advance.
Charles
for model number PP4218AVX Chainsaw
asked on 2022-07-07
Hi Charles,
Thank you for your question. According to your owner's manual, remove the bar knob by lifting the lever and then turning counter-clockwise. If you have any questions, please let us know. We are open 7 days a week. We look forward to hearing from you!
eReplacementParts Team July 07, 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.
Chain came off and damaged side cover.
chris - November 2, 2017
Tool Type
Chain Saw
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers
Replaced side cover but had to remove chain tension mechanism from old cover and install in new cover.
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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.
