This is a genuine OEM supplied item that is made for riding lawn mowers and garden tractors. It is a high-quality replacement for a damaged or a missing idler arm that was installed on a new unit. Refer to the owner's manual and the appropriate diagrams for your model to ensure the proper repair procedure. Note, this high-quality idler arm is made of durable metal and is sold as an individual item. A wrench set will be needed to perform this repair.
Arm Idler 42 531166601
OEM part for: Husqvarna, Ryobi
Part Number: 531166601
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Frequently Purchased Together ?
Compatibility
This Arm Idler 42 will fit the following 685 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
- Lawn Mower Parts
This part replaces obsolete part #: 155046X421, 532155046, 532176932, 155046
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Does this fit my product?Questions & Answers for Arm Idler 42
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.
Blades would not dis-engage, engine had to be turned off and manually dis-engage.
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Pliers, Socket set, Wrench Set
Worn and needed replaced
Tool Type
Lawn Mower
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set
Parts Used
2. Removed arm idler
3. Cleaned and greased arm idler area
4. Installed new arm idler
5. Installed mower deck
Belt kept coming off
Tool Type
Lawn Tractor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Socket set, Adjustable Wrench
Parts Used
Mower deck was hard to clutch in and out
Tool Type
Lawn Tractor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Pliers, Socket set
Removed the idler
Removed and replaced the brake arm assembly and the idler and associated washers
Replaced the idler arm and the brake arm assembly
Do not lubricate any of the replaced parts. Oil will contaminate with dirt and wear out quickly!!
Lawn mower blades could not be disengaged.
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Socket set, Wrench Set
2. Removed pulley that attaches to the idler return spring.
3. Removed old worn idler arm.
4. Installed new idler arm, pulley and deck.
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.