Medium
15-30 minutes
An authentic replacement part that is specially manufactured for use with Toro lawn mowers. This is the knob that is secured to the heigh-adjustment arm assembly, for correct location and uses make sure to check appropriate diagrams of your model. Please note this durable plastic part is sold individually.
Knob-arm 25-7740
OEM part for: Toro
Part Number: 25-7740
$5.26
In Stock
Ships within 1 business day 
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Compatibility
This Knob-arm will fit the following 1872 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Displaying 20 of 1872 matching models.
1872 total model matches. Try the above search to narrow your results.
This is the official OEM part for the following brands:
- Lawn Boy
- Toro
This item works with the following types of products:
- Lawn Mower
This part replaces obsolete part #: 8-4220, 6-6230
Customer Part Reviews ?
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The Knobs
Made good, works and doing the job they made to do
Guest -
April 18, 2020
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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.
Height tab broke
Billy - April 9, 2017
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Parts Used
Pushed the new one on.
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Replacing mower height adjustor
Kent - May 31, 2016
Tool Type
Lawn Mower
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set
Parts Used
I removed the wheel , then I laid out all of the parts in order that had to be removed to get to the spring arm. You may want to take a picture first too. I then replaced the spring arm. Then put all of the parts I had taken off back on. Then place the knob on the spring arm. Not too difficult once I got past the lock pins and gear. 26 year old Toro and still running great.
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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.
