Medium
30-60 minutes
This is an OEM part sourced directly from the manufacturer. The crownlock nut is commonly found in Craftsman lawn tractors and lawn mowers. This part is made of metal, and is generally used to secure the link on the suspension arm. Please be aware that there are different nuts used in the machine. Refer to the parts diagram to be sure of ordering the correct part. You will require a wrench when replacing this item. This product is available as an individual replacement part.
Nut-crown Lock 3/8-24 Unf 873540600
OEM part for: Husqvarna
Part Number: 873540600
$3.99
In Stock
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Compatibility
This Nut-crown Lock 3/8-24 Unf will fit the following 4501 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Husqvarna
Show More Compatible ModelsThis item works with the following types of products:
- Lawn Mower Parts
This part replaces obsolete part #: 73540600
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easy repair
works fine
Guest -
June 16, 2023
Verified Purchase
Just a nut
Just a nut. I used the old ones and saved these.
Guest -
September 18, 2020
Verified Purchase
good info
Thanks for being 100% accurate on the timing on the shipments. That enabled me to plan alternate workarounds and get the tractor ready so I could repair it the day after receiving the complete shipment instead of piecemeal repairs.
Fact based Information is the key to good accurate planning and implementation. Thanks again
Guest -
July 21, 2020
Verified Purchase
Worked like a charm!
All I could ask for. Very satisfied.
Guest -
October 1, 2019
Verified Purchase
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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.
Steering drag linkage bars were worn and loose. Needed to be replaced.
david - October 13, 2018
👍 2 of 2 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
1-2 hours
Tools Used
Socket set, Wrench Set, Adjustable Wrench, 2 Ton hoist (jack)
1) Using a standard floor hoist (jack), raise the front end of riding mower high enough to allow room for socket wrench to remove linkage nuts.
2) Using socket wrench and open end wrench; loosen and remove old linkage nuts and old lock washers. Tap on old drag linkage bar with rubber hammer and remove bar.
3) Insert new drag linkage bar.
4) Place new lock washers and finger tighten nuts on both ends of new linkage bar. Using socket wrench and open end wrench, tighten both nuts securely.
5) Lower front end of riding mower using the floor hoist (jack).
2) Using socket wrench and open end wrench; loosen and remove old linkage nuts and old lock washers. Tap on old drag linkage bar with rubber hammer and remove bar.
3) Insert new drag linkage bar.
4) Place new lock washers and finger tighten nuts on both ends of new linkage bar. Using socket wrench and open end wrench, tighten both nuts securely.
5) Lower front end of riding mower using the floor hoist (jack).
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Just normal wear and tear. The Tractor is 15years old
shawn - December 16, 2018
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Socket set, None
Dropped the deck replaced parts put mower deck back up
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Both the right and left link arms broke leaving the mower deck just scraping the ground
robin - September 21, 2017
Tool Type
Lawn Tractor
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Pliers, Wrench Set
Had to completely remove mower deck to reinstall left link arm if you only had to replace right link arm you could do it from side but very tight on arm. Works great now thank you.
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Broken lift link.
Tom - August 28, 2017
Tool Type
Lawn Tractor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Socket set, Wrench Set
1. Lowered the deck.
2. Removed the broken link.
3. Installed the new link.
4. Propped up the deck to start the nut.
5. Tightened the nut until I had the same measurement to the deck bottom.
2. Removed the broken link.
3. Installed the new link.
4. Propped up the deck to start the nut.
5. Tightened the nut until I had the same measurement to the deck bottom.
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The deck fell off
kim - July 26, 2017
Tool Type
Lawn Tractor
Difficulty
Medium
Time
More than 2 hours
Tools Used
Pliers, Socket set, Wrench Set, Nutdriver, Adjustable Wrench
1. Put front deck bars on mower
2. Put hangers on lawn mower
3. Lifted deck up and blocked it
4. lined it up and secure hangers
2. Put hangers on lawn mower
3. Lifted deck up and blocked it
4. lined it up and secure hangers
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Nut came loose.
Martin - May 14, 2017
Tool Type
Lawn Tractor
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Nutdriver
Replaced the pivot bearing and the nut with a socket. Easy fix!
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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.
