Easy
30-60 minutes
This is an original part from Husqvarna. The hex head washer bolt (7/16-24 X 1/4) is compatible with many lawn tractors. This threaded metal item is often used to secure components onto the mower deck. The bolt is sold individually. A wrench is needed for the proper installation.
Bolt, Hex, Washer, Head, 7/16- 874490736
OEM part for: Husqvarna
Part Number: 874490736
$13.69
In Stock
Ships within 1 business day 
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Compatibility
This Bolt, Hex, Washer, Head, 7/16- will fit the following 351 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 #: 74490736, 8721407-16, 872140716, 72140716
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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.
Idler pulley siezed up
John - September 18, 2022
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Socket set, Wrench Set
The day before heading out of town on business the idler pulley seized up. I dropped the 54" mower deck and confirmed the problem. I ordered the parts which arrived the day I got home from my trip. The parts all went together as planned and with a new belt that I already had on hand I was back in business. I was happy I could "get cutting" sooner than later, especially the way my grass is growing this year. Thank you
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Replaced stationary idler pulley and pully idler on rider mower deck
John - May 14, 2021
Tool Type
Lawn Tractor
Difficulty
Medium
Time
1-2 hours
Tools Used
Socket set, Wrench Set
1. removed the mower deck
2. removed the 2 damaged pullies using a socket set and a wrench
3. installed the 2 new pullies using a socket set and a wrench
4. reinstalled mower deck to rider mower
5. started mowing.........and all went well!
2. removed the 2 damaged pullies using a socket set and a wrench
3. installed the 2 new pullies using a socket set and a wrench
4. reinstalled mower deck to rider mower
5. started mowing.........and all went well!
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Pulley bearing went out
Donell - May 7, 2021
Tool Type
Lawn Tractor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, None
It was easy just pull the mower deck and replace parts
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Bearing seized and cause bolt failure.
Daniel - November 2, 2020
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Wrench Set, Nutdriver, Adjustable Wrench
Removed pulley cover. Assembled bolt, pulley, and thin washer. Making sure to place tensioner bracket correctly. Rerouted belt. Replaced pulley cover.
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Idler replaced
Robert - August 27, 2020
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Socket set
Unhook mower from Tractor, remove old idler ( unscrew old carriage bolt ) install new one , hook lawn back into Tractor . R S
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Idler bushing failed
Harry - October 13, 2018
Tool Type
Lawn Tractor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Power Drill, Socket set
Unbolted old idler from deck installed and bolted new idler.
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Idler pulley came off mower deck
jeff - August 16, 2018
Tool Type
Lawn Tractor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Pliers, Socket set, Wrench Set
1. Remove deck from mower
2. Remove old nut and bot from idler arm.
3. Replace new pulley, spacers, nut, and new bolt.
4. Torque nut and bolt. Lube deck, then replace deck.
2. Remove old nut and bot from idler arm.
3. Replace new pulley, spacers, nut, and new bolt.
4. Torque nut and bolt. Lube deck, then replace deck.
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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.
