Easy
15-30 minutes
This is an authentic item that is supplied by the original equipment manufacturer for use with Toro lawn and garden equipment. It is a standard hardware which has multiple applications depending on the model of your unit, please make sure to refer to the appropriate diagrams of your model for the correct location and application of this item. Keep in mind this high-quality nut is made of durable metal and is sold individually.
Nut 603773
OEM part for: Toro, Lawn Boy
Part Number: 603773
$3.99
In Stock
Ships within 1 business day 
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Compatibility
This Nut will fit the following 1183 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Toro
Lawn Boy
Show More Compatible ModelsThis item works with the following types of products:
- Lawn Mower Parts
- Snowblower Parts
- Lawn Tractor Parts
- Edger Parts
- Trimmer Parts
This part replaces obsolete part #: 125-5069, 603733
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Great parts for an easy repair!
Everything I ordered fit perfectly and went together easily.
Guest -
May 19, 2023
Verified Purchase
Find Part(s) by Model# - Order - Install - Yahtzee!
A number of parts to repair a broken clutch pin in the rear wheel assembly of a Toro SuperRecycler
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May 21, 2022
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Questions & Answers ?
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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.
One of the front wheels broke off
Ken - October 9, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Wrench Set, Adjustable Wrench
The bolt that held the wheel on broke. I ordered the replacement bolt, nut & washer for my make/model lawn mower and used the wrenches to re-attach the wheel.
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wheel bolt broke
Dwight - May 7, 2022
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Socket set
Parts Used
Replaced broken bolt with new bolt and nut using a socket wrench.
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Front wheel shoulder screw broke and wheel fell off.
Peter - August 11, 2020
Tool Type
Lawn Mower
Difficulty
Medium
Time
30-60 minutes
Tools Used
Socket set, Wrench Set
Parts Used
Replaced screw with new screw. I suggest replacing both front wheel screws when one breaks since the other side had broken a couple of weeks before. It’s a Toro Pace mower and about 10 yrs. old. It’s a great mower.
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Drive tire broke
Russ - October 2, 2019
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Socket set
Parts Used
Unbolted broken wheel.
Replaced it with new wheel.
Tightened bolt.
Tested function.
Mowed law..
Super easy repair. Mower is like new.
Replaced it with new wheel.
Tightened bolt.
Tested function.
Mowed law..
Super easy repair. Mower is like new.
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Lost nut to shoulder bolt, wear on shoulder bolt and bushing, and broken cover wheel
Thomas - August 17, 2018
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Wrench Set
Simple installation requiring only one end wrench.
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Shoulder bolt snapped
Greg - December 15, 2016
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Wrench Set, Vice
Parts Used
Disassembled the wheel to the bracket assembly, removed old hardware the reassembled
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The bolt that attaches the whole wheel and height control cracked in two.
Vishal - July 18, 2017
👍 0 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Socket set, Wrench Set, Adjustable Wrench
1. Went to your site to look at which parts had been there before they broke off and fell somewhere in the yard.
2. Ordered the parts and waited them to arrive.
3. Unscrewed the bolt-shoulder from the cutting height mechanism (a.k.a. arm pivot), allowing me to remove the wheel.
4. Slipped the new bolt that had been cracked (screw-shoulder) into the arm pivot.
5. Re-attached the wheel.
6. Slip the spacer-wheel over the screw-shoulder.
7. Slip the screw-shoulder through the hole in the chassis.
8. Place the washer-flat on the screw-shoulder
9. Screw on the nut to the screw-shoulder.
2. Ordered the parts and waited them to arrive.
3. Unscrewed the bolt-shoulder from the cutting height mechanism (a.k.a. arm pivot), allowing me to remove the wheel.
4. Slipped the new bolt that had been cracked (screw-shoulder) into the arm pivot.
5. Re-attached the wheel.
6. Slip the spacer-wheel over the screw-shoulder.
7. Slip the screw-shoulder through the hole in the chassis.
8. Place the washer-flat on the screw-shoulder
9. Screw on the nut to the screw-shoulder.
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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.
