Easy
15-30 minutes
This manufacturer sourced replacement part designed for use with a variety of handheld lawn and garden equipment. A lock nut is a type of nut that resists loosening when properly threaded onto a bolt. This is a standard hardware which will have multiple applications based on your equipment. This lock nut is made out of metal and it is sold individually.
Nut 5 90050000005
OEM part for: Echo, Shindaiwa
Part Number: 90050000005
$5.95
In Stock
Ships within 1 business day 
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Compatibility
This Nut 5 will fit the following 4390 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Displaying 20 of 4390 matching models.
Shindaiwa
Show More Compatible Models4390 total model matches. Try the above search to narrow your results.
This is the official OEM part for the following brands:
- Echo
- Little Wonder
- Shindaiwa
This item works with the following types of products:
- Blower
- Chain Saw
- Cultivator
- Drill
- Edger
- Grass Trimmer
- Hedge Trimmer
- Multi-Tool
- Paint Sprayer
- Pruner
- Reciprocating Saw
- Saw
- Trimmer
This part replaces obsolete part #: NUT-5, 01500-05041
Repair Videos ?
Articles:
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Filthy Filters? This article will show you how to install a filter kit on an Echo SRM-225 trimmer....
May 27, 2015
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Customer Part Reviews ?
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Handle pRts
Part was an exact replacement of parts needed and working perfectly
Guest -
August 14, 2020
Verified Purchase
fit ok
everything ok. service was fast.
Martin -
December 10, 2019
Verified Purchase
Eco Trimer Parts
Parts arrived in great condition, all parts fit my unit without issue. great service
Guest -
December 9, 2019
Verified Purchase
right part
it was the correct part.
Guest -
August 16, 2019
Verified Purchase
Perfect
Will drel with again. Grrat company
Guest -
April 25, 2019
Verified Purchase
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.
Broken bolt on exhaust muffler.
Fausto - April 17, 2020
Tool Type
Edger
Difficulty
Easy
Time
15-30 minutes
Tools Used
Power Drill, Socket set, Allen bit
Remove muffler cover, remove cylinder shroud, remove muffler bolts & washers.
Install new bolts, and re assembly.
Install new bolts, and re assembly.
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Broken coupling...
Steve - September 14, 2019
Tool Type
Pruner
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Wrench Set, Nutdriver
Replace broken coupling w/ knob etc.
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Missing nut,bolt and knob
Christopher - May 25, 2018
Tool Type
Pruner
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Socket set, Nutdriver
My Echo ppt-265 gas chain saw was in need of some parts for the pole to extend. ereplacement parts had the items I needed and shipment was fast. If you have an older piece of equipment try this place before buying a new one. I will be doing business with them from now on thanks ereplacement parts until next time.
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Muffler nuts had rusted off
Keven - March 18, 2018
Tool Type
Trimmer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Pliers, Nutdriver
Parts Used
Cut the existing nut off with a side grinder. Was pretty easy to replace from that point.
Thanks for making parts easy to get,
Keven
Thanks for making parts easy to get,
Keven
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Edger (about 10 years old) wouldn't start because the primer pump had worn out.
William - August 9, 2016
Tool Type
Edger
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, 3 mm Allen wrench
Primer Pump:
NOTE - Empty fuel tank before starting any work. Next, be sure to clean area around the Primer Pump before you remove it to avoid dirt/debris from getting in the pump.
1. Remove fuel tank guard/shield with a 3 mm Allen wrench.
2. Remove screws holding the fuel tank to the motor with a Phillips screwdriver. DO NOT remove the fuel line from the tank. Just move the tank out of the way to have access to the Primer Pump bracket.
3. Remove the Primer Pump bracket with a very small Phillips screwdriver.
4. Install the new Primer Pump.
5. Installed fuel tank.
6. Installed fuel tank guard/shield.
Air Filter:
1. No tools required. Air filter cover knob can be removed by hand.
Fuel Filter:
1. Remove the fuel filler cap.
2. Use a stiff gauge wire, or something you can "hook" the fuel line with, to pull it out of the fuel tank.
3. Carefully pull the old fuel filter off by hand then install the new fuel filter.
4. Install fuel line and filter back into the fuel tank.
Fill fuel tank with fresh fuel/oil mixture.
Prime pump and start.
Check for fuel leaks around Primer Pump.
NOTE - Empty fuel tank before starting any work. Next, be sure to clean area around the Primer Pump before you remove it to avoid dirt/debris from getting in the pump.
1. Remove fuel tank guard/shield with a 3 mm Allen wrench.
2. Remove screws holding the fuel tank to the motor with a Phillips screwdriver. DO NOT remove the fuel line from the tank. Just move the tank out of the way to have access to the Primer Pump bracket.
3. Remove the Primer Pump bracket with a very small Phillips screwdriver.
4. Install the new Primer Pump.
5. Installed fuel tank.
6. Installed fuel tank guard/shield.
Air Filter:
1. No tools required. Air filter cover knob can be removed by hand.
Fuel Filter:
1. Remove the fuel filler cap.
2. Use a stiff gauge wire, or something you can "hook" the fuel line with, to pull it out of the fuel tank.
3. Carefully pull the old fuel filter off by hand then install the new fuel filter.
4. Install fuel line and filter back into the fuel tank.
Fill fuel tank with fresh fuel/oil mixture.
Prime pump and start.
Check for fuel leaks around Primer Pump.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
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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.
