Easy
Less than 15 minutes
The extension spring goes between the eyelet-guide and the large spool. This is a genuine replacement part used in trimmers made by Toro and Lawn Boy. The spring is made out of metal and is sold individually. A pair of pliers might be needed when replacing this part if it becomes broken.
Spring-extension 105-9423
OEM part for: Toro, Lawn Boy
Part Number: 105-9423
$3.99
In Stock
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Compatibility
This Spring-extension will fit the following 108 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:
- Trimmer Parts
- Hedge Trimmer Parts
- Grass Trimmer Parts
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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.
drum cap broken spring missing
William - October 30, 2020
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, no tools used
Parts Used
1. put spring in
2. put line on drum
3. put cap on
4. that easy
2. put line on drum
3. put cap on
4. that easy
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Spring broke
Omar - April 10, 2018
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Easy fix just remove cap and install spring in middle of trimmer.
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Trimmer wouldn't feed line
Tim - June 5, 2017
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Everything was hand tightened
1. Removed old cap drum and spool
2. Inserted new eyelet
3. Rewound the new spool
4. Insert new spring into spool
5. Feed string through eyelet and attach spool to trimmer
6. Hold spool firmly in place with one hand while attaching cap drum with the other
7. Tight firmly with hand
2. Inserted new eyelet
3. Rewound the new spool
4. Insert new spring into spool
5. Feed string through eyelet and attach spool to trimmer
6. Hold spool firmly in place with one hand while attaching cap drum with the other
7. Tight firmly with hand
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Weed cutter line would not advance
grant - June 1, 2017
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Pliers
1. Removed the cord cap.
2. Inserted the new spring and the guide.
3. Oiled all elements to reduce the friction.
4. Tested and ran the device.
Oil made it easier to unscrew cap for maintenance and for line to advance.
2. Inserted the new spring and the guide.
3. Oiled all elements to reduce the friction.
4. Tested and ran the device.
Oil made it easier to unscrew cap for maintenance and for line to advance.
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The spool was broken
Richard - June 13, 2016
Tool Type
Trimmer
Difficulty
Easy
Time
15-30 minutes
Tools Used
, None
Just removed the old broken parts and installed the new parts. Everything was quite simple and it works great.
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Spring sprung and couldn't locate its landing.
Martha - July 5, 2016
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Pliers
Parts Used
1. Used channel lock pliers to get cap off
2. Took off the cap.
3. Replaced spring and cap,
4. Continued to use the trimmer.
2. Took off the cap.
3. Replaced spring and cap,
4. Continued to use the trimmer.
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Lost parts
Hector - May 31, 2016
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, none
Parts Used
Remove the spool from the trimmer then install the spring into the top of the spool and press the spool in, then thread the cap on.
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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.
