Easy
30-60 minutes
This part is available as an individual replacement. The upper shaft attaches to the compression spring. A screwdriver may be helpful when replacing this part. It is made of metal and will need to be replaced if it becomes broken or bent. This is an authentic OEM sourced item which is specially produced for use with Toro trimmers.
Upper Shaft Asm 308159030
OEM part for: Toro
Part Number: 308159030
$39.61
In Stock
Order within the next 4 hours and your part ships today! 
Compatibility
This part will fit the following 4 machines
Toro
51974 18in Straight Shaft Gas Trimmer View Diagrams & Manuals
51944 (2011) 25Cc Power Head View Diagrams & Manuals
51944 (2010) 25Cc Power Head View Diagrams & Manuals
51955 17in Curved-Shaft Gas Trimmer View Diagrams & Manuals
This item works with the following types of products:
- Trimmer Parts
This part replaces obsolete part #: 380159030, 308159015
Customer Part Reviews ?
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Perfect replacement and easy to install
I received this part quickly and it was really easy to replace and install the broken part. It was a smooth process from order to install. Glad to have a repaired and functioning powerhead.
Guest -
September 5, 2023
Verified Purchase
A little tricky to install take your time
I got my part pretty quick a little hard to install but I got it my second time getting something from you thanks
Michael -
June 6, 2020
Verified Purchase
Fairly easy repair
Received the part much sooner than expected, considering it was not an in stock item.
Guest -
July 18, 2019
Verified Purchase
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Verified Purchase
eReplacementParts Team
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Questions & Answers ?
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Does this fit my product?Questions & Answers for Upper Shaft Asm
Would this upper shaft fix this model toro weedeater?
Leo
for model number 51978-319000001 toro
asked on 2022-10-03
Hello Leo, Thank you for contacting us. We have researched the model you have provided and have found the part you are looking for is Part Number:308159025. Thank you for your inquiry, good luck with this repair!
eReplacementParts Team October 03, 2022
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.
Upper shaft breakage/ locked-dirty clutch
Eric - July 31, 2017
👍 6 of 6 people found this instruction helpful
Tool Type
Trimmer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Power Drill
Parts Used
I took it apart. Realized the tip of the upper shaft was broke off; this is what was rattling really bad while it was at idle. If finally snapped the head would not spin. I got the new Upper shaft assembly and put that back in. Note to self do not take apart the trigger assembly/handle. Not too fun to put back together. I put all back together and the head was barely turning. I knew I seated everything properly and then I thought maybe the clutch was bad. I took it apart again, this time I kept the handle assembly in tacked and just maneuvered the shaft accordingly side to side you know for better feel ;), and took the clutch out and cleaned it. There was a lot of metal debris and fine metal dust. This I believe was prohibiting the mechanism to spring out and grip the cup/rotor. I put it back together and BAM! started right up and smooth. Worth opening up and buying the part. I would have bought the clutch if I thought that was it and if that wasn't it I would've buried it. Not too bad of a lesson and now I have my weed trimmer back in action. I like it trimmed!
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Upper shaft (male end) shattered.
Charles - April 10, 2020
👍 1 of 1 people found this instruction helpful
Tool Type
Trimmer
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Nutdriver, Torx bits
Parts Used
Removed torx screws and shaft assembly. Slid new shaft in place. Reattached trigger assembly with kill switch. Started trimmer and away I went weed eating my lawn. Thanks guys.
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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.
