Easy
15-30 minutes
This authentic item is supplied directly from the original equipment manufacturer for use with handheld trimmers. The flexible drive shaft is secured in the lower boom assembly in order to rotate the trimmer head. It provides an identical replacement for a missing or a faulty part that was installed on a new unit. Please make sure to check the appropriate diagrams of your model for the correct location and application of this hardware. Keep in mind this high-quality shaft is made of durable metal and is sold individually.
Lower Flexible Drive Shaft 791-181166
OEM part for: Ryobi, Troy-Bilt, Yard Man, Bolens, MTD, Cub Cadet
Part Number: 791-181166
$29.20
In Stock
Order within the next 4 hours and your part ships today! 
Compatibility
This part will fit the following 110 machines
Ryobi
775r (41AD775A734) Handheld Trimmer View Diagrams & Manuals
775r (41ADL05A734) Handheld Trimmer View Diagrams & Manuals
775r (41BD775A034) Handheld Trimmer View Diagrams & Manuals
775r (41BD775A734) Handheld Trimmer View Diagrams & Manuals
775r (41BD775B034) Handheld Trimmer View Diagrams & Manuals
775r (41BDL05A034) Handheld Trimmer View Diagrams & Manuals
775r (41CD775A034) Handheld Trimmer View Diagrams & Manuals
775r (41CD775B034) Handheld Trimmer View Diagrams & Manuals
775r (41DD775A034) Handheld Trimmer View Diagrams & Manuals
775r (41ED775A034) Handheld Trimmer View Diagrams & Manuals
775r (41FD775A034) Handheld Trimmer View Diagrams & Manuals
875r (41AD875A034) Handheld Trimmer View Diagrams & Manuals
875r (41AD875A734) Handheld Trimmer View Diagrams & Manuals
875r (41CD875A034) Handheld Trimmer View Diagrams & Manuals
890r (41CD890A034) Handheld Trimmer View Diagrams & Manuals
SS725r (41AJSS-A034) Handheld Trimmer View Diagrams & Manuals
SS725r (41AJSS-B034) Handheld Trimmer View Diagrams & Manuals
TP720r (41AJTP-A034) Handheld Tree Pruner View Diagrams & Manuals
TP720r (41AJTP-B034) Handheld Tree Pruner View Diagrams & Manuals
135PR (505000001) Pruner View Diagrams & Manuals
TP720R (41AJTPA054) Tree Pruner View Diagrams & Manuals
TP720R (41AJTPB054) Tree Pruner View Diagrams & Manuals
790PR (504231115) Pruner View Diagrams & Manuals
TP720R (505000001) Pruner View Diagrams & Manuals
TP720R (611000001) Pruner View Diagrams & Manuals
Troy-Bilt
TBPS-8 DL (41AJPS-C911) Attachment View Diagrams & Manuals
TBPS-8 DL (41AJPS-C966) Attachment View Diagrams & Manuals
TBSS (41AJSS-C063) Attachment View Diagrams & Manuals
TBSS (41AJSS-C711) Attachment View Diagrams & Manuals
TBSS (41AJSS-C766) Attachment View Diagrams & Manuals
TBTP (41AJTP-C063) Attachment View Diagrams & Manuals
TB475SS (41ADT47C711) Gas Trimmer View Diagrams & Manuals
TB475SS (41ADT47C766) Gas Trimmer View Diagrams & Manuals
TB475SS (41ADT47C966) Gas Trimmer View Diagrams & Manuals
TB475SS (41BDT47C063) Gas Trimmer View Diagrams & Manuals
TB70SS (41ADT70C711) Gas Trimmer View Diagrams & Manuals
TB70SS (41BDT70C711) Gas Trimmer View Diagrams & Manuals
TB75SS (41ADT75C063) Trimmer View Diagrams & Manuals
TB75SS (41ADT75C066) Trimmer View Diagrams & Manuals
TB75SS (41ADT75C763) Trimmer View Diagrams & Manuals
TB75SS (41ADT75C766) Trimmer View Diagrams & Manuals
TB75SS (41ADT75C966) Trimmer View Diagrams & Manuals
TB75SS (41BDT75C063) Trimmer View Diagrams & Manuals
TB75SS (41BDT75C766) Trimmer View Diagrams & Manuals
TB75SS (41CDT75C063) Trimmer View Diagrams & Manuals
TB475SS (41ADT47C063) Gas Trimmer View Diagrams & Manuals
TB70SS Gas Trimmer View Diagrams & Manuals
PS720R (41AJPS-C954) Pole Saw Attachment View Diagrams & Manuals
PS720R (41BJPS-C954) Pole Saw Attachment View Diagrams & Manuals
PS720R (41CJPS-C954) Pole Saw Attachment View Diagrams & Manuals
SS725r (41AJSS-A054) Speed Feed Attachment View Diagrams & Manuals
SS725r (41AJSS-B054) Speed Feed Attachment View Diagrams & Manuals
TP720r (41AJTP-A054) Pole Saw Attachment View Diagrams & Manuals
TP720r (41AJTP-B054) Pole Saw Attachment View Diagrams & Manuals
TP720r (41AJTP-C954) Pole Saw Attachment View Diagrams & Manuals
TB138PS (41AC138C966) Trimmer View Diagrams & Manuals
41AJTP-C063 (TBTP) Tree Pruner Attachment View Diagrams & Manuals
41AJTP-A054 (TP720R) Pruner Attachment View Diagrams & Manuals
41AJTP-B054 (TP720R) Pruner Attachment View Diagrams & Manuals
41AJSS-C063 (TBSS) String Trimmer Attachment View Diagrams & Manuals
41AJSS-C711 (TBSS) Pole Saw Attachment View Diagrams & Manuals
41AJSS-C766 (TBSS) Pole Saw Attachment View Diagrams & Manuals
Yard Man
YM137 (41AC137C701) Trimmer View Diagrams & Manuals
YM137 (41AC137C901) Trimmer View Diagrams & Manuals
YM21SS (41AD26SC701) Trimmer View Diagrams & Manuals
YM26SS (41AD26SC401) Trimmer View Diagrams & Manuals
YM26SS (41AD26SC901) Trimmer View Diagrams & Manuals
YM75 (41ADY75C401) Trimmer View Diagrams & Manuals
YM21SS 41ad26sc701 Gas String Trimmer View Diagrams & Manuals
YM75 41ady75c401 Gas String Trimmer View Diagrams & Manuals
Bolens
BL26SS 41AD26SC965 Gas String Trimmer View Diagrams & Manuals
BL26SS (41AD26SC965) Trimmer View Diagrams & Manuals
MTD
875R (2004) Gas Trimmer 41AD875A734 View Diagrams & Manuals
775R (41AD775A734) Trimmer View Diagrams & Manuals
775R (41ADL05A734) Trimmer View Diagrams & Manuals
775R (41BD775A034) Trimmer View Diagrams & Manuals
775R (41BD775A734 2004) Trimmer View Diagrams & Manuals
775R (41BD775B034) Trimmer View Diagrams & Manuals
775R (41BDL05A034) Trimmer View Diagrams & Manuals
775R (41CD775A034) Trimmer View Diagrams & Manuals
775R (41CD775B034) Trimmer View Diagrams & Manuals
775R (41DD775A034) Trimmer View Diagrams & Manuals
775R (41ED775A034) Trimmer View Diagrams & Manuals
775R (41FD775A034 2004) Trimmer View Diagrams & Manuals
875R (41AD875A034) Trimmer View Diagrams & Manuals
875R (41CD875A034) Trimmer View Diagrams & Manuals
SS725R (41AJSS-A034) Trimmer View Diagrams & Manuals
SS725R (41AJSS-B034) Trimmer View Diagrams & Manuals
TP720R (41AJTP-A034) Tree Pruner Attachment View Diagrams & Manuals
TP720R (41AJTP-B034) Tree Pruner Attachment View Diagrams & Manuals
CL25PS (41AJPS-C767) Attachment View Diagrams & Manuals
41AJPS-C799 Attachment View Diagrams & Manuals
41BJPS-C799 Attachment View Diagrams & Manuals
41ADZ3CC799 Trimmer View Diagrams & Manuals
PS720R (41AJPS-C902) Attachment View Diagrams & Manuals
PS720R (41AJPS-C954) Attachment View Diagrams & Manuals
PS720R (41BJPS-C954) Attachment View Diagrams & Manuals
PS720R (41CJPS-C954) Attachment View Diagrams & Manuals
Cub Cadet
PS720R (41BJPS-C954) Attachment View Diagrams & Manuals
PS720R (41CJPS-C954) Attachment View Diagrams & Manuals
TP720R (41AJTP-C954) Attachment View Diagrams & Manuals
CC4075 (41ADC47C712) Gas String Trimmer View Diagrams & Manuals
ST426C (41AD4C6C912) (2010) 41AD4C6C Gas String Trimmer View Diagrams & Manuals
ST227C (41BD2C7C912) (2011) 41BD2C7C Gas String Trimmer View Diagrams & Manuals
ST227S (41BD2S7C912) (2011) 41BD2S7C Gas String Trimmer View Diagrams & Manuals
ST426C (41CD4C6C912) (2011) 41CD4C6C Gas String Trimmer View Diagrams & Manuals
ST228 (41AD2S8C912) (2012) 41AD2S8C912 Gas String Trimmer View Diagrams & Manuals
ST228 (41AD2S8C912) (2013) 41AD2S8C912 Gas String Trimmer View Diagrams & Manuals
ST228 (41AD2S8C912) (2014) 41AD2S8C912 Gas String Trimmer View Diagrams & Manuals
ST228 (41AD2S8C912) (2015) 41AD2S8C912 Gas String Trimmer View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Trimmer Parts
- Pruner Parts
Customer Part Reviews ?
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PERFECT
Exact OEM part, got my trimmer back in action, best price I found for this part, quick super quick delivery. My Ryobi is good again for a bunch more years...E replacement parts ALWAYS comes through, with the parts ya need to keep stuff working...
carl -
May 9, 2023
Verified Purchase
easy install as expected
replacement part works extremely well and visually looks more robust than the OEM component that failed after several years of residential service
Guest -
August 22, 2020
Verified Purchase
Looked fine
Not what I needed, it was the upper that was broken.
Bruce -
August 22, 2022
Verified Purchase
t
t
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t days ago
Verified Purchase
eReplacementParts Team
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Questions & Answers ?
Our customer Service team is at the ready daily to answer your part and product questions.
Ask our Team
We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
Does this fit my product?Questions & Answers for Lower Flexible Drive Shaft
What is the length of this flex cable?
Lynette
asked on 2022-04-08
Hello Lynette, thank you for your question. The Flexible Cable number 791-181166 is 25 inches long. If you need help placing an order, customer service is open 7 days a week. Please feel free to give us a call. We look forward to hearing from you.
eReplacementParts Team April 08, 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.
Cable broke
Jeffery - November 18, 2016
👍 10 of 11 people found this instruction helpful
Tool Type
Trimmer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Power Drill, Torx bit
Parts Used
1. Remove lower portion of shaft tube at mid shaft quik-link and remove screw that secures opposite end of tube to the string head assembly. Flexible drive cable is inside tube, remove broken cable.
2. Remove torx screws from head assembly housing and split housing to access drive gears.
3. Remove broken end of flexible drive cable and clean out hub and gears. There will be broken bits that must be cleaned out.
4. Re-lube gears and ends of flexible drive shaft.
5. Re-set gears in housing, assemble housing, slide flexible drive cable end into top gear, slide cable into shaft tube, and attach tube to housing.
6. Attach lower unit to upper unit at quik- link, insuring flexible drive cable is inserted into collet.
2. Remove torx screws from head assembly housing and split housing to access drive gears.
3. Remove broken end of flexible drive cable and clean out hub and gears. There will be broken bits that must be cleaned out.
4. Re-lube gears and ends of flexible drive shaft.
5. Re-set gears in housing, assemble housing, slide flexible drive cable end into top gear, slide cable into shaft tube, and attach tube to housing.
6. Attach lower unit to upper unit at quik- link, insuring flexible drive cable is inserted into collet.
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Lower flex shaft broke after many years of use
Brian - September 2, 2018
👍 2 of 2 people found this instruction helpful
Tool Type
Trimmer
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, Wrench Set
Parts Used
I read on ereplacementparts what others did first
Removed trimmer guard
Removed gearbox at trimmer head (3 screws) and clamp
Removed 2 screws on the lower shaft
Cleaned all the old grease from the gears and bearings (inspect the gears, if chipped clean everything before reassembly)
Inserted new flex shaft from the bottom and reassembled in reverse order.
Nothing to it!
It took me a bit longer because I cleaned everything to insure bits of chipped gears were not present before reassembly.
Removed trimmer guard
Removed gearbox at trimmer head (3 screws) and clamp
Removed 2 screws on the lower shaft
Cleaned all the old grease from the gears and bearings (inspect the gears, if chipped clean everything before reassembly)
Inserted new flex shaft from the bottom and reassembled in reverse order.
Nothing to it!
It took me a bit longer because I cleaned everything to insure bits of chipped gears were not present before reassembly.
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Trimmer lower flexible shaft
John - August 17, 2016
👍 2 of 6 people found this instruction helpful
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Parts Used
Replaced lower flexible shaft.
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Thanks for voting and helping fellow customers!
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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.
