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Repair Parts Home  Lawn Equipment Parts  Ryobi Parts  791-181468B Bump Feed Knob

Bump Feed Knob

Part Number: 791-181468B
RyobiMTDTroy-BiltYard ManBolens

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*This part replaces obsolete part #: 181468 and 791-181468.

Description:
This is an OEM replacement part,it is sold individually.
The Bumper Head Knob is the part of the trimmer that when struck on the ground, advances the trimmer line in the spool.

To remove the Bumper Head Knob, thread it off the spindle of the gear box assembly.

Product Information
Manufacturer: Ryobi, MTD, Troy-Bilt, Yard Man, Bolens
Product Number: 791-181468B
Classification: Part
Weight: 0.09 lbs.
Also Known As: Bump Cap, Bump Cover, Spool Cover, Bump Knob
Shipping: Ships Worldwide
Repair Guides
Articles:
How to Replace the Bump Head Knob Assembly on a Ryobi Trimmer
Step-by-step instructions for removing and installing the bump head knob assembly on a Ryobi trimmer....
September 21, 2015
Related Products
Compatibility

This part is compatible with the following machines:

Ryobi
MTD
Troy-Bilt
Yard Man
Bolens

Products Compatibility

This item works with the following types of products:

  • • Trimmer
Questions & Answers

No questions have been asked yet
Repair Instructions: Submitted by Customers Like You
9 of 10 people found this instruction helpful
Tool Type:
Trimmer
Parts Used:
Bump Feed Knob - 791-181468B
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Adjustable Wrench
Bump head wore out
Very easy fix. Unscrew old bump head and screw in new one.
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6 of 6 people found this instruction helpful
Tool Type:
Trimmer
Parts Used:
Bump Feed Knob - 791-181468B
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Pliers, small scraper, small brush
Bumper no longer worked. Did not extend far enough out, end worn out.
Unscrew the old one. Clean out the grass and dirt. Screw the new Bumper in.
Test the bumper. It took several bumps before it worked. It might be better
to clean out the entire trimmer head.
The only difficulty was grasping the old bumper to unscrew it. Wasn't much left of the old one.
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3 of 3 people found this instruction helpful
Tool Type:
Trimmer
Parts Used:
Bump Feed Knob - 791-181468B
Reel and Line Assembly - 791-181460B
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
, no tools required
Ryobi Bump Head Knob Assembly and Reel & Line assembly was worn out. Just needed new parts.
Just replaced the parts that I ordered and I was back in business with my electric Ryobi weed eater/edger. I've ordered these replacement parts before and have always been very pleased.
Thank you ereplacementparts.com
Just unscrew the old bumper and release the the spool, install the new spool and screw in the new bumper
A satisfied customer
Carol from Texas
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2 of 2 people found this instruction helpful
Tool Type:
Trimmer
Parts Used:
Bump Feed Knob - 791-181468B
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Screwdriver
The bump head knob had broken off
Removed broken part and replaced it with the replacement part. Just screwed off the old part and screwed on the new one. Works great now. Glad I found this site and didn't have to purchase a whole new trimmer head.
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2 of 2 people found this instruction helpful
Tool Type:
Trimmer
Parts Used:
Bump Feed Knob - 791-181468B
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Pliers
Bump head worn
Simply unthread the old worn one, then thread on the new one.
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1 of 1 people found this instruction helpful
Tool Type:
Trimmer
Parts Used:
Bump Feed Knob - 791-181468B
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
, Hands
Worn out bump knob.
Way to easy just screw it on.
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Thanks for voting and helping fellow customers!
Tool Type:
Trimmer
Parts Used:
Bump Feed Knob - 791-181468B
Reel and Line Assembly - 791-181460B
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Adjustable Wrench
Bump head wore out, fell apart and lost the spring.
Removed the old parts and put on the new parts and I was back in business.
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Thanks for voting and helping fellow customers!
Tool Type:
Trimmer
Parts Used:
Bump Feed Knob - 791-181468B
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
, Hand
Trimmer wouldn't feed line
Unscrewed old knob, installed new.
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Thanks for voting and helping fellow customers!
Tool Type:
Trimmer
Parts Used:
Bump Feed Knob - 791-181468B
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
, Hands
The bump knob was broken
Removed the old bump knob and installed the new bump knob
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Thanks for voting and helping fellow customers!
Tool Type:
Trimmer
Parts Used:
Small Speed Spool Spring - 791-181459
Plunger - 791-181462
Slider - 753-04257
Bump Feed Knob - 791-181468B
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Pliers, Snap ring pliers
Ratcheting line feed mechanism failed-line would unspool until empty
1.Cleaned entire hub interior.
2. Lubricated appropriate areas with light grease.
3. Installed replacement parts using snap ring and C-clip.
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Discussion
Discussion for Bump Feed Knob - ( 791-181468B )
Discussion is closed. To ask our experts a question about a part, use the Q&A feature.
Question: Bumphead Knob Assembly 791-18146...

pfinlay

The replacement part does not have the embedded nut to thread the knob onto the spindle, making the part useless.
Hi pfinlay Search around on ebay for possibly the part that has the embedded nut in it.
Question: Bump Knob

Ibby

I have a Ryobi 705r and the string went short then inside, how do I fix this? I tried taking the bump knob off but I can't seem to get it and every video I find just glosses over it, any ideas?
WJA
Hello Ibby,

If you can find a way to stop the spindle from turning, the 791-181468B Bump Head Knob Assembly, will thread right off.

-WJA
Question: 105r

Rocketpad

I have a Ryobi 105r that the bump head needs replaced. It says the one will work but it doesn't look like the original at all. The original is flater and has a screw coming out of the bottom. Can you confirm it will work before I order? Thanks
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