Part Location Diagram of 791-181807 MTD Trigger
See part B-3 in the diagram
Replacing your MTD Trimmer Trigger
( Grid squares measure 1x1 inch )

Trigger 791-181807

Manufactured by:
MTD
ERP Number:
ERP9306549
Part Number:
791-181807
Original Equipment Manufacturer ?
  Works with your model  TB4000!
In Stock
Delivers in 3-5 Business Days!

Easy 

15 - 30 mins 

(13 rated repairs) ?
  Works with your model   TB4000!

Product Description

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This is an authentic part that is supplied directly by the original equipment manufacturer for Craftsman trimmers. The trigger allows you to control engine speed, which in turn permits you to safely control the speed of the trimmer line. This part is made of plastic and is sold individually. For installation, you will need a screwdriver and a pair of needle nose pliers to aid you.

Troubleshooting

This part works with the following brands:
  • MTD
  • Ryobi
  • Bolens
  • Craftsman
  • Yard Machines
  • Cub Cadet
  • Yard Man
  • Troy-Bilt
This part works with the following products:
  • Trimmer
Part# 791-181807 replaces these:
791-180975, 791-181556, 791-181807,

Videos For installing this part.

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Replacing your Trigger

Customer Part Reviews

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4.0
Average Rating (out of 5):
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(4 Reviews)
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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.

Easy 

15 - 30 mins 

(13 rated repairs) ?
  • 1
  • 2
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Sorry, we couldn't find any existing installation instruction that matched.

Throttle trigger handle broken

Fred from LOUISVILLE, Kentucky

4 of 4 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
791-181807
Removed screws to expose the inner housing
Took out broken part
Installed new trigger
Replaced screws to secure housing
Very simple repair
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Broken trigger and clogged muffler causing no power after starting.

David from Burton, Michigan

2 of 2 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
791-181807, 753-05169
Replaced the trigger making sure to match spring to its exact replacement position. The muffler comes off easy with the removal of two screws. New screws and gasket come with the muffler so I installed the new muffler with them. After installing new muffler I had lots of revving power and the ease of a new trigger. Love It!
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Broken trigger, air filter, hand grip

timothy from walled lake, Michigan

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
I took out all of the screws from the handle where the trigger is located. I made sure how the spring and trigger were placed in the handle. I removed the broken trigger and took out the cable. I took the new trigger, put the cable in it and put it and the spring in the handle. And put the handle together. I used some soapy water to slid e on the grip. I took out the screws that hold the filter cover and took out the old filter and put in the new one. Then put the cover back on.
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Trigger broken off

Ronald from Oklahama, Oklahoma

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Nutdriver
Parts Used:
791-181807
R/R trigger.
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Trigger replacement

Thomas from Redmond, Oregon

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
1- 2 hours
Tools:
Pliers, Screw drivers, Socket set
1. Remove screws securing the trigger assembly.
2. Pull assembly apart.
3. Remove throttle cable and spring from broken trigger.
4. Attach new trigger and reassemble.
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Trigger broke replaced trigger

Billy from Fort Worth, Texas

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
791-181807
Replaced trigger started trimmer runs great I don\'t know what else to tell you it was simple.
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Broken tigger

Andrew from Toms River, New Jersey

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
791-181807
Removed plastic cover from trigger housing, replaced trigger, re-attached plastic housing. Perfect match, easy to do.
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Trigger broke.

David from Cowden, Illinois

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Parts Used:
791-181807
Remove the trigger housing took out the old part and put in the new part. Put housing back together.
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Broken throttle trigger

Jean from Wheeling, West Virginia

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Parts Used:
791-181807
Remove the screws from the throttle housing. Look close to see how the throttle trigger spring is attached. Remove the throttle cable from the broken trigger. Remove the broken throttle trigger and install the new one, install the throttle cable in the new trigger. Then assemble the housing. Done!
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Broken trigger and inner line spool

Gary from Stillwater, Minnesota

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Screw drivers
Parts Used:
791-181807, 791-181460B
Remove the screws from the handle assembly and separate. Make note how the spring is installed before removing it. Remove the trigger and spring and the throttle cable from the broken trigger. Place the throttle cable in the new trigger, then place the new lever and spring in the handle. Screw the handle back together. Unscrew the bump kn ob and remove it. Take the old spool out. Place the new spool in the housing, and thread some of the cutting line thru the eyelets. Thread the bump knob back on. And you\'re done.
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Model Cross Reference

This part works with the following models:
ERP Number: ERP9306549
Manufacturer Part Number: 791-181807
Brand Model Number Description
Ryobi 1079r Trimmer - Handheld Trimmer
Ryobi 1090R Trimmer - 4-Cycle Gas Trimmer
Ryobi 2075R Trimmer - 2-Cycle Gas Trimmer
Ryobi 2075RC Trimmer - 2-Cycle Gas Trimmer
Ryobi 2079r Trimmer - Handheld Trimmer
Ryobi 2090R Trimmer - 2-Cycle Gas Trimmer
Ryobi 2090RC Trimmer - 2-Cycle Gas Trimmer
Ryobi 2800M Trimmer - Trimmer
Yard Machines 2800MVP Trimmer - Trimmer
Ryobi 2800R Trimmer - Trimmer
Yard Machines 3100M Trimmer - Trimmer
Craftsman 316742140 Trimmer - Trimmer
Craftsman 316790101 Trimmer - Trimmer
Craftsman 316790112 Trimmer - Trimmer
Craftsman 316795000 Trimmer - Trimmer
Craftsman 316795001 Trimmer - Trimmer
Craftsman 316795002 Trimmer - Trimmer
Craftsman 316795010 Trimmer - Trimmer
Craftsman 316795030 Trimmer - Trimmer
Craftsman 316795060 Trimmer - Trimmer
Craftsman 316795110 Trimmer - Trimmer
Craftsman 316795220 Trimmer - Trimmer
Craftsman 316795230 Trimmer - Trimmer
Craftsman 316796150 Trimmer - Weedwacker Line Trimmer
Craftsman 316798220 Trimmer - Weedwacker
Craftsman 316798221 Trimmer - Trimmer
Craftsman 316798240 Trimmer - Trimmer
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