Easy
Less than 15 minutes
This is a Troy-Bilt, MTD, Yard Machines, and Yard Man replacement part directly sourced from the manufacturer for use in lawn mowers. The extreme blade fits between the engine baffle and the bell blade support. It might require a wrench to replace this item. It may become bent or broken and will need to be replaced. This part is made of metal and is available individually.
Blade-21 Xtreme 742P0741-X
OEM part for: Craftsman, Troy-Bilt, MTD
Part Number: 742P0741-X
$25.45
In Stock
Ships within 1 business day 
Compatibility
This Blade-21 Xtreme will fit the following 189 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
This item works with the following types of products:
- Lawn Mower Parts
This part replaces obsolete part #: 942-04380, 942-0741-X
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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.
blade was dull
RICHARD - November 7, 2020
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Socket set
Parts Used
replaced the worn blade with a new blade
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My old lawn mower blade got chipped
Albert - February 27, 2021
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Socket set, Block of wood and hammer
Parts Used
Disconnected spark plug, replaced spark plug with new one, kept it disconnected.
Un-capped gas tank, placed ziploc bag over gas tank opening, screwed gas tank cap back on.
Tilted mower on its side, air filter up.
Wedged block of wood between a bolt on the underside of the mower deck and the old mower blade such that when I loosen the mower blade bolt in a counter-clockwise direction.
The blade bolt is tight, so I used a 5/8" socket and ratchet wrench and hit wrench in counter clockwise direction to loosen the bolt a bit, then removed bolt using socket wrench, there is a oblong washer between the bolt and blade that comes right off, it has two dimples that fit into two small holes on either side of the blade's bolt hole.
Removed old chipped mower blade and "washer", then installed new blade and "old" washer onto "axle" that the bolt screws into, making sure the "washer's" dimples are aligned with the two small holes on either side of the new blade's bolt hole.
Finger tightened the bolt, then I tightened the blade bolt fairly hand-tight, then I researched what the required torque necessary for the blade to be safely tightened,
using a torque wrench, I tightened the blade bolt to 42 ft. pounds. which is right in the middle of what's required by my Troybilt manufacturer's specs.
I change out my air filter, spark plug, and blade about once a year with each growing season.
Un-capped gas tank, placed ziploc bag over gas tank opening, screwed gas tank cap back on.
Tilted mower on its side, air filter up.
Wedged block of wood between a bolt on the underside of the mower deck and the old mower blade such that when I loosen the mower blade bolt in a counter-clockwise direction.
The blade bolt is tight, so I used a 5/8" socket and ratchet wrench and hit wrench in counter clockwise direction to loosen the bolt a bit, then removed bolt using socket wrench, there is a oblong washer between the bolt and blade that comes right off, it has two dimples that fit into two small holes on either side of the blade's bolt hole.
Removed old chipped mower blade and "washer", then installed new blade and "old" washer onto "axle" that the bolt screws into, making sure the "washer's" dimples are aligned with the two small holes on either side of the new blade's bolt hole.
Finger tightened the bolt, then I tightened the blade bolt fairly hand-tight, then I researched what the required torque necessary for the blade to be safely tightened,
using a torque wrench, I tightened the blade bolt to 42 ft. pounds. which is right in the middle of what's required by my Troybilt manufacturer's specs.
I change out my air filter, spark plug, and blade about once a year with each growing season.
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Had to replace the blade
Bill - June 14, 2019
👍 0 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Socket set
Parts Used
Removed the old blade and replaced with the new one, which has done very well.
Did you find this story helpful?
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.
