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LT50 mower. Manual shows 942-05052A blades needed. They are 18”, and to long for the deck. the old ones are 17”. Anyone have any idea why the recommended blades do not fit?

what is the model number of your mower?

Are you sure they didn't send you 942-05056A blades

Just found the 942-05052A that I received in May and they are 17.25" diagonally measured. The 942-05056A (also in stock) are 18.25" diagonally measured.

Genuine part will have it's number stamped into the top of the blade.
Aftermarket blades usually stamp on the bottom along with the words "Grass Side"

bertsmobile1 said:

Genuine part will have it's number stamped into the top of the blade.
Aftermarket blades usually stamp on the bottom along with the words "Grass Side"

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Then are you saying my MTD distributor sending out fake blades as Genuine MTD as the stamp info is on the grass side? It is the same on the 942-05052A

Interesting .
All of the original blades I have fitted for anything were stamped on the top
All of the aftermarket blades were stamped on the bottom
I had assumed that original blades are likely to be fitted by a dealer who should know which way the blades go .
Now you are going to force me to check every blade to see If I have been delluding myself

I could go out in the morning and check the Husqvarna blades but I am not right now as it is raining and lightning. Most of the other OEM mowers here are fitted with Oregon, Rotary, and A&I XHT blades.

bertsmobile1 said:

Interesting .
All of the original blades I have fitted for anything were stamped on the top
All of the aftermarket blades were stamped on the bottom
I had assumed that original blades are likely to be fitted by a dealer who should know which way the blades go .
Now you are going to force me to check every blade to see If I have been delluding myself

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have you been installing the blades up side down...

Scrubcadet10 said:

have you been installing the blades up side down...

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If he is they won't need sharpening for a very long time....And if he counting on a dealer to know what he is doing he is kidding himself.

This is one of those times when the mower’s model number and serial number come into play.

Scrubcadet10 said:

what is the model number of your mower?
View attachment 57714

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Model number is 13AQA1CZ056

StarTech said:

Are you sure they didn't send you 942-05056A blades

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I’ll check that. Thanks

Based on you mower’s model number, your mower requires a 17.25” blade with a 6 point star center hole.
Here are the Rotary brand numbers: https://www.rotarycorp.com/search?q=&l=15&p=1&s=relevance&pr=,&f=class:15;dimension:2_17.2500_1,4_6 POINT STAR_0
Stens: https://www.stens.com/products/blades/lawnmower-blades/center-hole/6-pt.-star/lengthus/17-1-SLASH-4"
Note: This information applies only if that is the model number on the mower and NOT on your operators manual. Mower blades are measured diagonally.

If one were to put the blades on backward,does it put grass BACK on the lawn? ?

Alan199 said:

LT50 mower. Manual shows 942-05052A blades needed. They are 18”, and to long for the deck. the old ones are 17”. Anyone have any idea why the recommended blades do not fit?

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Describe what part of the blade is not fitting.

Take pictures and post here.

Come on Slomo get your finger out of the light socket especially when electricity is on.


The key words are "they are too long". Sometimes being too long is a bad thing.

StarTech said:

Come on Slomo get your finger out of the light socket especially when electricity is on.

The key words are "they are too long". Sometimes being too long is a bad thing.

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I read that too. Thanks for retyping it.

I was thinking a bad stamping or someone pulled the wrong part. You know, simple human error? Guess on your street that never happens LOL.

slomo said:

I read that too. Thanks for retyping it.

I was thinking a bad stamping or someone pulled the wrong part. You know, simple human error? Guess on your street that never happens LOL.

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It does happen but I have learn to read and re-read things multiple times. as I do try my best to be as accurate as I can as others are depending on accurate info too.

In this case I am thinking someone pulled the wrong blades. It isn't like it hasn't happen a few times this year to me. Matter I got a few weeks ago air filters for saw blades. I do wonder if the other tech that got the saw blades actual tried using them as air filters.

Grasshopper blades and Toro blades are stamped on the grass side.

pilotbuddy said:

Grasshopper blades and Toro blades are stamped on the grass side.

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So are the Husqvarna blades as I just checked my stock of the Husqvarna OEM blades.