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MTD
Gas Walk-Behind Mower

Model # 125-570A Official MTD lawn mower

Here are the diagrams and repair parts for Official MTD 125-570A lawn mower, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

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Showing 10 of 139 parts  |
Bearing 741-0919
#43

Deck and pulley system diagram

Bearing

Part #741-0919

Replaced by #941-0919B

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Manufacturer substitution
This part replaces 741-0919. Substitute parts can look different from the original.
BEST SELLER
$19.64 | 
9% OFF Phone Price : $21.64
In Stock
Cap Screw 710-0258
#39

Deck and pulley system diagram

Cap screw

Part #710-0258

Replaced by #710-0751

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Manufacturer substitution
This part replaces 710-0258. Substitute parts can look different from the original.
This item is not returnable
$5.12 | 
16% OFF Phone Price : $6.12
In Stock
Housing 08253
#24

Deck and pulley system diagram

Housing

Part #08253

Replaced by #08253B

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Manufacturer substitution
This part replaces 08253. Substitute parts can look different from the original.
This item is not returnable
$4.11 | 
20% OFF Phone Price : $5.11
In Stock
Hex Screw 710-0459
#32

Deck and pulley system diagram

Hex screw

Part #710-0459

Replaced by #710-0459A

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Manufacturer substitution
This part replaces 710-0459. Substitute parts can look different from the original.
This item is not returnable
$10.29
In Stock
Spring 732-0193
#12

Engine/throttle control diagram

Spring

Part #732-0193

Replaced by #732-0193

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Manufacturer substitution
This part replaces 732-0193. Substitute parts can look different from the original.
This item is not returnable
$7.28 | 
12% OFF Phone Price : $8.28
In Stock
Spring 732-0184
#62

Mower deck diagram

Spring

Part #732-0184

Replaced by #732-0184

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Manufacturer substitution
This part replaces 732-0184. Substitute parts can look different from the original.
$28.76
In Stock
Bearing 748-0110
#66

Mower deck diagram

Bearing

Part #748-0110

Replaced by #748-0110

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Manufacturer substitution
This part replaces 748-0110. Substitute parts can look different from the original.
$12.97
In Stock
Bell Wash 736-0105
Bell wash

Part #736-0105

Replaced by #736-0105

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Manufacturer substitution
This part replaces 736-0105. Substitute parts can look different from the original.
This item is not returnable
$6.29
In Stock
Hex Screw 710-0567
#25

Engine/throttle control diagram

Hex screw

Part #710-0567

Replaced by #910-0195

?
Manufacturer substitution
This part replaces 710-0567. Substitute parts can look different from the original.
This item is not returnable
$6.23
In Stock
Bearing 748-0108
#70

Mower deck diagram

Bearing

Part #748-0108

Replaced by #948-0108

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Manufacturer substitution
This part replaces 748-0108. Substitute parts can look different from the original.
$15.14
In Stock

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

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Why does my lawn mower run rough?

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

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Why does my lawn mower cut unevenly?

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

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Why does my lawn mower vibrate a lot?

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

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Why won't my lawn mower start?

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

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Why does my lawn mower stall?

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

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Why won't my lawn mower move?

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

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Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

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How to replace a lawn mower spark plug

How to replace a lawn mower spark plug

Take a few minutes to replace the spark plug during your lawn mower's annual tune-up or if the spark plug is burnt or cr…

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Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower blade

How to replace a lawn mower blade

Check your lawn mower blade regularly and replaced it if it's bent or damaged. …

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Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower flywheel key on a flathead engine

How to replace a lawn mower flywheel key on a flathead engine

When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to re…

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Repair difficulty
Time required
 45 minutes or less

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