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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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
$19.05
10% OFF Phone Price : $21.05
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
Grip 01166
#2

Engine/throttle control diagram

Grip

Part #01166

Replaced by #720-0204

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Manufacturer substitution
This part replaces 01166. Substitute parts can look different from the original.
This item is not returnable
In Stock
Sholder Scrw 738-0141
#50

Mower deck diagram

Sholder scrw

Part #738-0141

Replaced by #938-0141

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Manufacturer substitution
This part replaces 738-0141. Substitute parts can look different from the original.
$9.54
9% OFF Phone Price : $10.54
In Stock
Bearing 748-0110
#66

Mower deck diagram

Bearing

Part #748-0110

Replaced by #748-0110

?
Manufacturer substitution
This part replaces 748-0110. Substitute parts can look different from the original.
In Stock
Bearing 748-0108
#70

Mower deck diagram

Bearing

Part #748-0108

Replaced by #948-0108

?
Manufacturer substitution
This part replaces 748-0108. Substitute parts can look different from the original.
In Stock
Key Hi Pro 714-0388
#56

Deck and pulley system diagram

Key hi pro

Part #714-0388

Replaced by #914-0388

?
Manufacturer substitution
This part replaces 714-0388. Substitute parts can look different from the original.
In Stock
Bearing Housing 741-0163
#23

Deck and pulley system diagram

Bearing housing

Part #741-0163

Replaced by #741-0163A

?
Manufacturer substitution
This part replaces 741-0163. Substitute parts can look different from the original.
In Stock
Hex Screw 710-0567
#25

Engine/throttle control diagram

Hex screw

Part #710-0567

Replaced by #910-0195

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Manufacturer substitution
This part replaces 710-0567. Substitute parts can look different from the original.
This item is not returnable
In Stock
Flat Grip 720-0142
#7

Engine/throttle control diagram

Flat grip

Part #720-0142

Replaced by #720-0142

?
Manufacturer substitution
This part replaces 720-0142. Substitute parts can look different from the original.
This item is not returnable
In Stock

Symptoms for gas walk-behind mowers

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

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

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

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

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

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

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

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.

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…

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. …

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…

Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your walk-behind mowers

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Introducing new technical repair content that we’re developing for the Sears Technical Institute

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Top questions about Sears and Sears PartsDirect

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