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  |

Bolt 710-0134
#44

Mower deck diagram

Bolt

Part #710-0134

Replaced by #710-0134

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Manufacturer substitution
This part replaces 710-0134. Substitute parts can look different from the original.
This item is not returnable
$6.55
13% OFF Phone Price : $7.55
In Stock
Stop Nut 712-0429
Stop nut

Part #712-0429

Replaced by #712-0429

?
Manufacturer substitution
This part replaces 712-0429. Substitute parts can look different from the original.
This item is not returnable
In Stock
Lift Bracket Pin 711-0332
#21

Deck and pulley system diagram

Lift bracket pin

Part #711-0332

Replaced by #911-0332

?
Manufacturer substitution
This part replaces 711-0332. Substitute parts can look different from the original.
This item is not returnable
$18.97
10% OFF Phone Price : $20.97
In Stock
Palnut 726-0106
#1

Deck and pulley system diagram

Palnut

Part #726-0106

Replaced by #726-0106

?
Manufacturer substitution
This part replaces 726-0106. Substitute parts can look different from the original.
This item is not returnable
In Stock
Bell Wash 736-0105
Bell wash

Part #736-0105

Replaced by #736-0105

?
Manufacturer substitution
This part replaces 736-0105. Substitute parts can look different from the original.
This item is not returnable
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 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
Hex Screw 710-0459
#32

Deck and pulley system diagram

Hex screw

Part #710-0459

Replaced by #710-0459A

?
Manufacturer substitution
This part replaces 710-0459. Substitute parts can look different from the original.
This item is not returnable
In Stock
Bearing 741-0919
#43

Deck and pulley system diagram

Bearing

Part #741-0919

Replaced by #941-0919B

?
Manufacturer substitution
This part replaces 741-0919. Substitute parts can look different from the original.
$19.64
9% OFF Phone Price : $21.64
In Stock

Symptoms for gas walk-behind mowers

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

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

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

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

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

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…

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 rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

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

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…

Repair difficulty
Time required
 15 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.

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

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.…

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

Types of walk-behind mower blades video

Types of walk-behind mower blades video

Learn about the different kinds of mower blades and how to maintain them.…