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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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Model diagram and schematic

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ALL PARTS
Showing 10 of 139 parts  |
Bolt 710-0134
#44

Mower deck diagram

Bolt

Part #710-0134

Replaced by #710-0134

?
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
$7.06
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
$2.16
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
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
$6.29
In Stock
Cotter 714-0104
#1

Engine/throttle control diagram

Cotter

Part #714-0104

The manufacturer no longer makes this part, and there's no substitute part

Sholder Scrw 738-0141
#50

Mower deck diagram

Sholder scrw

Part #738-0141

Replaced by #938-0141

?
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.
$12.97
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.
$65.84
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

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

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Repair difficulty
Time required
 45 minutes or less

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