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MTD
Gas Walk-Behind Mower

Model # 129-459R000 Official MTD lawn mower

Here are the diagrams and repair parts for Official MTD 129-459R000 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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ALL PARTS
Showing 10 of 103 parts  |
Yard Machines Lawn & Garden Equipment Hex Bolt, 3/8-24 X 1-1/2-in (replaces 910-1044) 710-1044
#75

Lawn mower diagram

Yard machines lawn & garden equipment hex bolt, 3/8-24 x 1-1/2-in (replaces 910-1044)

Part #710-1044

BEST SELLER
This item is not returnable
$5.33 | 
16% OFF Phone Price : $6.33
In Stock
Lock Washer 736-0119
#14

Lawn mower diagram

Lock washer

Part #736-0119

Replaced by #936-0119

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Manufacturer substitution
This part replaces 736-0119. Substitute parts can look different from the original.
This item is not returnable
$6.05 | 
14% OFF Phone Price : $7.05
In Stock
Hex Nut 712-0267
#15

Lawn mower diagram

Hex nut

Part #712-0267

Replaced by #712-3010

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Manufacturer substitution
This part replaces 712-0267. Substitute parts can look different from the original.
$7.71
In Stock
Cable Tie 726-0240
#17

Lawn mower diagram

Cable tie

Part #726-0240

Replaced by #726-0178

?
Manufacturer substitution
This part replaces 726-0240. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Lawn & Garden Equipment Tap Screw 710-0227
Lawn & garden equipment tap screw

Part #710-0227

This item is not returnable
$5.47 | 
15% OFF Phone Price : $6.47
In Stock
Lawn & Garden Equipment Self-tapping Screw 710-0726
#32

Lawn mower diagram

Lawn & garden equipment self-tapping screw

Part #710-0726

Replaced by #710-0726

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Manufacturer substitution
This part replaces 710-0726. Substitute parts can look different from the original.
This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Spacer 750-0566
#38

Lawn mower diagram

Spacer

Part #750-0566

Replaced by #750-0566A

?
Manufacturer substitution
This part replaces 750-0566. Substitute parts can look different from the original.
This item is not returnable
$12.91 | 
13% OFF Phone Price : $14.91
In Stock
Sears Lawn & Garden Equipment Nut 712-0711
#42

Lawn mower diagram

Sears lawn & garden equipment nut

Part #712-0711

This item is not returnable
$6.17
In Stock
Craftsman Washer 736-0498
#92

Lawn mower diagram

Craftsman washer

Part #736-0498

This item is not returnable
$7.31
In Stock
Throttle Wire 746-0672
#12

Lawn mower diagram

Throttle wire

Part #746-0672

Replaced by #946-0674A

?
Manufacturer substitution
This part replaces 746-0672. Substitute parts can look different from the original.
$27.09
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 vibrate a lot?

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

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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 run rough?

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

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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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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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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 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.…

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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.…

Read more
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.…

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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.

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Types of walk-behind mower blades video

Types of walk-behind mower blades video

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