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Model # 12A-449T401 Official MTD gas lawn mower
Here are the diagrams and repair parts for Official MTD 12A-449T401 gas lawn mower, as well as links to manuals and error code tables, if available.
Owner’s manualBy Schematic
By Part
SELECT DIAGRAM
Browse Parts for
12A-449T401 Walk-Behind Mowers
Blade-21" mu
Part #742-0741
Replaced by #942-0741A
?
Manufacturer substitution
This part replaces 742-0741. Substitute parts can look different from the original.
Get free shipping with Automatic Reorder
$27.71 |
18% OFF Phone Price : $33.71
In Stock
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 screw
Part #710-0606
This item is not returnable
$8.21 |
11% OFF Phone Price : $9.21
In Stock
Yard-man lawn & garden equipment hex screw
Part #710-1256
This item is not returnable
$10.37
In Stock
Lawn mower drive pinion gear
Part #717-1762
This item is not returnable
$21.24 |
22% OFF Phone Price : $27.24
In Stock
Lawn tractor hex nut
Part #712-0271
This item is not returnable
$6.66 |
13% OFF Phone Price : $7.66
In Stock
Ryobi lawn & garden equipment nut
Part #712-0324
This item is not returnable
$4.72 |
17% OFF Phone Price : $5.72
In Stock
Dust cover wheel
Part #782-7551
Replaced by #782-7551A
?
Manufacturer substitution
This part replaces 782-7551. Substitute parts can look different from the original.
This item is not returnable
$6.76 |
13% OFF Phone Price : $7.76
In Stock
Oil seal
Part #721-0329
Replaced by #921-0329
?
Manufacturer substitution
This part replaces 721-0329. Substitute parts can look different from the original.
$17.66
Back Order
Lawn mower rear skirt wire rod
Part #732-0700
Replaced by #732P0700
?
Manufacturer substitution
This part replaces 732-0700. Substitute parts can look different from the original.
$7.63
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
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
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
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.
Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
Learn about the different kinds of mower blades and how to maintain them.…