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Model # 12A-445E452 Official MTD lawn mower
Here are the diagrams and repair parts for Official MTD 12A-445E452 lawn mower, as well as links to manuals and error code tables, if available.
There are a couple of ways to find the part or diagram you need:
- Click a diagram to see the parts shown on that diagram.
- 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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For DIY troubleshooting advice and repair guides, visit our repair help section.
Model diagram and schematic
SEARCH WITHIN THIS MODEL
ALL PARTS
Showing 10 of 118 parts |
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
$27.33 |
18% OFF Phone Price : $33.33
In Stock
#75
Handle/rear discharge deck/grass bag diagram
Bell support
Part #736-0524A
Replaced by #736-0524B-1
?
Manufacturer substitution
This part replaces 736-0524A. Substitute parts can look different from the original.
Get free shipping with Automatic Reorder
$6.78 |
13% OFF Phone Price : $7.78
In Stock
Knob wing nut
Part #720-0284
Replaced by #720-04072A
?
Manufacturer substitution
This part replaces 720-0284. Substitute parts can look different from the original.
$9.33 |
10% OFF Phone Price : $10.33
In Stock
#92
Handle/rear discharge deck/grass bag diagram
Wing nut
Part #712-0397
Replaced by #712-0397A
?
Manufacturer substitution
This part replaces 712-0397. Substitute parts can look different from the original.
This item is not returnable
$5.22 |
16% OFF Phone Price : $6.22
In Stock
#93
Handle/rear discharge deck/grass bag diagram
Lawn & garden equipment carriage bolt (replaces 1186069, 583108, 706-101080, 706-10602-12, 791-182213)
Part #710-0703
This item is not returnable
$6.46 |
13% OFF Phone Price : $7.46
In Stock
Complete wheel
Part #734-2005A
Replaced by #753-08093
?
Manufacturer substitution
This part replaces 734-2005A. Substitute parts can look different from the original.
$46.07 |
12% OFF Phone Price : $52.07
In Stock
Lawn tractor push cap
Part #726-0201
This item is not returnable
$10.56 |
16% OFF Phone Price : $12.56
In Stock
Aircap lawn & garden equipment hex screw
Part #710-0896
This item is not returnable
$5.22 |
16% OFF Phone Price : $6.22
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
Yard machines lawn mower throttle control housing
Part #746-0883
This item is not returnable
$21.96 |
21% OFF Phone Price : $27.96
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.…