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MTD
Gas Walk-Behind Mower

Model # 12A-445C001 Official MTD lawn mower

Here are the diagrams and repair parts for Official MTD 12A-445C001 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 73 parts  |
Blade-21" Mu 742-0741
#24

Lawn mower diagram

Blade-21" mu

Part #742-0741

Replaced by #942-0741A

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Manufacturer substitution
This part replaces 742-0741. Substitute parts can look different from the original.
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$27.71 | 
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Yard Machines Lawn Tractor Flange Nut (replaces 00012173, Wd-129-103) 712-04065
#43

Lawn mower diagram

Yard machines lawn tractor flange nut (replaces 00012173, wd-129-103)

Part #712-04065

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$5.27 | 
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Knob 720-04072
#9

Lawn mower diagram

Knob

Part #720-04072

Replaced by #720-04072A

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Manufacturer substitution
This part replaces 720-04072. Substitute parts can look different from the original.
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Wing Nut 712-0397
#38

Lawn mower diagram

Wing nut

Part #712-0397

Replaced by #712-0397A

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Manufacturer substitution
This part replaces 712-0397. Substitute parts can look different from the original.
This item is not returnable
$5.22 | 
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Lawn & Garden Equipment Carriage Bolt (replaces 1186069, 583108, 706-101080, 706-10602-12, 791-182213) 710-0703
#12

Lawn mower 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 | 
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Cable Tie 726-0240
#11

Lawn mower diagram

Cable tie

Part #726-0240

Replaced by #726-0178

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Manufacturer substitution
This part replaces 726-0240. Substitute parts can look different from the original.
This item is not returnable
$2.16
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Lawn Mower Screw 710-04531
#14

Lawn mower diagram

Lawn mower screw

Part #710-04531

This item is not returnable
$7.77 | 
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Cable 746-04203
#50

Lawn mower diagram

Cable

Part #746-04203

Replaced by #946-04203

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Manufacturer substitution
This part replaces 746-04203. Substitute parts can look different from the original.
$58.30 | 
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Lawn Mower Grass Bag 664-04027
#8

Lawn mower diagram

Lawn mower grass bag

Part #664-04027

Replaced by #964-04007A

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Manufacturer substitution
This part replaces 664-04027. Substitute parts can look different from the original.
$143.25 | 
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V-belt 754-0637A
#51

Lawn mower diagram

V-belt

Part #754-0637A

Replaced by #954-0637A

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Manufacturer substitution
This part replaces 754-0637A. Substitute parts can look different from the original.
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$17.69 | 
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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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Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

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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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Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

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Repair difficulty
Time required
 60 minutes or less
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 15 minutes or less
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