MTD
Gas Walk-Behind Mower

Model #12A-26JC006 Official MTD lawn mower

Here are the diagrams and repair parts for MTD 12A-26JC006 lawn mower, as well as links to manuals and error code tables, if available.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual

Showing 10 of 60 parts

Lawn Mower Blade Support (replaces 936-0524A)#37

Lawn mower Diagram

Lawn mower blade support (replaces 936-0524a)

Part #736-0524B
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Lawn & Garden Equipment Nut#11

Lawn mower Diagram

Lawn & garden equipment nut

Part #712-04064
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MSRP: $5.00
Lawn Tractor Flange Nut (replaces 00012173, WD-129-103)#20

Lawn mower Diagram

Lawn tractor flange nut (replaces 00012173, wd-129-103)

Part #712-04065
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Lawn Mower Handle Knob (replaces 01000382, 113589, 720-04072, 720-04125)#12

Lawn mower Diagram

Lawn mower handle knob (replaces 01000382, 113589, 720-04072, 720-04125)

Part #720-04072A
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Lawn Mower Wheel#57

Lawn mower Diagram

Lawn mower wheel

Part #734-1987
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Lawn Mower 22-in Deck Mulching Blade (replaces 742-0742A, 742-0742A-0637, 942-0742, OEM-742-0742)#33

Lawn mower Diagram

Lawn mower 22-in deck mulching blade (replaces 742-0742a, 742-0742a-0637, 942-0742, oem-742-0742)

Part #942-0742A
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Lawn & Garden Equipment Wing Nut (replaces 01002925, 920-0279)#7

Lawn mower Diagram

Lawn & garden equipment wing nut (replaces 01002925, 920-0279)

Part #720-0279
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Lawn & Garden Equipment Guide Bolt#6

Lawn mower Diagram

Lawn & garden equipment guide bolt

Part #710-1205
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Lawn Mower Bail Control Bar (replaces 747-1161A)#2

Lawn mower Diagram

Lawn mower bail control bar (replaces 747-1161a)

Part #747-1161A-0637
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Lawn Mower Screw#56

Lawn mower Diagram

Lawn mower screw

Part #710-04531
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Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade
Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up
Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent
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, bad ignition coil

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.

March 1, 2016
By Lyle Weischwill
How to replace a lawn mower spark plug

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 cracked.

Repair difficulty
Time required
 15 minutes or less
March 1, 2016
By Lyle Weischwill
How to replace a lawn mower blade

Check your lawn mower blade regularly and replaced it if it's bent or damaged.

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower flywheel key on a flathead engine

When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to replace this tiny but essential part.

Repair difficulty
Time required
 45 minutes or less

Articles and videos common to all walk-behind mowers

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

February 11, 2023

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By Lyle Weischwill

Learn about the top 10 must-have electric lawn & garden tools for 2023

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By Lyle Weischwill

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.

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Tapping into a new feature in the Search Bar on Sears PartsDirect

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Learn about a new feature added to the Search Bar on Sears PartsDirect