Troybilt
Gas Walk-Behind Mower

Model # 12A-466N063 Official Troybilt lawn mower

Here are the diagrams and repair parts for Official Troybilt 12A-466N063 lawn mower, as well as links to manuals and error code tables, if available.

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ALL PARTS
Showing 10 of 125 parts  |

Blade-21" Mu 742-0741
#65

21" 3-in-1 smart-speed 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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Lawn Tractor Screw (replaces 01000628, 01000865, 1186307, 1186308, 791-180288, 791-683298, 910-0599) 710-0599
#102

21" 3-in-1 smart-speed mower diagram

Lawn tractor screw (replaces 01000628, 01000865, 1186307, 1186308, 791-180288, 791-683298, 910-0599)

Part #710-0599

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This item is not returnable
$4.91
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Complete Wheel 734-2004A
#35

21" 3-in-1 smart-speed mower diagram

Complete wheel

Part #734-2004A

Replaced by #753-08093

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Manufacturer substitution
This part replaces 734-2004A. Substitute parts can look different from the original.
$56.63
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Lawn Mower Ground Drive Belt, 3/8 X 31-1/4-in 954-0637A
#48

21" 3-in-1 smart-speed mower diagram

Lawn mower ground drive belt, 3/8 x 31-1/4-in

Part #954-0637A

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Lawn & Garden Equipment Hex Bolt (replaces 01000943, 910-1257) 710-1257
#77

21" 3-in-1 smart-speed mower diagram

Lawn & garden equipment hex bolt (replaces 01000943, 910-1257)

Part #710-1257

This item is not returnable
$9.85
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Lawn & Garden Equipment Screw 710-1017
#30

21" 3-in-1 smart-speed mower diagram

Lawn & garden equipment screw

Part #710-1017

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$12.71
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Cable Tie 726-0240
#42

21" 3-in-1 smart-speed 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
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Lawn & Garden Equipment Shoulder Screw 710-1650
#55

21" 3-in-1 smart-speed mower diagram

Lawn & garden equipment shoulder screw

Part #710-1650

This item is not returnable
$5.95
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Lawn Mower Drive Pinion Gear 717-1761
#69A

21" 3-in-1 smart-speed mower diagram

Lawn mower drive pinion gear

Part #717-1761

This item is not returnable
In Stock
Lawn & Garden Equipment Keeper Pin 711-1293
#57

21" 3-in-1 smart-speed mower diagram

Lawn & garden equipment keeper pin

Part #711-1293

In Stock

Symptoms for gas walk-behind mowers

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

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

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

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…

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 replace a lawn mower transmission

How to replace a lawn mower transmission

Learn how to replace the transmission on your lawn mower if it's locked up or won't drive the wheels.…

Repair difficulty
Time required
 60 minutes or less
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.…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower ignition coil on a flathead engine

How to replace a lawn mower ignition coil on a flathead engine

If the spark plug doesn't fire when you try to start the mower, you could have a defective ignition coil. Follow these s…

Repair difficulty
Time required
 30 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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Tapping into a new feature in the Search Bar on Sears PartsDirect

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Introducing new technical repair content that we’re developing for the Sears Technical Institute

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