Craftsman
Lawn & Garden Engine

Model # 143790012 Official Craftsman 4-cycle engine

Here are the diagrams and repair parts for Official Craftsman 143790012 4-cycle engine, 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 197 parts  |

Lawn & Garden Equipment Torx Screw 30063
#82

Replacement parts diagram

Lawn & garden equipment torx screw

Part #30063

This item is not returnable
$2.49
29% OFF Phone Price : $3.49
In Stock
Troybilt Lawn & Garden Equipment Screw 650451
#34

Replacement parts diagram

Troybilt lawn & garden equipment screw

Part #650451

This item is not returnable
In Stock
Lauson Lawn & Garden Equipment Engine Starter Pinion Gear Retainer Ring 33842
#2

Starter motor diagram

Lauson lawn & garden equipment engine starter pinion gear retainer ring

Part #33842

This item is not returnable
In Stock
Lawn & Garden Equipment Engine Recoil Starter Pulley 31980
#123

Replacement parts diagram

Lawn & garden equipment engine recoil starter pulley

Part #31980

In Stock
Valve Spring 33507
#23

Replacement parts diagram

Valve spring

Part #33507

This item is not returnable
In Stock
Lauson Gear 33844
#5

Starter motor diagram

Lauson gear

Part #33844

In Stock
Cook Top Side Trim Kit Retaining Ring 29193
#38

Replacement parts diagram

Cook top side trim kit retaining ring

Part #29193

This item is not returnable
In Stock
Washer 35479
#29

Replacement parts diagram

Washer

Part #35479

Replaced by #651080

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Manufacturer substitution
This part replaces 35479. Substitute parts can look different from the original.
This item is not returnable
In Stock
Walton Screw 632449
#16

Replacement parts diagram

Walton screw

Part #632449

This item is not returnable
In Stock
Tractor Accessories Gasket 632447
#12

Replacement parts diagram

Tractor accessories gasket

Part #632447

This item is not returnable
In Stock

Symptoms for gas walk-behind mowers

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

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…

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…

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

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 spark plug

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 cr…

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower blade

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

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 re…

Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your lawn & garden engines

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

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

What are the main components of a lawn mower?

What are the main components of a lawn mower?

Learn about the main parts of a lawn mower and when to replace parts.…