Lawn & Garden Engine

Model # 143274042 Official Craftsman 4-cycle engine

Here are the diagrams and repair parts for Official Craftsman 143274042 4-cycle engine, as well as links to manuals and error code tables, if available.

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143274042 4-Cycle Engine
Generac Lawn & Garden Equipment Engine Fuel Line (replaces 14306, 34357) 29774
#114

Replacement parts diagram

Generac lawn & garden equipment engine fuel line (replaces 14306, 34357)

Part #29774

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$5.99
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Carburetor 631840
Carburetor

Part #631840

Replaced by #632795A

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Manufacturer substitution
This part replaces 631840. Substitute parts can look different from the original.
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Troybilt Lawn & Garden Equipment Engine Fuel Line Clamp 26460
#103

Replacement parts diagram

Troybilt lawn & garden equipment engine fuel line clamp

Part #26460

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$2.49
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Fuel Fitting 631775
#26

Carburetor diagram

Fuel fitting

Part #631775

Replaced by #632527

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Manufacturer substitution
This part replaces 631775. Substitute parts can look different from the original.
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$9.59
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Troybilt Carburetor Float 631024
#15

Carburetor diagram

Troybilt carburetor float

Part #631024

This item is not returnable
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Drain Plug 27244
#28

Replacement parts diagram

Drain plug

Part #27244

Replaced by #36083

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Manufacturer substitution
This part replaces 27244. Substitute parts can look different from the original.
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$7.89
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Flange Gasket 26750A
#24

Replacement parts diagram

Flange gasket

Part #26750A

Replaced by #37609

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Manufacturer substitution
This part replaces 26750A. Substitute parts can look different from the original.
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Starter Handle 590452
#7

Rewind starter diagram

Starter handle

Part #590452

Replaced by #590701

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Manufacturer substitution
This part replaces 590452. Substitute parts can look different from the original.
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$7.80
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Lauson Lawn & Garden Equipment Engine Ignition Coil (replaces 29632, 30546, 30560) 30560A
#13

Magneto diagram

Lauson lawn & garden equipment engine ignition coil (replaces 29632, 30546, 30560)

Part #30560A

$47.09
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Carburetor Lawn & Garden Equipment Engine Gasket 27554
#18

Carburetor diagram

Carburetor lawn & garden equipment engine gasket

Part #27554

This item is not returnable
$2.49
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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.…