Craftsman
Lawn & Garden Engine

Model # 143754102 Official Craftsman 4-cycle engine

Here are the diagrams and repair parts for Official Craftsman 143754102 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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Showing 10 of 170 parts  |

Lawn Mower O-ring 631028
#25

Carburetor 632378 diagram

Lawn mower o-ring

Part #631028

Replaced by #631028A

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Manufacturer substitution
This part replaces 631028. Substitute parts can look different from the original.
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Spark Plug 33636
#37

Solid state ignition diagram

Spark plug

Part #33636

Replaced by #J19LM

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Manufacturer substitution
This part replaces 33636. Substitute parts can look different from the original.
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$4.80
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Spark Plug 34251
#37A

Solid state ignition diagram

Spark plug

Part #34251

Replaced by #J19LM

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Manufacturer substitution
This part replaces 34251. Substitute parts can look different from the original.
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Troybilt Lawn & Garden Equipment Engine Carburetor Gasket (replaces 27141) 26756
#87

Solid state ignition diagram

Troybilt lawn & garden equipment engine carburetor gasket (replaces 27141)

Part #26756

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Gasket 27110
#21

Carburetor 632378 diagram

Gasket

Part #27110

Replaced by #27110A

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Manufacturer substitution
This part replaces 27110. Substitute parts can look different from the original.
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Troybilt Lawn & Garden Equipment Engine Fuel Line Clamp 26460
#119

Solid state ignition diagram

Troybilt lawn & garden equipment engine fuel line clamp

Part #26460

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Lawn & Garden Equipment Engine Fuel Line (replaces 32180, 32180a, 32180b, 500236, Tc-32180c) 32180C
#128

Solid state ignition diagram

Lawn & garden equipment engine fuel line (replaces 32180, 32180a, 32180b, 500236, tc-32180c)

Part #32180C

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Lawn & Garden Equipment Engine Throttle Control Knob 35440
#52

Solid state ignition diagram

Lawn & garden equipment engine throttle control knob

Part #35440

This item is not returnable
$4.14
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Float 632019
#14

Carburetor 632378 diagram

Float

Part #632019

Replaced by #632019A

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Manufacturer substitution
This part replaces 632019. Substitute parts can look different from the original.
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$8.89
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Troybilt Lawn & Garden Equipment Engine Oil Seal 27897
#24

Solid state ignition diagram

Troybilt lawn & garden equipment engine oil seal

Part #27897

This item is not returnable
$7.02
12% OFF Phone Price : $8.02
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Symptoms for gas walk-behind mowers

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

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

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, ba…

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

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 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 recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

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

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…

Repair difficulty
Time required
 15 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.…