Craftsman
Lawn & Garden Engine

Model # 143351012 Official Craftsman 4-cycle engine

Here are the diagrams and repair parts for Official Craftsman 143351012 4-cycle engine, as well as links to manuals and error code tables, if available.

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Showing 10 of 135 parts  |

Lawn Mower O-ring 631028
#25

Replacement parts 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 35078
#51

Replacement parts diagram

Spark plug

Part #35078

Replaced by #J19LM

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Manufacturer substitution
This part replaces 35078. Substitute parts can look different from the original.
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Needle Seat 631021
#12

Replacement parts diagram

Needle seat

Part #631021

Replaced by #631021B

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Manufacturer substitution
This part replaces 631021. Substitute parts can look different from the original.
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Lawn & Garden Equipment Engine Recoil Starter Rope, 98-in (replaces 1258, 28288, 28358, 28528, 30971, 31285, 31395, 31396, 31696, 590451a, 590456, 590527, 730608, 740032) 590535
#9

Rewind starter diagram

Lawn & garden equipment engine recoil starter rope, 98-in (replaces 1258, 28288, 28358, 28528, 30971, 31285, 31395, 31396, 31696, 590451a, 590456, 590527, 730608, 740032)

Part #590535

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Lamination 34443A
#90

Replacement parts diagram

Lamination

Part #34443A

Replaced by #34443D

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Manufacturer substitution
This part replaces 34443A. Substitute parts can look different from the original.
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Line 34357
#105

Replacement parts diagram

Line

Part #34357

Replaced by #29774

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Manufacturer substitution
This part replaces 34357. Substitute parts can look different from the original.
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Troybilt Lawn & Garden Equipment Engine Air Filter Collar Gasket 34338
#108

Replacement parts diagram

Troybilt lawn & garden equipment engine air filter collar gasket

Part #34338

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Float 632019
#14

Replacement parts 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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Troybilt Lawn & Garden Equipment Engine Oil Seal 27897
#26

Replacement parts diagram

Troybilt lawn & garden equipment engine oil seal

Part #27897

This item is not returnable
$7.02
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Primer Assembly 632047
#9

Replacement parts diagram

Primer assembly

Part #632047

Replaced by #632047A

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Manufacturer substitution
This part replaces 632047. Substitute parts can look different from the original.
This item is not returnable
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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.…