Craftsman
Lawn & Garden Engine

Model # 143976250 Official Craftsman engine

Here are the diagrams and repair parts for Official Craftsman 143976250 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 151 parts  |

Lawn Mower O-ring 631028
#29

Carburetor 632747 (71/143) 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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Lawn & Garden Equipment Engine Air Filter (replaces 490-200-0021, Taf-128, Tc-36905) 36905
#245

Replacement parts diagram

Lawn & garden equipment engine air filter (replaces 490-200-0021, taf-128, tc-36905)

Part #36905

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Needle Seat 631021
#30

Carburetor 632747 (71/143) 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
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
#100

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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Generac Lawn & Garden Equipment Engine Fuel Line (replaces 14306, 34357) 29774
#290

Replacement parts diagram

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

Part #29774

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Cap 36246
#301

Replacement parts diagram

Cap

Part #36246

Replaced by #37844

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Manufacturer substitution
This part replaces 36246. Substitute parts can look different from the original.
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Troybilt Lawn & Garden Equipment Engine Air Filter Collar Gasket 34338
#239

Replacement parts diagram

Troybilt lawn & garden equipment engine air filter collar gasket

Part #34338

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Tractor Accessories Lawn & Garden Equipment Engine Recoil Starter (replaces 590637, 590702) 590739
#0

Starter 590739 div 71/143 diagram

Tractor accessories lawn & garden equipment engine recoil starter (replaces 590637, 590702)

Part #590739

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Starter 590702
Starter

Part #590702

Replaced by #590739

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Manufacturer substitution
This part replaces 590702. Substitute parts can look different from the original.
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Symptoms for gas pressure washers

Choose a symptom to see related pressure washer repairs.

Main causes: using a high-pressure spray tip when applying detergent, clogged siphon tube, chemical injection system fai…

Main causes: overfilling engine with oil, improper fuel/air mixture, choke system problems, dirty carburetor, engine nee…

Main causes: broken recoil spring, damaged recoil starter…

Main causes: dirty air filter, stale fuel, clogged or dirty carburetor, bad unloader valve…

Main causes: insufficient water supply, clogged water inlet screen, clogged pressure hose, faulty pump check valves, stu…

Main causes: damaged recoil starter, oil inside cylinder, locked up engine piston…

Main causes: faulty unloader valve, bad pressure regulator…

Main causes: stale fuel, gummed up carburetor, engine needs tune up, throttle and choke controls need adjustment, bad re…

Main causes: pump running for more than 5 minutes when the spray wand isn't being used, faulty pressure relief valve, ba…

Repair guides for gas pressure washers

These step-by-step repair guides will help you safely fix what’s broken on your pressure washer.

How to install a pressure washer check valve kit

How to install a pressure washer check valve kit

Air in the inlet water supply can damage the check valves. If the pump won’t build up pressure due to damaged check valv…

Repair difficulty
Time required
 120 minutes or less
How to install a pressure washer O-ring kit

How to install a pressure washer O-ring kit

O-rings seal fittings on the pressure washer pump. Damaged seals allow water to leak from the pump. Follow these steps t…

Repair difficulty
Time required
 45 minutes or less
How to install a pressure washer chemical injection kit

How to install a pressure washer chemical injection kit

The chemical injection valve draws detergent into the pump. If it’s not drawing detergent, use a repair kit to replace t…

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 pressure washer.

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.…