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Craftsman
Lawn & Garden Engine

Model # 143105121 Official Craftsman 4-cycle gas engine

Here are the diagrams and repair parts for Official Craftsman 143105121 4-cycle gas 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 231 parts  |
Gasket 27110
#20

Carburetor no. 29993 (lmg-154) diagram

Gasket

Part #27110

The manufacturer no longer makes this part, and there's no substitute part

Breather Element Air Filter 28424
#55

Basic engine diagram

Breather element air filter

Part #28424

The manufacturer no longer makes this part, and there's no substitute part

Gasket 27930
#91

Basic engine diagram

Gasket

Part #27930

The manufacturer no longer makes this part, and there's no substitute part

Gear Assembly 30117
#111

Basic engine diagram

Gear assembly

Part #30117

The manufacturer no longer makes this part, and there's no substitute part

Tube 27627
#57

Basic engine diagram

Tube

Part #27627

The manufacturer no longer makes this part, and there's no substitute part

Spool 30116
#113

Basic engine diagram

Spool

Part #30116

The manufacturer no longer makes this part, and there's no substitute part

Valve Spring 27881
#8

Basic engine diagram

Valve spring

Part #27881

The manufacturer no longer makes this part, and there's no substitute part

Needle 27112
#7

Carburetor no. 29993 (lmg-154) diagram

Needle

Part #27112

The manufacturer no longer makes this part, and there's no substitute part

Fitting 28584
#116

Basic engine diagram

Fitting

Part #28584

The manufacturer no longer makes this part, and there's no substitute part

/carb Float 27105
#14

Carburetor no. 29993 (lmg-154) diagram

/carb float

Part #27105

The manufacturer no longer makes this part, and there's no substitute part

Symptoms for gas pressure washers

Choose a symptom to see related pressure washer repairs.

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Why won't my pressure washer mix in the detergent?

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

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Why is smoke coming from the pressure washer's exhaust?

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

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Why won't the pressure washer starter rope retract?

Main causes: broken recoil spring, damaged recoil starter…

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Why does my pressure washer's engine lose power?

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

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Why is the spray from my pressure washer weak?

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

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Why doesn't my pressure washer recoil starter work?

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

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Why does my pressure washer spray too hard?

Main causes: faulty unloader valve, bad pressure regulator…

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Why won't my pressure washer engine start?

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

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Why does water spray out of my pressure washer's pressure relief valve?

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

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Repair guides for gas pressure washers

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

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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…

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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…

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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…

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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.

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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.…

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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.…

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