Briggs & Stratton
Lawn & Garden Engine

Model # 124700 TO 124799 (3603 - 3603) Official Briggs & Stratton engine

Here are the diagrams and repair parts for Official Briggs & Stratton 124700-TO-124799-3603-3603 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 305 parts  |

Lawn & Garden Equipment Engine Air Filter 491588

#967

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Lawn & garden equipment engine air filter

Part #491588

Replaced by #491588S

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Manufacturer substitution
This part replaces 491588. Substitute parts can look different from the original.
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Carburetor Kit 493762

#121

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Carburetor kit

Part #493762

Replaced by #498260

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Carburetor 492495

#121A

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Carburetor

Part #492495

Replaced by #498260

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Carburetor 490937

#977

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Carburetor

Part #490937

Replaced by #498260

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This part replaces 490937. Substitute parts can look different from the original.
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Fuel Pipe 492790

#187

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Fuel pipe

Part #492790

Replaced by #791766

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This part replaces 492790. Substitute parts can look different from the original.
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Lawn & Garden Equipment Engine Ignition Coil 802574

#333

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Lawn & garden equipment engine ignition coil

Part #802574

Replaced by #590454

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Pre-filter 493537

#991

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Pre-filter

Part #493537

Replaced by #493537S

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Key 222698

#24

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Key

Part #222698

Replaced by #222698S

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Fuel Tank Assembly 492859

#972E

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Fuel tank assembly

Part #492859

Replaced by #699392

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Fuel Tank Assembly 493507

#972B

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Fuel tank assembly

Part #493507

Replaced by #699392

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Symptoms for gas pressure washers

Choose a symptom to see related pressure washer repairs.

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

Main causes: broken recoil spring, damaged recoil starter…

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

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

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

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

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

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 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
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 replace a pressure washer pump

How to replace a pressure washer pump

The pump can be damaged by air in the inlet water supply or by chemicals that remain in the pump body after using the ch…

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

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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What are the main components of a lawn mower?

Learn about the main parts of a lawn mower and when to replace parts.…