Lawn-Boy
Gas Walk-Behind Mower

Model # 10302-5900001-5999999 Official Lawn-Boy walk-behind lawn mower

Here are the diagrams and repair parts for Official Lawn-Boy 10302-5900001-5999999 walk-behind lawn mower, 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 260 parts  |

Oil 730225
#420

Engine tvs115-57904c (71/143) diagram

Oil

Part #730225

Replaced by #25-357-03-S

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Manufacturer substitution
This part replaces 730225. Substitute parts can look different from the original.
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$10.82
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Lawn & Garden Equipment Engine Air Filter 35066
#245

Engine tvs115-57904c (71/143) diagram

Lawn & garden equipment engine air filter

Part #35066

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$4.67
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Lawn Mower O-ring 631028
#25

Carburetor 632078a (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 Carburetor Gasket (replaces 27141) 26756
#184

Engine tvs115-57904c (71/143) diagram

Lawn & garden equipment engine carburetor gasket (replaces 27141)

Part #26756

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Lamination 34443A
#100

Engine tvs115-57904c (71/143) 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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Lawn & Garden Equipment Engine Fuel Line Clamp 26460
#292

Engine tvs115-57904c (71/143) diagram

Lawn & garden equipment engine fuel line clamp

Part #26460

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Cleaner Cover 35986
#250

Engine tvs115-57904c (71/143) diagram

Cleaner cover

Part #35986

Replaced by #35065

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Manufacturer substitution
This part replaces 35986. Substitute parts can look different from the original.
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Float 632019
#14

Carburetor 632078a (71/143) 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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Lawn & Garden Equipment Engine Air Filter Collar Gasket 34338
#238

Engine tvs115-57904c (71/143) diagram

Lawn & garden equipment engine air filter collar gasket

Part #34338

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Lawn & Garden Equipment Engine Fuel Tank Cap 35355
#301

Engine tvs115-57904c (71/143) diagram

Lawn & garden equipment engine fuel tank cap

Part #35355

Replaced by #37845

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Manufacturer substitution
This part replaces 35355. Substitute parts can look different from the original.
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Symptoms for gas walk-behind mowers

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

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…

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

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…

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 transmission

How to replace a lawn mower transmission

Learn how to replace the transmission on your lawn mower if it's locked up or won't drive the wheels.…

Repair difficulty
Time required
 60 minutes or less
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 ignition coil on a flathead engine

How to replace a lawn mower ignition coil on a flathead engine

If the spark plug doesn't fire when you try to start the mower, you could have a defective ignition coil. Follow these s…

Repair difficulty
Time required
 30 minutes or less

Effective articles & videos to help repair your walk-behind mowers

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

Tapping into a new feature in the Search Bar on Sears PartsDirect

Tapping into a new feature in the Search Bar on Sears PartsDirect

Learn about a new feature added to the Search Bar on Sears PartsDirect…

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

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.…