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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Troybilt Lawn & Garden Equipment Engine Air Filter 35066
#245

Engine tvs115-57904c (71/143) diagram

Troybilt lawn & garden equipment engine air filter

Part #35066

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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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This part replaces 631028. Substitute parts can look different from the original.
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Needle Seat 631021
#12

Carburetor 632078a (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

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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Line 34357
#290

Engine tvs115-57904c (71/143) 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
#238

Engine tvs115-57904c (71/143) diagram

Troybilt lawn & garden equipment engine air filter collar gasket

Part #34338

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Starter 590637
#14

Starter 590637 (71/143) diagram

Starter

Part #590637

Replaced by #590739

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This part replaces 590637. Substitute parts can look different from the original.
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Starter 590702
Starter

Part #590702

Replaced by #590739

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This part replaces 590702. 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: 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 walk-behind mowers

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

How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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

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