Lawn-Boy
Gas Walk-Behind Mower

Model # 10310-5900001-5999999 Official Lawn-Boy walk-behind lawn mower

Here are the diagrams and repair parts for Official Lawn-Boy 10310-5900001-5999999 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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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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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: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

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: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

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 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 recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower wheel

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…

Repair difficulty
Time required
 15 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.…

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.…

Types of walk-behind mower blades video

Types of walk-behind mower blades video

Learn about the different kinds of mower blades and how to maintain them.…