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Honda
Lawn & Garden Engine

Model # GX390UT1 Official Honda engine

Here are the diagrams and repair parts for Official Honda GX390UT1 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 172 parts  |
Valve Lifter 14441-ZE2-000

#78

All parts diagram

Valve lifter

Part #14441-ZE2-000

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

Lawn & Garden Equipment Engine Flange Bolt 90013-883-000

#2

All parts diagram

Lawn & garden equipment engine flange bolt

Part #90013-883-000

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

Valve Set, F 16011-ZA0-931

#146

All parts diagram

Valve set, f

Part #16011-ZA0-931

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

Lawn & Garden Equipment Engine Lock Nut 90114-SA0-000

#164

All parts diagram

Lawn & garden equipment engine lock nut

Part #90114-SA0-000

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

Gasket 16957-ZE1-812

#143

All parts diagram

Gasket

Part #16957-ZE1-812

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

Pulley 28421-ZE3-W01

#93

All parts diagram

Pulley

Part #28421-ZE3-W01

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

Bolt Washer 90009-Z1C-000

#123

All parts diagram

Bolt washer

Part #90009-Z1C-000

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

Fuel Tube 91424-Z5L-801

#86

All parts diagram

Fuel tube

Part #91424-Z5L-801

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

Bearing, Radial Ball 91001-ZF6-013

#54

All parts diagram

Bearing, radial ball

Part #91001-ZF6-013

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

Lawn & Garden Equipment Engine Screw 90050-ZE1-000

#101

All parts diagram

Lawn & garden equipment engine screw

Part #90050-ZE1-000

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

Symptoms for gas walk-behind mowers

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

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Why does my lawn mower vibrate a lot?

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

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Why does my lawn mower cut unevenly?

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

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Why does my lawn mower run rough?

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

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Why won't my lawn mower move?

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

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Why won't my lawn mower start?

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

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Why does my lawn mower stall?

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

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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.

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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.…

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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.…

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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.…

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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 walk-behind lawn mower.

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Top questions about Sears and Sears PartsDirect

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What are the main components of a lawn mower?

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