Kohler
Lawn & Garden Engine

Model # M8ST-301548 Official Kohler 8-hp engine

Here are the diagrams and repair parts for Official Kohler M8ST-301548 8-hp 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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Showing 10 of 232 parts  |

Bushing 25-158-09
#31

Governor - group 17 diagram

Bushing

Part #25-158-09

Replaced by #25-158-11-S

?
Manufacturer substitution
This part replaces 25-158-09. Substitute parts can look different from the original.
This item is not returnable
$7.20
12% OFF Phone Price : $8.20
In Stock
Bushing 25-158-08
#21A

Carburetor - group 5 diagram

Bushing

Part #25-158-08

Replaced by #25-158-08-S

?
Manufacturer substitution
This part replaces 25-158-08. Substitute parts can look different from the original.
This item is not returnable
$7.03
12% OFF Phone Price : $8.03
In Stock
Gasket 25-041-03
#38

Carburetor - group 5 diagram

Gasket

Part #25-041-03

Replaced by #25-041-03-S

?
Manufacturer substitution
This part replaces 25-041-03. Substitute parts can look different from the original.
This item is not returnable
$9.19
10% OFF Phone Price : $10.19
In Stock
Kit 25-757-09
#36

Carburetor - group 5 diagram

Kit

Part #25-757-09

Replaced by #25-757-09-S

?
Manufacturer substitution
This part replaces 25-757-09. Substitute parts can look different from the original.
In Stock
Clamp 25-237-01
#7

Fuel tank - group 15 diagram

Clamp

Part #25-237-01

Replaced by #25-237-01-S

?
Manufacturer substitution
This part replaces 25-237-01. Substitute parts can look different from the original.
This item is not returnable
In Stock
Guide 230007-S
#6

Crankcase - group 7 diagram

Guide

Part #230007-S

In Stock
Shaft 230540-S
#26

Governor - group 17 diagram

Shaft

Part #230540-S

In Stock
Lawn & Garden Equipment Engine Governor Gear Assembly A-235743-S
#25

Governor - group 17 diagram

Lawn & garden equipment engine governor gear assembly

Part #A-235743-S

In Stock
Shaft 230125-S
#2

Crankcase - group 7 diagram

Shaft

Part #230125-S

In Stock
Connector 25-155-02
#5A

Fuel pump - group 14 diagram

Connector

Part #25-155-02

Replaced by #25-155-02-S

?
Manufacturer substitution
This part replaces 25-155-02. Substitute parts can look different from the original.
In Stock

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 lawn & garden engines

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

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.…

What are the main components of a lawn mower?

What are the main components of a lawn mower?

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