Tecumseh
Lawn & Garden Engine

Model # HM80-155303K Official Tecumseh 4-cycle engine

Here are the diagrams and repair parts for Official Tecumseh HM80-155303K 4-cycle engine, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 160 parts  |

Lawn Mower O-ring 631028
#29

Carburetor 632351 (71/143) diagram

Lawn mower o-ring

Part #631028

Replaced by #631028A

?
Manufacturer substitution
This part replaces 631028. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$2.49
29% OFF Phone Price : $3.49
In Stock
Spark Plug 34251
#99

Replacement parts diagram

Spark plug

Part #34251

Replaced by #J19LM

?
Manufacturer substitution
This part replaces 34251. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$4.80
17% OFF Phone Price : $5.80
In Stock
Needle Seat 631021
#30

Carburetor 632351 (71/143) diagram

Needle seat

Part #631021

Replaced by #631021B

?
Manufacturer substitution
This part replaces 631021. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$9.79
9% OFF Phone Price : $10.79
In Stock
Rope 590451A
#9

Rewind starter diagram

Rope

Part #590451A

Replaced by #590535

?
Manufacturer substitution
This part replaces 590451A. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$2.49
29% OFF Phone Price : $3.49
In Stock
Cook Top Side Trim Kit Lawn & Garden Equipment Engine Air Filter (replaces 28424l) 28424
#106

Replacement parts diagram

Cook top side trim kit lawn & garden equipment engine air filter (replaces 28424l)

Part #28424

BEST SELLER
This item is not returnable
$4.14
19% OFF Phone Price : $5.14
In Stock
Float 632019
#28

Carburetor 632351 (71/143) diagram

Float

Part #632019

Replaced by #632019A

?
Manufacturer substitution
This part replaces 632019. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$8.89
10% OFF Phone Price : $9.89
In Stock
Lauson Lawn & Garden Equipment Engine Carburetor Rebuild Kit 632347
#60

Carburetor 632351 (71/143) diagram

Lauson lawn & garden equipment engine carburetor rebuild kit

Part #632347

This item is not returnable
$21.69
22% OFF Phone Price : $27.69
In Stock
Troybilt Lawn & Garden Equipment Engine Carburetor Float Bowl (replaces 631025, 632808) 631867
#25

Carburetor 632351 (71/143) diagram

Troybilt lawn & garden equipment engine carburetor float bowl (replaces 631025, 632808)

Part #631867

This item is not returnable
$3.49
22% OFF Phone Price : $4.49
In Stock
Lamination 35135
#82

Replacement parts diagram

Lamination

Part #35135

Replaced by #35135B

?
Manufacturer substitution
This part replaces 35135. Substitute parts can look different from the original.
$58.79
9% OFF Phone Price : $64.79
In Stock
Lawn & Garden Equipment Engine Fuel Tank (replaces 34160, 37290) 34156A
#175

Replacement parts diagram

Lawn & garden equipment engine fuel tank (replaces 34160, 37290)

Part #34156A

$47.99
11% OFF Phone Price : $53.99
In Stock

Symptoms for gas ranges

Main causes: burner igniter switch failure, bad spark module, dirty or damaged spark electrode, wiring failure…

Main causes: gas supply problem, faulty pressure regulator, clogs in burner or orifice, control system failure, faulty t…

Repair guides for gas ranges

How to replace oven door hinges on a gas range

How to replace oven door hinges on a gas range

See how to replace the oven door hinges on a gas range yourself, in just 30 minutes.…

Repair difficulty
Time required
 15 minutes or less
How to replace a range spark igniter switch

How to replace a range spark igniter switch

Follow these steps to replace the spark igniter switch—sometimes called a burner switch or spark switch—on a gas or dual…

Repair difficulty
Time required
 60 minutes or less
How to replace a range spark igniter electrode

How to replace a range spark igniter electrode

Learn how to replace the spark igniter electrode for the surface burners on a gas range or dual-fuel range.…

Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your lawn & garden engines

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.…