Tecumseh
Lawn & Garden Engine

Model # HM80-155140D Official Tecumseh 4-cycle engine

Here are the diagrams and repair parts for Official Tecumseh HM80-155140D 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 194 parts  |

Spark Plug 34251
#65A

Tecumseh 4-cycle engine diagram

Spark plug

Part #34251

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

O-ring 631028
#25

Carburetor no. 632037 diagram

O-ring

Part #631028

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

Needl/seat 631021
#12

Carburetor no. 632037 diagram

Needl/seat

Part #631021

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

Float 632019
#14

Carburetor no. 632037 diagram

Float

Part #632019

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

Breather Element Air Filter 28424
#67

Tecumseh 4-cycle engine diagram

Breather element air filter

Part #28424

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

Fuel Tank 34156
#124

Tecumseh 4-cycle engine diagram

Fuel tank

Part #34156

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

Float Bowl 631867
#16

Carburetor no. 632037 diagram

Float bowl

Part #631867

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

Plate 31588
#121

Tecumseh 4-cycle engine diagram

Plate

Part #31588

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

/fuel Clamp 26460
#79

Tecumseh 4-cycle engine diagram

/fuel clamp

Part #26460

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

Bracket 33377
#97

Tecumseh 4-cycle engine diagram

Bracket

Part #33377

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

Symptoms for gas leaf blowers

Choose a symptom to see related leaf blower repairs.

Main causes: cracked fuel lines, leaky carburetor seals, damaged fuel tank cap, cracked fuel tank…

Main causes: damaged fan blade, engine needs a tune up, dirty carburetor…

Main causes: stale fuel, dirty air filter, bad spark plug, cracked fuel lines, clogged carburetor…

Main causes: mixing too much 2-cycle oil with the gas, dirty air filter, clogged carburetor, engine needs tune up…

Main causes: bad gas, clogged air filter, cracked fuel lines, clogged fuel filter, dirty carburetor, bad spark plug, wor…

Repair guides for gas leaf blowers

These step-by-step repair guides will help you safely fix what’s broken on your leaf blower.

How to replace a leaf blower carburetor

How to replace a leaf blower carburetor

The carburetor could be the problem If the leaf blower engine won't start even though there's fuel in the tank. Follow t…

Repair difficulty
Time required
 15 minutes or less
How to replace leaf blower fuel lines

How to replace leaf blower fuel lines

Leaf blower fuel lines deteriorate with time and eventually can split or crack. You can remove and replace them yourself…

Repair difficulty
Time required
 60 minutes or less
How to rebuild a leaf blower carburetor

How to rebuild a leaf blower carburetor

If the leaf blower engine won't start even though there's fuel in the tank, the carburetor could be the problem. Follow …

Repair difficulty
Time required
 60 minutes or less

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

Use the advice and tips in these articles to get the most out of your leaf blower.

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.…