Tecumseh
Lawn & Garden Engine

Model # HM80-155026 Official Tecumseh 4-cycle engine

Here are the diagrams and repair parts for Official Tecumseh HM80-155026 4-cycle 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 187 parts  |

Gasket 27110
#20

Carburetor diagram

Gasket

Part #27110

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

Plate 31588
#121

Basic engine diagram

Plate

Part #31588

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

Bracket 33377
#97

Basic engine diagram

Bracket

Part #33377

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

Screw 28820
#104

Basic engine diagram

Screw

Part #28820

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

Cap 30969
#132

Basic engine diagram

Cap

Part #30969

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

/carb Float 27105
#14

Carburetor diagram

/carb float

Part #27105

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

Washer 30590A
#40

Basic engine diagram

Washer

Part #30590A

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

Gov Lever 33364
#13

Basic engine diagram

Gov lever

Part #33364

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

Coil 30560A
#11

Magneto no. 610848 diagram

Coil

Part #30560A

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

Control 33388
#81

Basic engine diagram

Control

Part #33388

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.

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.…