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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Showing 10 of 187 parts  |

Screw 28820
#104

Basic engine diagram

Screw

Part #28820

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

Governor Gear Assembly 30591
#37

Basic engine diagram

Governor gear assembly

Part #30591

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

Tube 27627
#70

Basic engine diagram

Tube

Part #27627

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

/gov Clamp 29916
#9

Basic engine diagram

/gov clamp

Part #29916

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

Gasket 27554
#25

Carburetor diagram

Gasket

Part #27554

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

Fan Flywheel 610934
#1A

Magneto no. 610848 diagram

Fan flywheel

Part #610934

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

Gas Cap 30998B
#126

Basic engine diagram

Gas cap

Part #30998B

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 band saws

Choose a symptom to see related band saw repairs.

Main causes: damaged rubber tire, worn wheel bearings, loose blade tension, dull saw blade…

Main causes: dull blade, using the wrong type of blade, feeding work piece to quickly, loose blade tension…

Main causes: angle indicator needs adjustment, dull blade…

Main causes: dull blade, improper feeding, loose blade tension, not using a work piece guide…

Main causes: broken saw blade, bad drive belt, damaged rubber tire…

Main causes: dull blade, using the wrong type of blade, weak drive motor…

Main causes: lack of electrical power, broken power cord, bad on/off switch, faulty drive motor…

Repair guides for band saws

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

How to replace a band saw on-off switch

How to replace a band saw on-off switch

If the switch won't turn the band saw on or off, it could be defective. Replace the switch, using these steps.…

Repair difficulty
Time required
 15 minutes or less
How to replace a band saw drive belt

How to replace a band saw drive belt

If the motor runs but the blade doesn't move, it could be that the drive belt is broken. Here's how to replace it.…

Repair difficulty
Time required
 15 minutes or less
How to replace a band saw blade

How to replace a band saw blade

If the saw blade is dull or damaged and isn't cutting cleanly, replace the blade following these steps.…

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 band saw.

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.…