Tecumseh
Lawn & Garden Engine

Model # HMSK80-155-144-C Official Tecumseh engine

Here are the diagrams and repair parts for Official Tecumseh HMSK80-155-144-C 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 205 parts  |

Spark Plug 34251
#65A

Basic engine diagram

Spark plug

Part #34251

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

Gasket 27110
#21

Carburetor no. 631924 diagram

Gasket

Part #27110

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

Primer Line 32180A
#138

Basic engine diagram

Primer line

Part #32180A

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

Breather Element Air Filter 28424
#67

Basic engine diagram

Breather element air filter

Part #28424

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

Gasket 33861
#75

Basic engine diagram

Gasket

Part #33861

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

Cover 610118
#49

Basic engine diagram

Cover

Part #610118

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

Screw 650765
#102

Basic engine diagram

Screw

Part #650765

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

Governor Linkage 33878
#85

Basic engine diagram

Governor linkage

Part #33878

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

/fuel Clamp 26460
#79

Basic engine diagram

/fuel clamp

Part #26460

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

Repair guides for front-engine lawn tractors

How to replace a blade clutch cable on a riding lawn mower

How to replace a blade clutch cable on a riding lawn mower

If the blades don't spin on your riding mower when you shift the lever, the blade clutch cable could be broken. Here’s h…

Repair difficulty
Time required
 30 minutes or less
How to replace the brake interlock switch on a riding lawn mower

How to replace the brake interlock switch on a riding lawn mower

If the engine won’t start even though the brake is on, the brake interlock switch could be at fault. Here’s how to repla…

Repair difficulty
Time required
 30 minutes or less
How to replace a riding lawn mower blade drive belt

How to replace a riding lawn mower blade drive belt

Replace the blade drive belt if it's broken or won't spin the cutting blades because of wear.…

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.…