Tecumseh
Lawn & Garden Engine

Model # HS40-55598K Official Tecumseh 4-cycle engine

Here are the diagrams and repair parts for Official Tecumseh HS40-55598K 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

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ALL PARTS
Showing 10 of 159 parts  |

Oil 730225
#420

Tecumseh 4-cylce engine diagram

Oil

Part #730225

Replaced by #25-357-03-S

?
Manufacturer substitution
This part replaces 730225. Substitute parts can look different from the original.
BEST SELLER
$10.82
16% OFF Phone Price : $12.82
In Stock
Troybilt Lawn & Garden Equipment Engine Carburetor Gasket (replaces 27141) 26756
#184

Tecumseh 4-cylce engine diagram

Troybilt lawn & garden equipment engine carburetor gasket (replaces 27141)

Part #26756

BEST SELLER
This item is not returnable
$3.64
22% OFF Phone Price : $4.64
In Stock
Starter 590642A
Starter

Part #590642A

Replaced by #590785

?
Manufacturer substitution
This part replaces 590642A. Substitute parts can look different from the original.
BEST SELLER
$30.41
16% OFF Phone Price : $36.41
In Stock
Lamination 34443A
#100

Tecumseh 4-cylce engine diagram

Lamination

Part #34443A

Replaced by #34443D

?
Manufacturer substitution
This part replaces 34443A. Substitute parts can look different from the original.
BEST SELLER
$44.16
12% OFF Phone Price : $50.16
In Stock
Troybilt Lawn & Garden Equipment Engine Fuel Line Clamp 26460
#292

Tecumseh 4-cylce engine diagram

Troybilt lawn & garden equipment engine fuel line clamp

Part #26460

BEST SELLER
This item is not returnable
$2.49
29% OFF Phone Price : $3.49
In Stock
Lawn & Garden Equipment Engine Recoil Starter Rope, 98-in (replaces 1258, 28288, 28358, 28528, 30971, 31285, 31395, 31396, 31696, 590451a, 590456, 590527, 730608, 740032) 590535
#12

Rewind starter diagram

Lawn & garden equipment engine recoil starter rope, 98-in (replaces 1258, 28288, 28358, 28528, 30971, 31285, 31395, 31396, 31696, 590451a, 590456, 590527, 730608, 740032)

Part #590535

BEST SELLER
This item is not returnable
$2.49
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In Stock
Gasket 27110
#21

Replacement parts diagram

Gasket

Part #27110

Replaced by #27110A

?
Manufacturer substitution
This part replaces 27110. 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
Lauson Lawn & Garden Equipment Engine Fuel Line (replaces 30241, 430217, 503-1199, 503-1577, Tc-30962) 30962
#290

Tecumseh 4-cylce engine diagram

Lauson lawn & garden equipment engine fuel line (replaces 30241, 430217, 503-1199, 503-1577, tc-30962)

Part #30962

This item is not returnable
$6.76
13% OFF Phone Price : $7.76
In Stock
Troybilt Lawn & Garden Equipment Engine Oil Seal 27897
#75

Tecumseh 4-cylce engine diagram

Troybilt lawn & garden equipment engine oil seal

Part #27897

This item is not returnable
$7.02
12% OFF Phone Price : $8.02
In Stock
Troybilt Lawn & Garden Equipment Engine Spark Plug Boot (replaces 27276, Tc-610118) 610118
#101

Tecumseh 4-cylce engine diagram

Troybilt lawn & garden equipment engine spark plug boot (replaces 27276, tc-610118)

Part #610118

This item is not returnable
$5.24
16% OFF Phone Price : $6.24
In Stock

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.…

Tecumseh
Lawn & Garden Engine

Model # HS40-55598K Official Tecumseh 4-cycle engine

Here are the diagrams and repair parts for Official Tecumseh HS40-55598K 4-cycle engine, as well as links to manuals and error code tables, if available.

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 159 parts  |

Oil 730225
#420

Tecumseh 4-cylce engine diagram

Oil

Part #730225

Replaced by #25-357-03-S

?
Manufacturer substitution
This part replaces 730225. Substitute parts can look different from the original.
BEST SELLER
$10.82
16% OFF Phone Price : $12.82
In Stock
Troybilt Lawn & Garden Equipment Engine Carburetor Gasket (replaces 27141) 26756
#184

Tecumseh 4-cylce engine diagram

Troybilt lawn & garden equipment engine carburetor gasket (replaces 27141)

Part #26756

BEST SELLER
This item is not returnable
$3.64
22% OFF Phone Price : $4.64
In Stock
Starter 590642A
Starter

Part #590642A

Replaced by #590785

?
Manufacturer substitution
This part replaces 590642A. Substitute parts can look different from the original.
BEST SELLER
$30.41
16% OFF Phone Price : $36.41
In Stock
Lamination 34443A
#100

Tecumseh 4-cylce engine diagram

Lamination

Part #34443A

Replaced by #34443D

?
Manufacturer substitution
This part replaces 34443A. Substitute parts can look different from the original.
BEST SELLER
$44.16
12% OFF Phone Price : $50.16
In Stock
Troybilt Lawn & Garden Equipment Engine Fuel Line Clamp 26460
#292

Tecumseh 4-cylce engine diagram

Troybilt lawn & garden equipment engine fuel line clamp

Part #26460

BEST SELLER
This item is not returnable
$2.49
29% OFF Phone Price : $3.49
In Stock
Lawn & Garden Equipment Engine Recoil Starter Rope, 98-in (replaces 1258, 28288, 28358, 28528, 30971, 31285, 31395, 31396, 31696, 590451a, 590456, 590527, 730608, 740032) 590535
#12

Rewind starter diagram

Lawn & garden equipment engine recoil starter rope, 98-in (replaces 1258, 28288, 28358, 28528, 30971, 31285, 31395, 31396, 31696, 590451a, 590456, 590527, 730608, 740032)

Part #590535

BEST SELLER
This item is not returnable
$2.49
29% OFF Phone Price : $3.49
In Stock
Gasket 27110
#21

Replacement parts diagram

Gasket

Part #27110

Replaced by #27110A

?
Manufacturer substitution
This part replaces 27110. 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
Lauson Lawn & Garden Equipment Engine Fuel Line (replaces 30241, 430217, 503-1199, 503-1577, Tc-30962) 30962
#290

Tecumseh 4-cylce engine diagram

Lauson lawn & garden equipment engine fuel line (replaces 30241, 430217, 503-1199, 503-1577, tc-30962)

Part #30962

This item is not returnable
$6.76
13% OFF Phone Price : $7.76
In Stock
Troybilt Lawn & Garden Equipment Engine Oil Seal 27897
#75

Tecumseh 4-cylce engine diagram

Troybilt lawn & garden equipment engine oil seal

Part #27897

This item is not returnable
$7.02
12% OFF Phone Price : $8.02
In Stock
Troybilt Lawn & Garden Equipment Engine Spark Plug Boot (replaces 27276, Tc-610118) 610118
#101

Tecumseh 4-cylce engine diagram

Troybilt lawn & garden equipment engine spark plug boot (replaces 27276, tc-610118)

Part #610118

This item is not returnable
$5.24
16% OFF Phone Price : $6.24
In Stock

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.…