Can’t find your part?   Contact us:+1-309-603-4777
Sears Parts Direct
Tips to find your model number
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Sears
Lawn & Garden Engine

Model # 550E79 Official Sears diesel engine

Here are the diagrams and repair parts for Official Sears 550E79 diesel 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 371 parts  |
Chain Wheel BSK4791
#45

Starting handel diagram

Chain wheel

Part #BSK4791

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

Belt Pulley 125 035901A
#33

Fuel tank diagram

Belt pulley 125

Part #035901A

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

Spacer Bush Mounting Of Bosch-hydraulic Pump At Governor Side (using Dynamo 12 Volt) 297406
#39

Starter diagram

Spacer bush mounting of bosch-hydraulic pump at governor side (using dynamo 12 volt)

Part #297406

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

Allen Screw M10x25 50053900
#16

Dynamo starter diagram

Allen screw m10x25

Part #50053900

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

Grooved Ball Bearing 6005 50012800
#39

Starting handel diagram

Grooved ball bearing 6005

Part #50012800

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

Gasket Screw 1611204
#5

Additional oil tank diagram

Gasket screw

Part #1611204

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

Adjusting Plate 106409
#39

Flange diagram

Adjusting plate

Part #106409

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

Oil Seal B 1 Sl 70x85x8/9 40034700
Oil seal b 1 sl 70x85x8/9

Part #40034700

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

Threaded Pin Am10x25 50005100
#13A

Flange diagram

Threaded pin am10x25

Part #50005100

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

Starting Handle BSK5975
#54

Starting handel diagram

Starting handle

Part #BSK5975

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

Symptoms for electric cooktops

Why doesn't my electric cooktop's surface element heat?

Main causes: broken surface element, surface element switch failure, control system problem, surface element limiter swi…

Read more

Repair guides for electric cooktops

How to replace a coil surface element on an electric cooktop

How to replace a coil surface element on an electric cooktop

Easily replace a coil surface element in 15 minutes or less by following these step-by-step instructions.…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace the glass top on an electric cooktop

How to replace the glass top on an electric cooktop

Don't use a cracked or damage glass cooktop—replace it, using these instructions to guide you.…

Read more
Repair difficulty
Time required
 30 minutes or less
How to replace a radiant element on an electric cooktop

How to replace a radiant element on an electric cooktop

Follow these step-by-step instructions to replace a damaged radiant element on your electric cooktop when the element wo…

Read more
Repair difficulty
Time required
 45 minutes or less

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

View all
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.…

Read more
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.…

Read more

Parts & More