Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
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  |
Hexagon Nut 50022900
Hexagon nut

Part #50022900

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

Camshaft Sub-assy Consisting Of Item Nos. 1a-1e (helical Toothed) 160411BU

#NI

All parts diagram

Camshaft sub-assy consisting of item nos. 1a-1e (helical toothed)

Part #160411BU

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

Power-take-off Flange (flange For Power-take-off At Governor Side (timing Cover Table 4, Item No 13a Required)) 168801
#16

Flange diagram

Power-take-off flange (flange for power-take-off at governor side (timing cover table 4, item no 13a required))

Part #168801

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

Hexagon Screw 50026800
Hexagon screw

Part #50026800

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

Allen Screw 50052600
#12

Starter diagram

Allen screw

Part #50052600

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

Reduction Gear 2,8:1 ) 40038200
#60E

Flange diagram

Reduction gear 2,8:1 )

Part #40038200

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

Cap Screw 40032700
#2

Fuel tank diagram

Cap screw

Part #40032700

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

Injection Valve Compl. =bosch= 40037500
#30A

Cam shaft diagram

Injection valve compl. =bosch=

Part #40037500

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

Bracket 1611804
#31

Starter diagram

Bracket

Part #1611804

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

Hexagon Screw M12x70 50031800
#33A

Starter diagram

Hexagon screw m12x70

Part #50031800

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

Symptoms for top-mount refrigerators

Why is there water in the bottom of the fridge under vegetable drawers?

Main causes: frozen or clogged defrost drain tube, cracked water system tubing…

Read more

Repair guides for top-mount refrigerators

How to replace a refrigerator water valve

How to replace a refrigerator water valve

Replace the water valve that feeds water to the ice maker and water dispenser if it no longer controls the flow of water…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace the evaporator fan motor in a top-freezer refrigerator

How to replace the evaporator fan motor in a top-freezer refrigerator

The evaporator fan motor blows air across the evaporator coils and through the refrigerator cabinet for cooling. Replace…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace the compressor start relay in a top-freezer refrigerator

How to replace the compressor start relay in a top-freezer refrigerator

The compressor start relay starts the compressor and shuts it off if the motor overheats. Replace the start relay if it'…

Read more
Repair difficulty
Time required
 15 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