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
Onan
Lawn & Garden Engine

Model # BF-MS2379B Official Onan engine

Here are the diagrams and repair parts for Official Onan BF-MS2379B 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 237 parts  |
Pre-cleaner 140-1218
#21

Fuel system group diagram

Pre-cleaner

Part #140-1218

Replaced by #45-083-01-S

?
Manufacturer substitution
This part replaces 140-1218. Substitute parts can look different from the original.
This item is not returnable
$7.29 | 
12% OFF Phone Price : $8.29
In Stock
Element 140-1216
#13

Fuel system group diagram

Element

Part #140-1216

Replaced by #45-083-02-S

?
Manufacturer substitution
This part replaces 140-1216. Substitute parts can look different from the original.
This item is not returnable
$25.09 | 
19% OFF Phone Price : $31.09
In Stock
Gear 105-0353
#6

Crankshaft, flywheel, camshaft and piston group diagram

Gear

Part #105-0353

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

Piston Pin 112-0123-10
#12C

Crankshaft, flywheel, camshaft and piston group diagram

Piston pin

Part #112-0123-10

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

Shaft 142-0535
#4

Carburetor parts group diagram

Shaft

Part #142-0535

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

Gear Retaining Special Washer 104-0043
#25

Crankshaft, flywheel, camshaft and piston group diagram

Gear retaining special washer

Part #104-0043

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

Piston Pin 112-0123-05
#12B

Crankshaft, flywheel, camshaft and piston group diagram

Piston pin

Part #112-0123-05

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

Piston Pin 112-0123-30
#12E

Crankshaft, flywheel, camshaft and piston group diagram

Piston pin

Part #112-0123-30

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

Lock Washer 853-0013
#28

Fuel system group diagram

Lock washer

Part #853-0013

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

Cap 505-0158
#22

Gear cover, oil base and oil pump group diagram

Cap

Part #505-0158

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

Repair guides for bottom-mount refrigerators

How to replace a door gasket in a French-door refrigerator

How to replace a door gasket in a French-door refrigerator

The door gasket, often called a door seal, seals the gap around the door to keep the cold air in and the warm air out. R…

Read more
Repair difficulty
Time required
 15 minutes or less
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 a refrigerator defrost control assembly

How to replace a refrigerator defrost control assembly

Follow these steps to replace the defrost control assembly if your Kenmore or LG French door refrigerator displays an er…

Read more
Repair difficulty
Time required
 120 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