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Onan
Lawn & Garden Engine

Model # BF-MS2379A Official Onan engine

Here are the diagrams and repair parts for Official Onan BF-MS2379A engine, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 123 parts  |
Gear Set 105-353
#6

Crankshaft - flywheel, camshaft and piston group diagram

Gear set

Part #105-353

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

Scr Lk Flywh 821-10
#27

Crankshaft - flywheel, camshaft and piston group diagram

Scr lk flywh

Part #821-10

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

Wdf Key #9 515-2
#9

Crankshaft - flywheel, camshaft and piston group diagram

Wdf key #9

Part #515-2

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

Cap/oil Fill 123-1138
#12

Gear cover, oil base, and oil pump group diagram

Cap/oil fill

Part #123-1138

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

Cover 122-359
#23

Gear cover, oil base, and oil pump group diagram

Cover

Part #122-359

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

Tappet 115-6
#31

Cylinder block group diagram

Tappet

Part #115-6

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

Pin 516-130
#6

Gear cover, oil base, and oil pump group diagram

Pin

Part #516-130

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

Cap Screw 800-34
#30

Gear cover, oil base, and oil pump group diagram

Cap screw

Part #800-34

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

.005" Oversize 113-159-02
#16B

Crankshaft - flywheel, camshaft and piston group diagram

.005" oversize

Part #113-159-02

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

Insert 110-197-02
#37B

Cylinder block group diagram

Insert

Part #110-197-02

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

Symptoms for gas walk-behind mowers

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Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

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Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

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Why does my lawn mower vibrate a lot?

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

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Why won't my lawn mower start?

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

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Why does my lawn mower stall?

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