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.

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Model diagram and schematic

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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

Stud 520-0820
#45

Cylinder block group diagram

Stud

Part #520-0820

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

Lawn & Garden Equipment Engine Screw 813-0108
#17

Governor, starter, charging alternator & blower housing grp. diagram

Lawn & garden equipment engine screw

Part #813-0108

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

Bushing 150-1269
#15

Governor, starter, charging alternator & blower housing grp. diagram

Bushing

Part #150-1269

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

Lawn & Garden Equipment Engine Breather Tube 140-1169
#1

Fuel system group diagram

Lawn & garden equipment engine breather tube

Part #140-1169

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

Lawn & Garden Equipment Engine Starter Assembly 191-0933
Lawn & garden equipment engine starter assembly

Part #191-0933

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

Lock 110-0639
#40

Cylinder block group diagram

Lock

Part #110-0639

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

Nipple 505-0002
#21

Gear cover, oil base and oil pump group diagram

Nipple

Part #505-0002

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

Repair guides for front-engine lawn tractors

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How to replace a ground drive belt on a riding lawn mower

Replace the ground drive belt if it's broken or too worn to spin the transaxle pulley.…

Repair difficulty
Time required
 45 minutes or less
How to replace a blade clutch cable on a riding lawn mower

How to replace a blade clutch cable on a riding lawn mower

If the blades don't spin on your riding mower when you shift the lever, the blade clutch cable could be broken. Here’s h…

Repair difficulty
Time required
 30 minutes or less
How to replace a riding lawn mower blade drive belt

How to replace a riding lawn mower blade drive belt

Replace the blade drive belt if it's broken or won't spin the cutting blades because of wear.…

Repair difficulty
Time required
 45 minutes or less

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