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Onan
Lawn & Garden Engine

Model # BF-MS2666C Official Onan engine

Here are the diagrams and repair parts for Official Onan BF-MS2666C 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 236 parts  |
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.
BEST SELLER
This item is not returnable
$25.09 | 
17% OFF Phone Price : $30.09
In Stock
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
Flat Washer 526-0122
#7

Cylinder block group diagram

Flat washer

Part #526-0122

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

Lock Nut 870-0277
#19

Crankshaft, flywheel, camshaft and piston group diagram

Lock nut

Part #870-0277

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

Washer 526-0113
#27

Governor, starter, charging alt. & blower housing group diagram

Washer

Part #526-0113

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

Flat Washer 526-0214
#26

Governor, starter, charging alt. & blower housing group diagram

Flat washer

Part #526-0214

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

Lock 5/16" - Code 21bj, 21bk, 21bw 850-0045
Lock 5/16" - code 21bj, 21bk, 21bw

Part #850-0045

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

Screw 806-0027
#42

Cylinder block group diagram

Screw

Part #806-0027

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

Flat Washer 526-0018
#5

Cylinder block group diagram

Flat washer

Part #526-0018

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

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

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