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Onan
Lawn & Garden Engine

Model # BG-MS2980A Official Onan engine

Here are the diagrams and repair parts for Official Onan BG-MS2980A 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 267 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.
This item is not returnable
$25.09 | 
19% OFF Phone Price : $31.09
In Stock
Pre-clner 140-1259
#20

Fuel system group diagram

Pre-clner

Part #140-1259

Replaced by #45-083-01-S

?
Manufacturer substitution
This part replaces 140-1259. Substitute parts can look different from the original.
This item is not returnable
$7.29 | 
12% OFF Phone Price : $8.29
In Stock
Gasket 145-0438
#3

Fuel system group diagram

Gasket

Part #145-0438

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

Gasket 103-0408
#10

Gear cover, oil base and oil pump group diagram

Gasket

Part #103-0408

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

Sleeve Assembly 142-0573
#2

Carburetor group diagram

Sleeve assembly

Part #142-0573

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

Cap Screw 800-0028
#27

Gear cover, oil base and oil pump group diagram

Cap screw

Part #800-0028

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

Nipple Pipe 505-0176
#28

Gear cover, oil base and oil pump group diagram

Nipple pipe

Part #505-0176

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

Gasket 122-0347
#35

Gear cover, oil base and oil pump group diagram

Gasket

Part #122-0347

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

Intake 120-0713
#20

Gear cover, oil base and oil pump group diagram

Intake

Part #120-0713

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

Bearing 110-0197-05
#28FC

Cylinder block group diagram

Bearing

Part #110-0197-05

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

Symptoms for gas cooktops

Why won't my cooktop's gas burners ignite or spark?

Main causes: burner igniter switch failure, bad spark module, dirty or damaged spark electrode, wiring failure, lack of …

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Why isn't my cooktop's gas burner heating properly?

Main causes: gas supply problem, faulty pressure regulator, clogs in burner or orifice, burner valve failure…

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Why do my cooktop's spark igniters keep clicking?

Main causes: stuck burner igniter switch, wet igniter switch contacts, faulty spark module…

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Repair guides for gas cooktops

How to replace a spark module on a gas cooktop

How to replace a spark module on a gas cooktop

No flame on your gas cooktop? Installing a new spark module could be the fix you need.…

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Repair difficulty
Time required
 30 minutes or less
How to replace a spark igniter switch on a gas cooktop

How to replace a spark igniter switch on a gas cooktop

Follow these step-by-step instructions to fix the surface burner ignition system on your gas cooktop by replacing the sp…

Read more
Repair difficulty
Time required
 45 minutes or less

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