Onan
Lawn & Garden Engine

Model #B48G-GA020/3858C Official Onan gas engine

Here are the diagrams and repair parts for Onan B48G-GA020-3858C gas engine, as well as links to manuals and error code tables, if available.

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Showing 10 of 297 parts

Lawn & Garden Equipment Engine Fuel Line (replaces 30241, 430217, 503-1199, 503-1577, TC-30962)#38

Fuel system Diagram

Line

Part #503-0874
Replaced by #30962
?
Manufacturer substitution
This part replaces 503-0874. Substitute parts can look different from the original.
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This item is not returnable
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Flat Washer#40

Cylinder block Diagram

Flat washer

Part #526-0122

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

Lock Washer#4

Flywheel alternator - 15 ampere Diagram

Lock washer

Part #850-0030

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

Cap Screw#11A

Gearcase Diagram

Cap screw

Part #800-0032

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

Nut#43

Fuel system Diagram

Nut

Part #870-0365

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

Flat Washer

See All Related Diagrams

Flat washer

Part #526-0018

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

Nut 1/4x20#1

Fuel system Diagram

Nut 1/4x20

Part #865-0020

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

Cap Screw#13

Oil system Diagram

Cap screw

Part #800-0028

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

Screw#22

Air housing Diagram

Screw

Part #800-0026

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

Flat Washer#3

Crankshaft and flywheel Diagram

Flat washer

Part #526-0017

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

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