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Onan
Lawn & Garden Engine

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

Here are the diagrams and repair parts for Official Onan B48G-GA020-3858C gas 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 297 parts  |
Line 503-0874
#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.
This item is not returnable
$6.76 | 
13% OFF Phone Price : $7.76
Back Order
Flat Washer 526-0018
Flat washer

Part #526-0018

Replaced by #STD551025

?
Manufacturer substitution
This part replaces 526-0018. Substitute parts can look different from the original.
This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Plug 167-0291
#9

Ignition diagram

Plug

Part #167-0291

Replaced by #909

?
Manufacturer substitution
This part replaces 167-0291. Substitute parts can look different from the original.
This item is not returnable
$5.40
In Stock
Screw 800-0061
#23

Oil system diagram

Screw

Part #800-0061

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

Housing 134-3803
#3

Air housing diagram

Housing

Part #134-3803

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

Terminal 332-2073
#2

Flywheel alternator - 15 ampere diagram

Terminal

Part #332-2073

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

Adapter 154-1977
#17

Fuel system diagram

Adapter

Part #154-1977

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

Lawn & Garden Equipment Engine Breaker Point Assembly 160-1183
#10

Ignition breaker box diagram

Lawn & garden equipment engine breaker point assembly

Part #160-1183

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

Cover 140-1663
#2

Fuel system diagram

Cover

Part #140-1663

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

Lawn & Garden Equipment Engine Nut 166-0604
#7

Ignition diagram

Lawn & garden equipment engine nut

Part #166-0604

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

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Repair difficulty
Time required
 45 minutes or less

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