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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Showing 10 of 297 parts  |

Line 503-0874
#38

Fuel system diagram

Line

Part #503-0874

Replaced by #30962

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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
In Stock
Valve Insert 110-1824-10
#13D

Cylinder block diagram

Valve insert

Part #110-1824-10

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

Repair Kit 146-0292
#15A

Carburetor diagram

Repair kit

Part #146-0292

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

Gasket 122-0321
#10

Oil system diagram

Gasket

Part #122-0321

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

Swivel 152-0155
Swivel

Part #152-0155

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

Cover 110-1879
#24

Cylinder block diagram

Cover

Part #110-1879

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

Washer 526-0065
Washer

Part #526-0065

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

Bushing 150-1727
#11

Governor diagram

Bushing

Part #150-1727

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

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See how to replace the oven door hinges on a gas range yourself, in just 30 minutes.…

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How to replace a range spark igniter switch

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Repair difficulty
Time required
 60 minutes or less
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How to replace a gas range oven control board

These step-by-step instructions explain how to replace an oven control board on a gas range…

Repair difficulty
Time required
 15 minutes or less

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