Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Onan
Lawn & Garden Engine

Model # B48G-GA018/3633A Official Onan engine

Here are the diagrams and repair parts for Official Onan B48G-GA018-3633A engine, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 247 parts  |
Pre-clner 140-1259
#20

Fuel system 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
Flat Washer 526-0214
#3

Governor, starter charging alternator and blower housing diagram

Flat washer

Part #526-0214

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

Element 140-1216
#13

Fuel system 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
Flat Washer 526-0018
#5

Cylinder block diagram

Flat washer

Part #526-0018

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

Screw 800-0545
#38A

Gear cover oil base and oil pump group diagram

Screw

Part #800-0545

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

Screw 815-0290
#24

Governor, starter charging alternator and blower housing diagram

Screw

Part #815-0290

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

Arm 150-1576
#10

Governor, starter charging alternator and blower housing diagram

Arm

Part #150-1576

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

Stud 150-1418
#21

Governor, starter charging alternator and blower housing diagram

Stud

Part #150-1418

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

Screw 800-0540
#39A

Cylinder block diagram

Screw

Part #800-0540

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

Brush 191-1041
#24

Starter parts diagram

Brush

Part #191-1041

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

Repair guides for bottom-mount refrigerators

How to replace a flipper mullion on a French-door refrigerator

How to replace a flipper mullion on a French-door refrigerator

If the flipper mullion breaks or its heater quits working, replace it in 15 minutes using these 4 easy steps.…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a door gasket in a French-door refrigerator

How to replace a door gasket in a French-door refrigerator

The door gasket, often called a door seal, seals the gap around the door to keep the cold air in and the warm air out. R…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a refrigerator water valve

How to replace a refrigerator water valve

Replace the water valve that feeds water to the ice maker and water dispenser if it no longer controls the flow of water…

Read more
Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your lawn & garden engines

View all
Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

Read more
What are the main components of a lawn mower?

What are the main components of a lawn mower?

Learn about the main parts of a lawn mower and when to replace parts.…

Read more

Parts & More