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Onan B48G-GA020/3858C gas engine Parts
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.
By Schematic
SELECT DIAGRAM
Browse Parts for B48G-GA020/3858C Gas Engine
Cylinder block diagram
Bearing
Part #101-0450
The manufacturer no longer makes this part, and there's no substitute part
Carburetor diagram
Screw
Part #146-0247
The manufacturer no longer makes this part, and there's no substitute part
Screw
Part #815-0194
The manufacturer no longer makes this part, and there's no substitute part
Fuel pump parts diagram
Screw
Part #142-0540
The manufacturer no longer makes this part, and there's no substitute part
Ignition breaker box diagram
Scr Br Bx Cr
Part #815-0358
The manufacturer no longer makes this part, and there's no substitute part
Carburetor diagram
Shaft
Part #146-0281
The manufacturer no longer makes this part, and there's no substitute part
Cylinder block diagram
Valve
Part #123-1175
The manufacturer no longer makes this part, and there's no substitute part
Gearcase diagram
Gear Case
Part #103-0593
The manufacturer no longer makes this part, and there's no substitute part
Fuel system diagram
Lawn & Garden Equipment Engine Breather Tube
Part #123-1429
The manufacturer no longer makes this part, and there's no substitute part
Cylinder block diagram
Plug
Part #517-0120
The manufacturer no longer makes this part, and there's no substitute part
Symptoms for gas snowblowers
Choose a symptom to see related snowblower repairs.
Main causes: stale gas, clogged carburetor, clogged or broken fuel line, dirty spark plug, bad rewind starter, incorrect…
Main causes: punctured tire, damaged rim…
Main causes: snow build-up in chute, chute drive mechanism failure, bad chute control assembly…
Main causes: clogged chute, damaged auger blades, broken shear pins, worn auger belt, damaged gear case, engine problems…
Things to do: replace the spark plug, change the oil, rebuild the carburetor, adjust valve lash, adjust or replace the b…
Main causes: dirty carburetor, stale fuel…
Main causes: clogged chute, snow build-up in auger housing, broken auger shear pins, auger drive belt needs adjustment, …
Main causes: broken shear pins, worn or loose auger drive belt, auger drive cable failure, damaged auger, bad gear case…
Main causes: loose drive clutch cable, damaged drive clutch cable, worn friction disc, scraper blade scraping the ground…
Repair guides for gas snowblowers
These step-by-step repair guides will help you safely fix what’s broken on your snowblower.
How to adjust snowblower skid shoes
To prevent snowblower auger and shave plate damage, adjust the skid shoes regularly to keep the shave plate ¼-inch high.…
Repair time and Difficulty
15 minutes or less
How to rebuild a snowblower carburetor
Rebuild the carburetor on your snowblower if the engine isn't getting fuel.…
Repair time and Difficulty
45 minutes or less
How to replace a snowblower 4-way chute control assembly
Replace the 4-way chute control assembly on your snowblower if it’s damaged.…
Repair time and Difficulty
30 minutes or less
Effective articles & videos to help repair your lawn & garden engines
Use the advice and tips in these articles and videos to get the most out of your snowblower.
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
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