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Homelite
Gas Chainsaw

Model # Z3850BC Official Homelite chainsaw

Here are the diagrams and repair parts for Official Homelite Z3850BC chainsaw, 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 139 parts  |
Crankcase 04909
#20

Engine internal, oil pump diagram

Crankcase

Part #04909

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

Housing A08892
#11

Engine housing, fuel tank, oil tank diagram

Housing

Part #A08892

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

Grip 07588
#6

Starter, ignition diagram

Grip

Part #07588

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

Shaft Seal 04920
#14

Engine internal, oil pump diagram

Shaft seal

Part #04920

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

Spring 08898
#8

Handles diagram

Spring

Part #08898

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

Guide Plate 07405A
#12

Clutch/chain brake/drive case cover diagram

Guide plate

Part #07405A

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

Washer 84008
Washer

Part #84008

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

Drum Sprocket A09024
#26

Clutch/chain brake/drive case cover diagram

Drum sprocket

Part #A09024

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

Grommet 07587
Grommet

Part #07587

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

Short Block A08672
#5A

Engine internal, oil pump diagram

Short block

Part #A08672

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

Symptoms for gas chainsaws

Choose a symptom to see related chainsaw repairs.

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Why won't my chainsaw start?

Main causes: stale gasoline, cracked fuel lines, dirty carburetor, damaged spark plug, worn piston rings…

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Why does my chainsaw run roughly?

Main causes: bad gas, engine needs tune up, cracked fuel lines, dirty carburetor…

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What should I do if my chainsaw leaks gas?

Main causes: cracked fuel lines, leaky carburetor seals, damaged fuel tank cap, cracked fuel tank…

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Repair guides for gas chainsaws

These step-by-step repair guides will help you safely fix what’s broken on your chainsaw.

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How to rebuild a chainsaw carburetor

How to rebuild a chainsaw carburetor

If your chainsaw isn't running well, a dirty carburetor could be the problem. You can take it apart, clean it and rebuil…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace chainsaw fuel lines

How to replace chainsaw fuel lines

The fuel line on a chainsaw becomes brittle over time and can crack. Replacing it doesn't require a lot of DYI experienc…

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Repair difficulty
Time required
 15 minutes or less
How to replace a chainsaw carburetor

How to replace a chainsaw carburetor

If the engine won't start even though there's fuel in the chainsaw, the carburetor could be the problem. Sometimes, it's…

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Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your chainsaws

Use the advice and tips in these articles and videos to get the most out of your chainsaw.

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What are the most common replacement parts for chainsaws?

What are the most common replacement parts for chainsaws?

Learn about the most common replacement parts for chainsaws and how they can help you fix chainsaw problems.…

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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.…

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