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

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Homelite
Gas Chainsaw

Model # Z3850-18 INCH Official Homelite chainsaw

Here are the diagrams and repair parts for Official Homelite Z3850-18-INCH chainsaw, 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 116 parts  |
Tapite 82539
#15

Carburetor-muffler-air filter diagram

Tapite

Part #82539

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

Pivot Lh 07393
#7

Chain brake-drive case cover diagram

Pivot lh

Part #07393

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

Grommet 07587
#10

Fuel tank-oil tank diagram

Grommet

Part #07587

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

Short Block A08672
#5A

Engine internal diagram

Short block

Part #A08672

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

Roll Pin 200 95395A
#20

Chain brake-drive case cover diagram

Roll pin 200

Part #95395A

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

Truss Head Screw 82597
#15

Handles diagram

Truss head screw

Part #82597

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

Retaining Ring 69599
#3

Chain brake-drive case cover diagram

Retaining ring

Part #69599

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

Heat Dam Gasket 06840
Heat dam gasket

Part #06840

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

Chainsaw Carburetor Assembly 06839
Chainsaw carburetor assembly

Part #06839

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

Throttle Lock Pin 07388
#7

Handles diagram

Throttle lock pin

Part #07388

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.

View all

What should I do if my chainsaw leaks gas?

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

Read more

Why does my chainsaw run roughly?

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

Read more

Why won't my chainsaw start?

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

Read more

Repair guides for gas chainsaws

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

View all
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 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…

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…

Read more
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.

View all
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.…

Read more
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

Parts & More