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Earthquake
Gas Chainsaw

Model # CS4518 Official Earthquake chainsaw

Here are the diagrams and repair parts for Official Earthquake CS4518 chainsaw, as well as links to manuals and error code tables, if available.

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  • 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”.

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

Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 29 parts  |
Spark Plug 35906

#21

All parts diagram

Spark plug

Part #35906

$20.80
In Stock
Earthquake Carburetor Kit 13539

#11

All parts diagram

Earthquake carburetor kit

Part #13539

$71.62
In Stock
Earthquake Guide Bar 18 In. Chainsaw 845122

#22

All parts diagram

Earthquake guide bar 18 in. chainsaw

Part #845122

$67.93
In Stock
Earthquake Chainsaw Ignition Module 14233

#8

All parts diagram

Earthquake chainsaw ignition module

Part #14233

$40.67 | 
13% OFF Phone Price : $46.67
In Stock
Earthquake Air Filter 845117

#10

All parts diagram

Earthquake air filter

Part #845117

$28.17
In Stock
Kit Guide Bar Base 14263

#27

All parts diagram

Kit guide bar base

Part #14263

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

Assembly Clutch W/washer 13536

#14

All parts diagram

Assembly clutch w/washer

Part #13536

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

Kit Engine Gaskets 14266

#30

All parts diagram

Kit engine gaskets

Part #14266

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

Kit Bucking Spike 14203

#1

All parts diagram

Kit bucking spike

Part #14203

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

Kit Oil / Fuel Lines 14258

#25

All parts diagram

Kit oil / fuel lines

Part #14258

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…

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.

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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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