Gas Chainsaw

Model # 645 Official Solo chainsaw

Here are the diagrams and repair parts for Official Solo 645 chainsaw, as well as links to manuals and error code tables, if available.

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Browse Parts for
645 Chainsaws
Bar 15" 6900343
#200A

Cylinder/ignition module diagram

Bar 15"

Part #6900343

Replaced by #160VXLGK095

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Manufacturer substitution
This part replaces 6900343. Substitute parts can look different from the original.
In Stock
Bar, 18-in 6900861
#200B

Cylinder/ignition module diagram

Bar, 18-in

Part #6900861

Replaced by #180VXLGK095

?
Manufacturer substitution
This part replaces 6900861. Substitute parts can look different from the original.
In Stock
Throttle Axle Kit 0510953
#222

Cylinder/ignition module diagram

Throttle axle kit

Part #0510953

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

Stop Lever 6074916
#153

Cylinder/ignition module diagram

Stop lever

Part #6074916

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

Right Cutter 0540279
#209

Cylinder/ignition module diagram

Right cutter

Part #0540279

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

Washer 0030101
#194

Cylinder/ignition module diagram

Washer

Part #0030101

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

Screw 0018340
#60

Cylinder/ignition module diagram

Screw

Part #0018340

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

Full Hose 0064319
#134

Cylinder/ignition module diagram

Full hose

Part #0064319

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

Manifold 6074994
#144A

Cylinder/ignition module diagram

Manifold

Part #6074994

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

Screw-driver 0080494
#215

Cylinder/ignition module diagram

Screw-driver

Part #0080494

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.

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

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

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

Repair guides for gas chainsaws

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

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…

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…

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…

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.

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.…

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.…