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Solo 644 gas chainsaw Parts

Here are the diagrams and repair parts for Solo 644 gas chainsaw, as well as links to manuals and error code tables, if available.

Solo 644 gas chainsaw
By Schematic
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This is the number corresponding to the part on the diagram / schematic

Browse Parts for 644 Chainsaws

  • Heating Foil, Assembly (644 H/651 H) for Solo 644 - Part 0084574

    Crankcase assembly diagram

    Heating Foil, Assembly (644 H/651 H)

    Part #0084574

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

  • Throttle Axle Kit for Solo 644 - Part 0510953

    Chain saw engine diagram

    Throttle Axle Kit

    Part #0510953

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

  • Piston for Solo 644 - Part 2200265

    Chain saw engine diagram

    Piston

    Part #2200265

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

  • Repair Kit for Solo 644 - Part 0510951

    Chain saw engine diagram

    Repair Kit

    Part #0510951

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

  • Chain Sprocket for Solo 644 - Part 3500372

    Chain saw engine diagram

    Chain Sprocket

    Part #3500372

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

  • Chainsaw Fuel Tank Cap for Solo 644 - Part 2700353

    Chainsaw Fuel Tank Cap

    Part #2700353

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

  • Grommet for Solo 644 - Part 0066314

    Chain saw engine diagram

    Grommet

    Part #0066314

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

  • Bearing for Solo 644 - Part 0050188

    Chain saw engine diagram

    Bearing

    Part #0050188

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

  • Cover, Red (644/651) (see Note) for Solo 644 - Part 6073682

    Handle bar diagram

    Cover, Red (644/651) (see Note)

    Part #6073682

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

  • Shrt Cir Wir for Solo 644 - Part 0084702

    Chain saw engine diagram

    Shrt Cir Wir

    Part #0084702

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

Most common symptoms to help you fix your chainsaws

Choose a symptom to see related chainsaw repairs.

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

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

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 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 time and Difficulty

 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 time and Difficulty

 15 minutes or less
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 time and Difficulty

 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.

When to replace a chainsaw bar

When to replace a chainsaw bar

Chainsaw bar wear leads to crooked cuts and chain damage. Learn the signs of wear and how to choose the right replacemen…

How to tune-up a gas chainsaw

How to tune-up a gas chainsaw

Tuning up a chainsaw is easier than you think. Follow these steps to clean, inspect, and replace key parts to keep your …

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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