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Solo 644 gas chainsaw

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.

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Browse Parts for 644 Chainsaws

  • Fan Wheel, Assembly (644 H/651 H) for Solo 644 - Part 2400275

    Crankcase assembly diagram

    Fan Wheel, Assembly (644 H/651 H)

    Part #2400275

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

  • Washer for Solo 644 - Part 6042817

    Chain saw engine diagram

    Washer

    Part #6042817

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

  • Seal for Solo 644 - Part 0054251

    Chain saw engine diagram

    Seal

    Part #0054251

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

  • Spark Plug for Solo 644 - Part 2300730

    Chain saw engine diagram

    Spark Plug

    Part #2300730

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

  • Bearing for Solo 644 - Part 0052255

    Chain saw engine diagram

    Bearing

    Part #0052255

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

  • Adjuster for Solo 644 - Part 6300208

    Chain saw engine diagram

    Adjuster

    Part #6300208

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

  • Lock Lever for Solo 644 - Part 6074292

    Handle bar diagram

    Lock Lever

    Part #6074292

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

  • Rim for Solo 644 - Part 3038420

    Chain saw engine diagram

    Rim

    Part #3038420

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

  • Pump Housing for Solo 644 - Part 6400209

    Chain saw engine diagram

    Pump Housing

    Part #6400209

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

  • Screw for Solo 644 - Part 0010158

    Chain saw engine diagram

    Screw

    Part #0010158

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

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…

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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