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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.
By Schematic
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Browse Parts for 644 Chainsaws
Handle bar diagram
Primer Ring
Part #6074958
The manufacturer no longer makes this part, and there's no substitute part
Crankcase assembly diagram
Cable Bushing (644 H/651 H)
Part #0066429
The manufacturer no longer makes this part, and there's no substitute part
Chain saw engine diagram
Screw
Part #0010158
The manufacturer no longer makes this part, and there's no substitute part
Screw
Part #0018267
The manufacturer no longer makes this part, and there's no substitute part
Handle bar diagram
Spring Washer
Part #0072140
The manufacturer no longer makes this part, and there's no substitute part
Chain saw engine diagram
Stop Plate
Part #6074409
The manufacturer no longer makes this part, and there's no substitute part
Nut
Part #0021232
The manufacturer no longer makes this part, and there's no substitute part
Chain saw engine diagram
Lawn & Garden Equipment Washer
Part #0034100
The manufacturer no longer makes this part, and there's no substitute part
Handle bar diagram
Rivet
Part #0044280
The manufacturer no longer makes this part, and there's no substitute part
Chain saw engine diagram
Chain 18"
Part #6900884S
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
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
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
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.
Chainsaw bar wear leads to crooked cuts and chain damage. Learn the signs of wear and how to choose the right replacemen…
Tuning up a chainsaw is easier than you think. Follow these steps to clean, inspect, and replace key parts to keep your …
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
Parts & More
Chainsaw
Coffee Maker
Cycling
Dishwasher
Electric Range
Front-Engine Lawn Tractor
Gas Water Heater
Laundry Center
Material Handling
Side-By-Side Refrigerator
Top-Mount Refrigerator
Weight System