The chainsaw would require a 20" chainsaw bar for a .325 pitch, .050 gauge and 78 drive links.
ECHO, Gas-Powered Rear Handle Chainsaw, Bar Length 20 in, Engine Displacement 50.1 cc, Model# CS-4920-20

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- 50.1 cc professional-grade, 2-stroke engine for outstanding performance and durability
- 20in. bar features a 3/8in. chain pitch
- Purge bulb delivers fresh fuel to carburetor for easier starts
- Automatic clutch-driven oiler operates only when the chain is moving to reduce oil consumption
- Side-access chain tensioner provides easy chain adjustments
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