27999 Oregon sprocket fits Echo CS-280, CS-290, CS-300 saw 3/8 low profile
Frawleys Saw Shop - loggerchain.net
27999 Oregon chainsaw saw sprocket 3/8 pitch fits Echo CS-280, CS-290, CS-300
This fits Echo CS-280, CS-290, CS-300 and John Deere 25EV
Check bar or sprocket for info to confirm if you have 3/8 pitch like this sprocket.
3/8 pitch 6 (91) tooth crank shaft diameter is 0.315
Part# for additional bearing is 22152
One-piece spur sprockets are durable, economical and simple to use. Unlike rim sprocket systems, the chain-driving teeth and the clutch cup are combined into a single unit on spur sprockets. OREGON spur sprockets are available for all types of chain saws.