- Joined
- Dec 10, 2004
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- 2,095
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I have one of each that I am working on. Same stroke and bore, so what am I missing other than some cosmetic changes like shutoff switch, clutch, oiler, etc. Did they have the same power? Why would you build two similar saws from a marketing perspective? Does only the 630 have the two piece ignition or was that a change in the production cycle? At least with the 670, you have a difference in cc's. I need some help getting out of my state of confusion.