SawTroll
Information Collector
Obviously the change is in the cylinder porting, which has increased hp for the same cc. Basically, it is kind of what happened to the 510 to become the 5105, and what is coming next year when the 460 becomes the 4605. The 4605 is already listed on the euro Dolmar site, making 3.5hp. Also, the mufflers should be SLR style, which is what is coming on the new 6400-7900 saws. Meets emissions with no muffler maintenance needed. They are not cats!
Not true - the 5105 came from the 5100/5000, and the 4605 from the 4600. The 460, 500 and 510 has an alu case that is heavier, and are not pro saws.
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