Mine is mix and matched with a Husky clutch cover
Just saying... I know you said it was minty, but that could be a solution if you want to run it.
I just got a super 2 ad could not find anything on it. 14 400rpm thank you. I've been trying to tune it but I was afraid of over revving it. Is there anything else particular to tuning this saw?Differences
The 625 is the same thing basically as the Husky 61. Some differences but a 48MM, 61cc open port motor. Some gains by porting but still open port. Probably best left stock. The 630 is the same cc but with closed port cyl and windowed piston. Way better choice to port IMHO. I have (as you can see in my sig) a 630 Super II that I ported to about 58% and that runs real strong, turns 14,400 easy, 4 stroking hard. Very nice saw to use. I don't have a complete 670 but they are as you said, 50MM bore 67cc and are about the same as the Husky 268XP. Again Husky and Jred set things up a bit different but are about the same in the end. Again as you see (in my sig) I have a 61/268XP conversion that I ported to 63% and added a 670 (250A Tilly) carb which was a little tricky but doable and this saw is much more powerful than my 630, as it should be. I think you would be happy with porting the 630 or the 670 but I would probably not bother porting the 625. If it's in as good shape as you say it will cut good as is and will last for yrs with normal care.
14,400 is for my ported saw....13,000 is max WOT no load for a stock 630. Mine runs decent when tuned to 13,000 but burns a ton of fuel.....it runs better when tuned to 14,400 and the economy is more in line whith a stock 630. Generally most folks will tune 500 below max WOT on a stock saw. You won't over rev your stock saw RPM wise tuned to 14,400 but that is to lean and you will risk burning it up when under load. Stock I'd tune it to 12,500 -13,000 to remain safe.
Good information, thanks. So if I'm understanding then it isn't the speed itself that damages a saw but what brought it to that speed? This is my first saw tbh. Sounds crazy but I needed a firewood saw and it was a great deal and in excellent condition. I I just need to learn how to keep it that way.
If you are new and don't know how to tune by ear I suggest buying a tach. Fastack is a decent brand......cheap insurance. Adjust the "H" to achieve the desided rpm......clockwise is lean and it will speed up....counterclockwise is rich and will slow it down.
Came in a few days ago lol. Following the owners manual I left it at H 1¼ until now when I can check. I'm trying to listen for that 4 stroking at wot but I wanted to wait. Based on how it goes and the readings from the tachh, my temp gun and how the plug looks then I'll be confident that it's running fine until I get used to the sound. And from all I've read it sounds like I should be using a more oil rich mix so I'll have to adjust for that too. And the 20" bar should slow the rpms slightly from the stock configuration. I think I'm soaking it all in well, she really is a beauty
