Any info on rebuilding my Johnsered 625 ?

[scully]

This was my first "high dollar" saw I ever bought . It owes me nothing but represents something that made me a ton of $ when I was jobless and knocking on doors for tree work . I will never part with it !  It still runs fine but it has to be getting tired ! It wouldn't start last time I tryed it . I think the fuel line is dry rotted is all . But what if I just wanted to build this thing ? Can I get a jug and piston set or should I go further ? I figure some of you here can turn me onto the tricks to lettin my ol dog live again like the day I first fired it up and heard them sweet rev's !  I am not opposed to soupin it up a tad . Thanks in advance .

[old 030]

i put a husky 272xp top end on mine, it really runs well now!!!!!!!, some mods are needed for the swap, but for the most part easy to do...............  

[scully]

now thats what I'm talkin about !

[celliott]

If it still was running, the jug is probably fine. New piston and ring should be adequate. If the fuel line is dry rotted, I'd replace the line, fuel filter, and think about rebuilding the carb as well.
I'm not sure, but a Jonsered 670 top end might bolt right up to that saw.

[sablatnic]

The crankshaft seals are a weak spot in these saws; I'd replace them too.