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Interesting thread. Thinking about building the 660 kit. About how long does it take to put together?

Would this be a good work saw? Or ported for performance over longevity?

Any other pics?

I actually bought a used one from Tradin Post before this new one and it was doing the same thing. This saw seems smoother running and less vibration than my 346's. If I can get the 550xp to perform properly I'll ditch my 346's!

Thanks for your replies. I'll run a few more tanks through it. Maybe after it's broken in it'll "auto tune" itself. If not I'll take it in for diagnosis. I was wondering how common tjis might be.

Just bought a new 550xp. I've only run 3 tanks through it, but from an idle sometimes it will die when revving to start a cut. If it wasn't AT I could just adjust the carb. Anyone else experience this? What can be done about it?

Running Mystik synthetic oil, 50:1 with 93 octane fuel. I mix 5 gal. weekly & all saws get same mix. Video of a saw that won't start wouldn't tell much or be very interesting. Probably ran 5 tanks through it, but wouldn't idle. Always felt like it was holding back on top end too, but of there'...

Could I trade up on one I got from you a few months ago? Barely ran when I got it, replaced the fuel filter, ran okay but wouldn't idle. Shelved it, cause I need reliable working saws.

This is a great thread! I have a stock 7900 & 6400bb that have both been down for awhile because I didn't want to pay the $120 my dealer wants for a coil. And yes, I believe this a problem with these models. Has to be more than coincidence for this to happen on both saws.

I'd like to buy it, if still available.

What's shipping to 60021?

I'll take it with the new husqvarna bar & chain for $365. I can PayPal you this morning if you like. - Eric send email address to [email protected]

How much for PHO? I'd like to run 16" - 3/8

Need a new filter which is better? And who has em?

Yes, I did retune, but , the 2 redmax 3200's I MM only lasted a year. The 2 that I'm running now unmoddedhave lasted 2 ears still running strong. I was told this summer that you can't just do a MM on a stratified engine without other mods? The 445 is light with good antivibe, I would just...

I've heard that this saw responds well to modifications. Haven't found anything in the search. I did a muffler mod on another stratified saw (Red Max) and they didn't last as long before scoring the cylinders.

What advantage is there to window or wi dowless piston?

I have two 5100's that I'd like to replace/repair the pistons on. Does this piston look like it can be polished up? Anybody have a couple of used pistons in decent shape they'd like to sell? I've got new rings for 'em.

Still having a hard time starting it. I don't have a rebuild kit for the carb and really need to get it going to start a job with it. Took the carb apart and the diaphragms were okay, shot carb cleaner thru all orifices with jets out. Put it back together, got it started w/o the covers on...

About 10 years ago, I remember a saw rep telling me that the difference in material cost from the smallest to the largest saw they made was $25.