The 572XP Update Thread

[Eccentric]

It touched me right in the feels....

 

[huskyboy]

I checked both the 572xp and 372xp here with a tach. They were both at 2600-2800rpm. Maybe 572xp just has a choppier lower sounding idle than a 372xp because of the longer stroke? No idea honestly. I just cut wood with my saws.

I took tach shots of the idle speed on the 572xp and ms 462c I was running yesterday. Normally I wouldn’t care, but I was inspired to investigate. They both stayed in the range of 2600-2900rpms. They both sound different at idle but I think that has to do with the motor/muffler design.

 

[John7478]

I took tach shots of the idle speed on the 572xp and ms 462c I was running yesterday. Normally I wouldn’t care, but I was inspired to investigate. View attachment 288009View attachment 288010 They both stayed in the range of 2600-2900rpms. They both sound different at idle but I think that has to do with the motor/muffler design.

Yep, the 572 has a deep muffler tone

 

[afleetcommand]

Can't beat that even with a screw driver....where I set all my saws. Been running the 562's this winter and liking the fact a 20-30 second warmup at high idle is all I need when the temps on a given day are a lot different than the last day I run them, Had a 15 degree day on one, it tuned itself on that day from the 30 degrees day before, and yesterday from the 15 degree day to the 60 degree day. No fuss , just let them warm up and cut like its a rented saw.

 

[Motorka]

Are you using 32:1 oil ratio on autotune saws ?

 

[afleetcommand]

Yes, I use 32:1 with the Husqvarna "blue cap" oil vs. the red / orange cap "full synthetics" on all my saws. Have for years, no issues. Different oil's do have different properties so what I do with the oils available to me may not translate directly to the oils available to u. Anywhere from 32:1 - 50:1 works with the right oils, would follow what ever the dealer is willing to support with warranty . I still use 32:1 for my reasons but not going to paste them all around on the forums or get into yet another oil "discussion"

 

[ZERO]

32:1 not exactly environmentally friendly!

Shhhhh ... I use that same ratio on all my autotunes, have yet to have a problem.

Nice to see great minds think alike.

 

[Catman]

My 2 Husky Autotunes are run on Honda HP2 at 40:1. Screamers!!

 

[HYPERSAWS]

75:1

 

[Funky sawman]

Omg here we go another oil thread! I run 45:1 only on Mondays, then 40 to 1 rest of the week cause I'm woke up and ready to saw like a mad man on Tuesday

 

[M2theB]

Haven’t dug into my issue until I was hipped to someone else’s problem today. I followed up. This saw has less than 10 tanks through it. If this isn’t the issue, I’d be surprised. I’ll be disappointed if it is.

 

[5000+]

Haven’t dug into my issue until I was hipped to someone else’s problem today. I followed up. This saw has less than 10 tanks through it. If this isn’t the issue, I’d be surprised. I’ll be disappointed if it is.

What leaked?

 

[M2theB]

That’s a pop off test of the carb from the filter connection
Carb leaked at the metering valve. Not a great video, but I can hear the blow by in the Venturi

 

[huskyboy]

That’s a pop off test of the carb from the filter connection
Carb leaked at the metering valve. Not a great video, but I can hear the blow by in the Venturi

Time to get the cotton ear swab and toothpaste. Polish the needle seat. Spray out with carb cleaner. Maybe stretch the spring a little to give it more pressure. Retest. I like at least 15-20psi before it pops off to keep tank pressure in the summer heat from forcing the needle open.

 

[huskyboy]

This is assuming by metering valve... that you mean the needle seat area. The nozzle is a entirely different part. If the nozzle is leaking you’ll need a new one of those. Unfortunately.

 

[M2theB]

Time to get the cotton ear swab and toothpaste. Polish the needle seat. Spray out with carb cleaner. Maybe stretch the spring a little to give it more pressure. Retest. I like at least 15-20psi before it pops off to keep tank pressure in the summer heat from forcing the needle open.

At this point, I’m glad to find this. It’s boxed in I think.

 

[M2theB]

Surprised it wouldn’t pass pressure test. Wasn’t too surprised to find this when I opened it, given the test.
But still surprised this happened on a 10 tank or less saw.

 

[huskyboy]

I’d be looking at two things after seeing that. #1 checking to see if your fuel filter is still on the fuel hose and changing the filter. #2 looking in your gas storage can to see if there is debris in it.

 

[BonScott46]

Omg here we go another oil thread! I run 45:1 only on Mondays, then 40 to 1 rest of the week cause I'm woke up and ready to saw like a mad man on Tuesday

Best answer!

 

[Fullkip]

I have seen the same thing, almost plugged screens on low hour saws.
My guess is that there was a bad batch of fuel filters. That junk can ruin a main nozzle fast. Way to many main nozzle failures in the past year.
I have seen one on a 572 and several on 562s...