Author Topic: Husqvarna 576  (Read 2202 times)

0 Members and 0 Guests are viewing this topic.

Offline mdavlee .

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 1968
  • Karma: 171
Re: Husky 576XP rebuild
« Reply #10 on: September 30, 2016, 07:20:38 pm »
Just unhook the lines and mounts for the carb and pull the whole cylinder and all out then take it apart. The intake bolts on and then the carb bolts on as well.

Offline oljarhead

  • 4 cube
  • **
  • Posts: 48
  • Karma: 7
  • Location: Moses Lake Wa
    • SEWA-Darts
Re: Husky 576XP rebuild
« Reply #11 on: September 30, 2016, 08:03:51 pm »
When I got the saw I didn't break it in  :P  Seems you have to do that with these big saws and I just set to bucking up a large dead Fir and never let the saw cool down or rest.  Just kept getting into the wood, burying the bar and cutting round after round....expensive lesson to learn but I got the parts to rebuild for $181 on Amazon which seemed better than the $650 repair quote I had  :o :o

OK as for the carb -- leave the bolts in and pull it with the cyl head?  I'm guessing that I'll need to remove the linkage or at least the throttle cable and hoses?

Offline mdavlee .

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 1968
  • Karma: 171
Re: Husky 576XP rebuild
« Reply #12 on: October 01, 2016, 11:49:33 am »
Looks like straight gas almost to me through the exhaust port. The ones I've had ran way rich all the time.

Unhook the lines and linkage and unplug the carb.

Offline oljarhead

  • 4 cube
  • **
  • Posts: 48
  • Karma: 7
  • Location: Moses Lake Wa
    • SEWA-Darts
Re: Husky 576XP rebuild
« Reply #13 on: October 01, 2016, 12:17:58 pm »
Nope.  I mixed the fuel myself and after I was told it was too lean based on color I dumped it out into a container and compared to 50:1, 40:1 and 35:1 (approx as I just added more oil to the 50:1 and went beyond 40:1 at the time) and could see no difference.  This only told me there was at least enough oil in the gas to change the color of the gas to that of a 35:1 to 50:1 mix...not much other testing I could do but since I mixed the gas myself and have been mixing gas for many years I'm confident it wasn't the issue (not that I can't make mistaked LOL clearly I can, just look at the following pics ;)

Changed my plans for the weekend which means I had time to break down the saw.


Little fiddling and disconnecting the throttle and the cylinder head came off without removing the carb.


Going to have to clean off the intake etc


A picture is worth a thousand words (or in this case $181)


I think you call that 'toast'


Not a pretty site!


As a guy who used to build sportscars (slalom cars, rally's etc) this is heart breaking...it's no excuse really.  I should have known better than to push a brand new engine like that!!!


I'm guessing I just got it too hot right out of the box.  No break in, no chance to temper or seat or whatever you want to call it...just smoked it.


Hope the piston and cylinder kit came with a gasket.

Have to take a break but when I get a chance I'll remove the rest of the gasket, flush the crank out with 32:1 fuel mix and clean everything up.  Then if I have the gasket I can begin re-assembly with the new top end.

Wish me luck!

Offline Cut4fun .

  • Administrator
  • Nitro Hotsaw
  • *******
  • Posts: 21874
  • Karma: 522
  • OHIO REDNECK Saw Repair Getter Done
    • Redneck Chainsaw Repair
Re: Husky 576XP rebuild
« Reply #14 on: October 01, 2016, 01:25:47 pm »
Did you check your tune at carb when adding more oil?  You may have been lean?  Also dull chain and pushing on one can do that too.
REDNECK Saw Repair Getter Done

Offline Cut4fun .

  • Administrator
  • Nitro Hotsaw
  • *******
  • Posts: 21874
  • Karma: 522
  • OHIO REDNECK Saw Repair Getter Done
    • Redneck Chainsaw Repair
Re: Husky 576XP rebuild
« Reply #15 on: October 01, 2016, 01:26:49 pm »
Wow she was hurt good.
REDNECK Saw Repair Getter Done

Offline oljarhead

  • 4 cube
  • **
  • Posts: 48
  • Karma: 7
  • Location: Moses Lake Wa
    • SEWA-Darts
Re: Husky 576XP rebuild
« Reply #16 on: October 01, 2016, 02:08:11 pm »
Quote
Did you check your tune at carb when adding more oil?  You may have been lean?  Also dull chain and pushing on one can do that too.

New chain, new saw.  If it came running lean that might be a problem but in truth I didn't give it any break in time....I may have learned a valuable lesson here.

Offline oljarhead

  • 4 cube
  • **
  • Posts: 48
  • Karma: 7
  • Location: Moses Lake Wa
    • SEWA-Darts
Re: Husky 576XP rebuild
« Reply #17 on: October 01, 2016, 02:10:04 pm »
Anything I should do when cleaning out the saw?  I read online somewhere (or saw on a video) that you should clean the crank case out with fresh fuel (mixed).  Looks like there isn't much space to pour fuel in there but I'm sure I can sort that out.

Mostly I need to get it cleaned then slowly re-assemble which will require some time looking at schematics since I can't remember exactly the way a couple things came off ;)

Offline Cut4fun .

  • Administrator
  • Nitro Hotsaw
  • *******
  • Posts: 21874
  • Karma: 522
  • OHIO REDNECK Saw Repair Getter Done
    • Redneck Chainsaw Repair
Re: Husky 576XP rebuild
« Reply #18 on: October 01, 2016, 03:05:45 pm »
I always flush crankcase with mix. I use a trigger oil squirt bottle filled with mix. Squirting around bearings etc and then dump. Do again rotating crank and dump. Just something I do and dont know if others do it.

Looks like you got stuffers on the crank. So you wont get much to bearings squirting. Pour some in rotate and dump.
REDNECK Saw Repair Getter Done

Offline oljarhead

  • 4 cube
  • **
  • Posts: 48
  • Karma: 7
  • Location: Moses Lake Wa
    • SEWA-Darts
Re: Husky 576XP rebuild
« Reply #19 on: October 01, 2016, 03:13:07 pm »
Thanks -- that sounds like what I've heard elsewhere and makes sense.  Should help flush out any metal shavings that would have ended up down there.

As it stands now I have no gasket (you would think one would come with the cyl & piston kit I bought) so I'm stuck....in the old days I might have tried RTV or made my own gasket but I think I'll order one online somewhere and hope it doesn't take too long to arrive since I'm impatient!

Here is where I'm at:


Mostly clean with the exception of the carb and I haven't flushed the crank case yet.


Ready for the last stage!  Just need a gasket and I can flush the crank case, install the piston and drop the head on!


I'll use the permatex lube to prep things ahead of time and the magnet bowls really help keep me from losing screws etc! :D

Now to order a gasket, find a squirt oil can, a bin to flush into (what do you guys do with the old fuel?  I'm thinking of mixing with diesel and using to burn slash this fall/winter).

Should have this puppy back together soon (as soon as I can get a gasket) and then the break in begins -- and god help me if I find I was wrong and something else ruined my expensive saw!

 

Related Topics

  Subject / Started by Replies Last post
7 Replies
1682 Views
Last post November 20, 2011, 03:28:21 pm
by SawTroll
Husqvarna 66

Started by Cut4fun « 1 2 3 » Husqvarna

24 Replies
1969 Views
Last post June 19, 2020, 05:49:02 am
by Spike60
0 Replies
231 Views
Last post April 03, 2011, 06:59:07 pm
by adam32
15 Replies
1619 Views
Last post December 15, 2013, 11:46:24 am
by KilliansRedLeo
38 Replies
2788 Views
Last post April 08, 2013, 02:34:05 pm
by Cut4fun
25 Replies
1007 Views
Last post January 01, 2012, 12:13:11 pm
by EHP
13 Replies
748 Views
Last post January 06, 2012, 11:25:23 pm
by Dh1984
Husqvarna 545

Started by Cut4fun . « 1 2 3 4 5 » Husqvarna

48 Replies
3034 Views
Last post July 27, 2014, 08:40:25 pm
by SawTroll
0 Replies
357 Views
Last post November 26, 2016, 02:35:22 pm
by weimedog
0 Replies
123 Views
Last post October 29, 2017, 09:09:27 pm
by weimedog