Brought two more home today......

[TJ the Chainsaw Mechanic]

I'm one super happy guy right now.....brought these two Homelites home today. Unfortunately both are seized but I'm gonna let them soak and hope for the best. One is a 770 gear drive with a 2 speed reduction and the other is a Super 77....not sure if its a Wiz or not. Super excited to see if they will come to life again. Last pic is my whopping pile of 3. Serial numbers posted to for anyone who knows how to figure them out. lol

 

[TJ the Chainsaw Mechanic]

Anyone got any suggestions on a good acid to soak the piston and cylinder on these? Currently got sea foam sitting in them right now.

 

[Mycamaro_68]

Try Coca-Cola. I've freed up V8s with it before.

 

[P.M.P.]

seafoam is some good stuff.
Acetone and trannyfluid 50/50 is awesome

 

[TJ the Chainsaw Mechanic]

Both great suggestions. Thanks! I'm gonna let the sea foam sit in them for a few days and if they won't free with that I'll try something stronger like mentioned.

 

[Sty57]

seafoam is some good stuff.
Acetone and trannyfluid 50/50 is awesome

+1 on the Acetone and trannyfluid 50/50

 

[Sty57]

I believe the 770G was made in 1962 from the IPL's I have.
Homelite changed the S/N numbering system a few times over the years.

 

[Sty57]

I have put the Acetone and trannyfluid mix in them and let them sit for a few days. Then take a heat gun or a torch and warm up the cylinder to get things moving.
I've had them where the recoil was froze up and holding everything tight too.

 

[Stump Shot]

seafoam is some good stuff.
Acetone and trannyfluid 50/50 is awesome

+1 on the Acetone and trannyfluid 50/50

+2 Never failed to unlock rusted piston rings with this concoction. Once after a good soak, you get it to wiggle just a little bit back and forth, and it's all over after that.

 

[brandonstclair20]

I freed up a seized poulan 3700 with PB blaster and it only took about 5-6 hours and it freed up where you could turn it over with the starter.


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[TreeLife]

I like to soak cylinders in marvel mystery oil myself...

 

[Marshy]

I've never tried to free a piston with seafoam but I did soak a nasty gummed up carb in it and it didn't do squat for me. I'd go with another choice mentioned before long. Kroil would be my first choice.

 

[Al Smith]

Sure fire method that it will either come or bleed .First use some type penetrating oil for about a week .Then knock the center out of an old spark plug and braze a grease zert in it .A grease gun puts out 5000 PSI,that piston will either move or blow the cylinder off .You can use oil in the gun instead of grease and get the same results----if the piston is above the ports or it won't work .
I just did this maybe early this spring on a Partner P100 that is in the Partner section with pictures .

 

[TJ the Chainsaw Mechanic]

Soaking both saws with sea foam deep creep right now. Will check them in a few days. If that doesn't work I'll try PB blaster....if that don't work....marvel mystery oil....if that don't work.....cylinders are coming off and gonna have to see inside better. Funny thing is I have the sea foam, pb blaster, and marvel oil all on the shelf. Be interesting to see if one works better than the other.

 

[Cracker Boy]

Marvel mystery oil and diesel fuel works real well diesel hates rust and both are detergergents

 

[Cracker Boy]

Every once in a while i put an ounce of mystery oil to a gallon of my mixed gas you otta see the smoke and it will clean yor running saws out too.all that carbon

 

[brandonstclair20]

Marvel mystery oil and diesel fuel works real well diesel hates rust and both are detergergents

I soaked an old rusted up crescent wrench in diesel for a month and it freed up.


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[jakethesnake]

I've had luck w blaster. All I've ever tried though

 

[breese]

Trans fluid
Then I put a breaker bar on the crank with a 5lb weight attached to it.
When the breaker bar and weight bottom out... its free

 

[BrokenSVT]

Easy on the Marvel Mystery Oil right now. Unless you have some old, known to be good laying around. There's currently a recall on it. Metallic particles or some such in it.