Is this jug toast? 394xp cylinder

[JC360]

Cool thanks man.
I was reading something last week where they were useing hydrochloric acid to strip chrome plate. Didn't want to muck up a cylinder for lack of knowledge.

 

[IanB22]

Ok, so didn't see how 'much' I should have cleaned up the jug. I went this far, put her back together and she is running fine on the new piston. Just need to identify a break-in procedure.

Zip-tie ring compressor worked perfect!

And here she is after first start and running a bit. Can't even pull the cord without the decompression button!

So what's the break in for new rings and piston kit?


394xp w/ 33" & 42" Bars - Full Comp Full Chisel - 36" Granberg Alaskan Mill
455 Rancher w/ 20" Bar - Semi Chisel
Husqvarna Forestry Helmet & Full Wrap Chaps

 

[MGoBlue]

I went this far, put her back together

Just to clarify, you put it back together lookin' like that? ^^^

 

[IanB22]

Yup...to be honest, at the time this morning, I thought I was not removing aluminum but was actually removing the cylinder coating. This was not the case as it turns out, but it made me tentative to keep using the Emory and sand paper after it felt all very smooth.

Maybe she won't last long? But So far I have run 2 tanks of gas through. All good running rich and 40-1 at wot in 20inch oak. Made 39 cuts in the oak on the two tanks running the 42" bar.


394xp w/ 33" & 42" Bars - Full Comp Full Chisel - 36" Granberg Alaskan Mill
455 Rancher w/ 20" Bar - Semi Chisel
Husqvarna Forestry Helmet & Full Wrap Chaps

 

[kz1000]

At least seven members that have read this think that Muriatic Acid is for sharpening there own inner being.

 

[IanB22]

I guess I just run it, and maybe pick up the 395 conversion or even the 58mm big-bore conversion from ebay.
If I do all this work again, it should be for more power .

 

[MikeAm]

I guess I just run it, and maybe pick up the 395 conversion or even the 58mm big-bore conversion from ebay.
If I do all this work again, it should be for more power .

Hows that saw working for you now?

 

[IanB22]

Been working great...milled 28" silver maple last week and spent about an hour cutting....broke in the new piston by running three tanks of gas one-after-the-other cross cutting and she was a champ....guess I got lucky? The big change was putting the new HD air filter on...holy god she needed more fuel! That thing can suck some air.


394xp w/ 33" & 42" Bars - Full Comp Full Chisel - 36" Granberg Alaskan Mill
455 Rancher w/ 20" Bar - Semi Chisel
Husqvarna Forestry Helmet & Full Wrap Chaps

 

[cus_deluxe]

it is astounding to me that it held up to any amount of milling. I am subscribed to this thread until we find out how long that cylinder lasts

 

[burnses]

looks like the plating was gone.....

 

[mopar4u]

Cylinder May last a long time but compression may suffer.

I'm a snowmobile guy and all we do is hone cylinders. No sandpaper. Why not hone a chainsaw cylinder?

 

[pioneerguy600]

Cylinder May last a long time but compression may suffer.

I'm a snowmobile guy and all we do is hone cylinders. No sandpaper. Why not hone a chainsaw cylinder?

Are they nicasil plated cylinders?

 

[mopar4u]

Are they nicasil plated cylinders?

Yup