first time portin...

I know nothing.... But I think I would smooth er flaten out the ridge in this pic.

 

Isnt that ridge suppose to be there? The factory has it right?
I think it may have something to do with disturbing air?

 

Thank you fur the input...oh chit...I hogged on that too...

 

Ok...I pulled the juck off the project saw...it dosent have humps at all. So will it mater also,at the top of the jug, it is clean except fur a trail leadin to the spark plug. Why is that...thank you...

 

Could that trail be fuel blowin by the rings...thank you...

 

I'd bet it's at the back side of the flame head, cooler there and causing oil to condense there?

 

Thank you fur your input...bad ringss...there is some markin on the inside of the jug...it travels clear to the top of the head.,, the saw never smoked or had any power loss...

 

The exhaust side is hotter. That's part of what causes that build up above. Smooth that hump out in the transfer.

 

Take sand paper to that transfer and clean it up.

 

Thank you fur the input...so take this hump out and clean it up with sand paper...what grit...

 

Yea those are scratches. My saws dont have carbon and junk like that in the head. Bad tune, junk oil?

 

I start with 220 on a split mandrel. You can work up from there and go to scotchbrite.

 

Thank you fur the input...so a bad tune or bad oil causes this...or is it the scratches that allow the fuel and oil to blow by the rings...the scratches end at the head where the material begins to the spark plug....thank you...

 

The scratches probably end where ever that point of the piston stops?

Yea bad tune can cause scratches. If your too lean there will not be enough fuel with oil in it to lube the saw.

Bad oil can cause carbon and crud as it hardens and turns to gunk. Good quality oil stays liquid and does not coke up. Use a good synthetic oil.

 

Thank you fur your input...so start with 220...and that is to smooth the shoulder out...should I hog out more of the shoulder...thank you..

 

Thank you fur the input...what is a good synthetic oil...do you think the jug can be reused....thank you...

 

The 220 is to clean the bore. Smooth that with a carbide

 

I am no expert but can you feel the scratches? Or is it transfer ? Some guys lost good videos of removing AL transfer off the jugs.

Oil ....im not sure if we want to start an oil war. Any full synthetic is probably fine. Lucas 2 stroke is a semi syn but has been said to be good by folks I would trusts opinion. I have used and am using Amsoil. It seems good. Many like Belray, and pretty much any of the racing two stroke is fine. I think I will try the lucas when I use the last pint and a half of the amsoil up that I have. I can get lucaus local and its like $10/qt.

 

Thank you fur your input...mdavlee please have patience with me...lol...the 220 is fur this bore... and the carbide is fur the shoulder work on this one... Right???

 

Yes