Timing advance on a 10mm 044

[foragefarmer]

I did one and and the saw doesn't seem to like it. It doesn't pop or kick back but it doesn't like to idle. It is really hard to tune at idle. I set it back to stock and it idles fine, re-advanced it and the idle is poor again. Also the advance doesn't seem to have improved performance.

Would it be worth putting a timing light on this saw and seeing where the timing is? And if so does anyone know what these saws like as far as timing?

Jug is stock KS, I had to make a gasket for the saw and squish is .022ish. DP cover.

 

[wigglesworth]

I believe it's 27* advanced for most Stihls, with the exception being some early 066/064's, and they were at 32*.

From what I've found, some saws like more advance, and some just don't....

How much did you advance it?

 

[foragefarmer]

I believe it's 27* advanced for most Stihls, with the exception being some early 066/064's, and they were at 32*.

From what I've found, some saws like more advance, and some just don't....

How much did you advance it?

I filed about .018 off the key.

 

[jmssaws]

Did you advance it the right way?
018 shouldn't cause problems

 

[foragefarmer]

Yes, this isn't my first dance, just the first time without love.

 

[jmssaws]

Try 010

 

[foragefarmer]

Try 010

Gonna try this.

See what it gets me.

 

[foragefarmer]

 

[foragefarmer]

I believe it's 27* advanced for most Stihls, with the exception being some early 066/064's, and they were at 32*.

From what I've found, some saws like more advance, and some just don't....

How much did you advance it?

So 27 is stock or 27 is where they want to be?

 

[jmssaws]

I would think 27 is stock.

 

[wigglesworth]

27 is stock.

 

[foragefarmer]

I would think 27 is stock.

That is how I was reading it but that is not the reading I got with the timing light with a stock key in so I am asking for confirmation.

 

[jmssaws]

That is how I was reading it but that is not the reading I got with the timing light with a stock key in so I am asking for confirmation.

What did you get?

 

[foragefarmer]

That is the funny thing it is reading retarded off stock @ 31.5. So by that I should cut the key even more like .010 or .015.

 

[jmssaws]

010 more than the 018? 030 total?

 

[MustangMike]

????? If your saw likes the timing where it was, I would leave it alone. Both my 10 mm 044 (KS jugs) liked a 20/1000 advance.

Are you running a dp muff and HD-2 filter? These things can make a difference (I am on both).

 

[foragefarmer]

010 more than the 018? 030 total?

Well If stock is 27* and .020 advances it 6* on average then you would be at 21*. So at 31.5* you need to knock off 10.5* to get it to 21*.

 

[jmssaws]

So 030?

 

[foragefarmer]

????? If your saw likes the timing where it was, I would leave it alone. Both my 10 mm 044 (KS jugs) liked a 20/1000 advance.

Are you running a dp muff and HD-2 filter? These things can make a difference (I am on both).

In your first paragraph you basically answer your own question.

HD2,DP cover, port matched exhaust, squish at .022 compression is 182.

 

[foragefarmer]

So 030?

Something like that. I think I remember seeing you post you will go .030 or even .040 with some saws if they like it.