My new(ish) saw

[Big A]

Got this little baby for myself for Xmas!! What I want to know is how to determine her age? Oh and what fuel mix ratio would they run on?

 

[JamesTX]

Port the serial number - I bet Chisel Tooth could helpyou.

 

[GASoline71]

With modern 2-stroke synthetic oils (Stihl Ultra) you can run 50:1 if you want...

40:1 would be good.

Gary

 

[Big A]

Cheers Gary, I did think it would be ok, but just wanted to hear someone else say it!!

 

[Stumper]

James, Sooo.... If Andy ports the serial number will he get higher torque output?


Andy, The oils are better now---you can run anything on 32/1 even the old Macs that specified 10/1.

 

[GASoline71]

I am running Stihl Ultra in all my saws at 50:1... even the old Homelites and McCullochs I have from the 60's. No problems at all...

I saw that too Justin... I never have ported a serial number... I wonder if Ed Heard does that?

Oh yeah... sweet saw Andy!

Gary

 

[Stumper]

Gary, I don't doubt that 50/1 would work okay...but I'm just a little lubrication happy so I stick with 32/1.

 

[Big A]

Port the serial number - I bet Chisel Tooth could helpyou.

I'll take a look tomorrow, or will it need carbon dating??

 

[GASoline71]

Gary, I don't doubt that 50/1 would work okay...but I'm just a little lubrication happy so I stick with 32/1.

True Justin... but there is a thing as too much oil... Especially in the more modern saws and OPE...

Andy... are you gonna restore this monster? Or just play around with it?

Gary

 

[Big A]

I bought her as the powerhead for an Alaskan sawmill, so she'll get a new bar and chain. gonna test run her tomorrow, see how she goes, then Monday going to run her at a Douggie fir butt that I felled earlier in the year. Then, if she's running sweet, buy the mill attachment. I got her mainly for demos at shows, and a bit of hobby planking.

 

[GASoline71]

Awesome Andy... that will be a cool milling saw... Take pics when you rip into that Doug!

Gary

 

[sotc]

wht size/model is it?

 

[Big A]

She is a Stihl 090......137cc I think

 

[Big A]

Awesome Andy... that will be a cool milling saw... Take pics when you rip into that Doug!

Gary

Just gonna cut some biscuits Monday, just to get a feel for her, then after Xmas order up the Alaskan.

 

[Chisel Tooth]

Looks like a 08S introduced in 1965, 56ccm, 7000 RPM. The recommended mix is 20:1 using Castrol 2 stroke SAE 40. But like the guys said with the new oils out there today you shouldn't have any trouble. I have a old Mac 650 that I have ran Stihl oil at 50:1 in for over 12 years with no problems at all. Nice find. Let me know if you need anything for her.
See Ya
Mike

 

[Chisel Tooth]

Sorry Andy I'm wrong, the top cover is different from the 08S, it is a S10, 1968, 56ccm, how ever the early models were 46ccm. Everything is the same as posted before. I don't have one of these, and I'm still looking.
See Ya
Mike

 

[GASoline71]

I don't think that is an S10 Mike... My uncle has an S10 and it don't look nothin' like that saw.

Gary

 

[SkwerI]

The most important thing when determining mix ratios is the level of lubrication. If you're going to mix 1970's era 40wt oil with your gas then you need to mix it at the ratios specified back then for that type of oil. If you're using modern synthetic mix oils then you will get superior lubrication by sticking with the current recommended ratios of 50-1 or even 40-1 for large displacement saws over 100cc.

That answer will still apply regardless of the saw in question.

 

[GASoline71]

Good post Brian!

Gary

 

[pantheraba]

That is a neat looking old saw...looking forward to seeing it in action.

 

[Chisel Tooth]

Again I'm wrong, I did some looking and again the top cover is different. Everything else looks like the 08, 08S, and the S10, except the top cover ain't right. This is the S10.

 

[Big A]

Where would I find the serial no.? cant see it in the usual (modern) places. Inside the air filter cover it says 091 model, but isnt this a cut-off saw?

 

[Big A]

The bar wth it is 404, 27" long, looks tiny on it

 

[Big A]

Cheers Chisel, thats the one!! I know my pics dont do her justice, and she's done a bit of work, but she'll do, hell I'm tired and she's 4 years younger than me!!

 

[Chisel Tooth]

Ok I slowed down and did some looking ,it is a 090.
1968, 137ccm, 13hp@6.500 RPMs. 20:1 as before.