Stihl saws MAX RPM

[Trigger-Time]

I have a tach borrowed for a few days and want to set
the rpm on my saw's. It's not that I want to set them
right on the max rpm, probable 500 to 750 below max
just to be safe. I have done a search, this is the max rpms
that I have found, are these correct rpm numbers with
bar & chains, clean air filters?

MS200T 15000 rpm
026 14000 "
MS361 14000 "
MS460 13500 "
MS660 13000 "

Thanks, Gary

 

[Lakeside53]

The 200T is 14,500, with bar and chain.

 

[Trigger-Time]

Lake, so are the rest of the numbers correct ?

Thanks, Gary

 

[Lakeside53]

I didn't look them up, but they look close.. I thought the 660 was 13,500 though...

BTW, Stihl OPERATING numbers are +/- 1000 rpm, so using the published numbers allows for variation in weather etc.

 

[Trigger-Time]

Lake, Thanks for the info.

I read in one of your post that it was hard to set the
361 by ear, you were right! Checked mine with the tach
I had it set at about 11750 rpm. It seems that out of
my saw's with the limit screw caps the 361 can be set
richer than any of them. Is this the norm for the 361?

And I just want to say thank you again, and too a few
others like you for taking time, for us rookies!

My hat is off to you, Gary

 

[Lakeside53]

Since January 1st Stihl has been setting the saws up with 89 octance E10. If you are using non-alcohol fuel, your saws would run richer at the stop.

 

[Trigger-Time]

Since January 1st Stihl has been setting the saws up with 89 octance E10. If you are using non-alcohol fuel, your saws would run richer at the stop.

I have been using the E10 in all of my saw's, until today
bought some 91 octane. checked two of the saws rpm
with the E10 89 octane, poured it out, then checked the
rpm after a bit, about 150 rpm drop with the 91 octane
W/O the E10.

Gary

 

[Lakeside53]

The lastest charts for the 660 are different from the service manual - they show 13k, so choose your poison.

 

[Lakeside53]

I have been using the E10 in all of my saw's, until today
bought some 91 octane. checked two of the saws rpm
with the E10 89 octane, poured it out, then checked the
rpm after a bit, about 150 rpm drop with the 91 octane
W/O the E10.

Gary

I've seen 500-850 just with the change of fuel.. but it was Arco..

 

[Kneejerk Bombas]

If you set up a log, do some timed cuts, adjust the high speed, time some more cuts, and repeat, you'll find maximum wide open throttle RPM is not optimal. Rather, a bit under that. The exact optimal RPM is dependant on the particular saw and your cutting style.

 

[Trigger-Time]

Lake, the reason I'm trying a non E10 fuel is last
night when I got home, I used the tach and I would
get what I would call lean pockets, after about 1.5 to 2
seconds or so of WOT, you cold here it and the tach
would show it too. the 460 was set at 13000 rpm but
some of the time it would peg out the tach @ 15000 rpm
I don't know if it would have backed down or not because
I let off as soon as it would lean out. I tired it again this
morning, same thing and with other saws also, same thing!
Picked up the 91 octane W/O E10, and tired it I didn't
have any lean out pockets with it. Dose this sound fishy to you
or was I doing something wrong?

 

[DOLMARatOs]

If you really want to show your buddies something run Race fuel in your saw. I've got 114 octane fuel with low lead. I run Opti-2 @70:1 in our Dolmar 5100S Demo saw. Saw absolutely screams through a log even with semi-chisel chain (stays sharp a lot longer). It isn't cheating though, the only reason I run the fuel is that it has an ultra long shelf life and always starts easy. I've heard that a lot of OEMs for mowers, etc. use "Race fuel" to test-run thir engines before shipping. Not sure if this is true.

PS I like the smell of race fuel and Opti.

 

[Lakeside53]

Lake, the reason I'm trying a non E10 fuel is last
night when I got home, I used the tach and I would
get what I would call lean pockets, after about 1.5 to 2
seconds or so of WOT, you cold here it and the tach
would show it too. the 460 was set at 13000 rpm but
some of the time it would peg out the tach @ 15000 rpm
I don't know if it would have backed down or not because
I let off as soon as it would lean out. I tired it again this
morning, same thing and with other saws also, same thing!
Picked up the 91 octane W/O E10, and tired it I didn't
have any lean out pockets with it. Dose this sound fishy to you
or was I doing something wrong?

Sounds fishy.. Are you sure your old fuel wasn't bad? How about your carb inlet screen and fuel filter...? Stiff meeting diaphragm? Keep an eye on it...

 

[Trigger-Time]

If you set up a log, do some timed cuts, adjust the high speed, time some more cuts, and repeat, you'll find maximum wide open throttle RPM is not optimal. Rather, a bit under that. The exact optimal RPM is dependant on the particular saw and your cutting style.

Thanks, Mike
But I'm just playing and getting exercise, not really worried about
the very max cutting speed out of my saw's, but don't want to run
them lean or way overly rich on fuel ether. If I need more power I will bump
up a saw size, if my 066 or 660 won't do it I don't need to be cutting
it.

Thanks again, Gary

P.S This was'nt meant as a smart a$$ reply.

 

[Trigger-Time]

Sounds fishy.. Are you sure your old fuel wasn't bad? How about your carb inlet screen and fuel filter...? Stiff meeting diaphragm? Keep an eye on it...

Lake, All of these saws are less than 2 months old, MS460, MS200T
MS361 and MS660. The 066 and 026 are older. The fuel is fresh, I have
used about 15 gallons in the last 3 months.

Gary

It should have read (these saws are less than 3 months old)
Time is going by way to fast! And I CAN'T REMEMBER S%$!

Gary

 

[Lakeside53]

It's still fishy. If you have a carb that still pops from 13 to 15k, then I'd be taking back to the dealer while it's still under warranty. It should not do that... However, if you can't make it happen again with your new gas, the E10 you were using sounds like your problem... I'd be using that as fire starter.

 

[Monkeyhanger]

MS460 13500 "


Thanks, Gary

Hi,

my original German handbook states max. 14000rpm for the 460 (made in 2001)! So setting it to 13500 would be ok I guess.

Bye

 

[Trigger-Time]

It's still fishy. If you have a carb that still pops from 13 to 15k, then I'd be taking back to the dealer while it's still under warranty. It should not do that... However, if you can't make it happen again with your new gas, the E10 you were using sounds like your problem... I'd be using that as fire starter.

Lake, I think it was the gas also, more than one saw would jump
in rpm, now with the new gas they all hold a very steady rpm.
Pulled the muffler cover off the 460, from that side it looks very
good.

Maybe the last batch of E10 I got had to much corn squeeze'ens in it.

Thanks, Gary

 

[Canyon Angler]

If you really want to show your buddies something run Race fuel in your saw. I've got 114 octane fuel with low lead.

Where do you get this gas? Are you talking about AVGAS like they use in airplanes?

 

[DOLMARatOs]

We have 2 race tracks near my house. I also have a gas station that sells Turbo Blue race fuel. I have also used AVgas and mail-order racing fuel out of the blue drum.