361 high-jet setting

[Skooks]

Is it possible to set the H-adjustment on a 361 by ear or is a tach required? I have always adjusted my 066 using the 'blubber' method. I tend to come out a bit on the rich side but the saw worked fine in the cut.

 

[CaseyForrest]

Im going to go ahead and say "no."

When I tached mine it was running 11,200.....

 

[Stihl #1]

The carb on the MS 361 has a bypass jet that feeds approx. 80% of the fuel to the H side of the carb, and then the final tuning is done with the H screw to get the mixture right. It is very hard for me to tune by ear to 13,500, with a fine threaded screw that is only metering a small amount of fuel. A tach is really the only way to do it right. I have always used the STIHL DET tach, the little gray one that works by holding it near the plug, or you can use a wire. I think it has been replaced with a different one that i haven't tried. I did get the one being discussed in the other thread, for about $25, and it works OK, but doesn't refresh very fast, compared to the STIHL one, so it is a little harder to use.
The limiter cap is installed at the factory against the rich side of adjustment, so the only wat it can be turned is leaner, for altitude. If you take the cap off to tune the carb, be sure to it back on so the screws don't vibrate out of adjustment. Be sure to warn the saw up first, and do the WOT adjustment with the bar and chain on it.

 

[fishhuntcutwood]

I use a tach. It's a smooth running saw, and going that high is hard for me to "hear" it. So I tach it.

Jeff

 

[Lakeside53]

The 361 is one of the engines that never really "blubber" unless it is excessively rich. Part of it is the porting - it is Stihl's lowest HC emmision (gms/kwhr) conventional 2 stoke, and by design runs very lean. From about 11k to 14k all you really hear is a change of exhaust tone. If you open up the muffler, it's better, but the tach is the only practical way to set the WOT point.

 

[IchWarriorMkII]

Whats the best way to get into a tach for cheap? Bailey's has a 69 dollar tach, but is there a little cheaper model for the occasional use mine would see?


I'd enjoy renting one, if possible... but no one local has one!

 

[Mr.]

What RPM is recommended Lake?

Fred