Adjusting H screw only for milling/ General tuning questions

[John J.]

Glad you got them out John!

No the manual settings will now be inappropriate since the factory set the adjusters at an initial value (I think is it's 1 turn?) and the limiters provide ~3/4 of variation (I think?) around this range.

I probably the best the thing to do is set the H to about 1+1/2, and the L to about 1+1/4 at first (don't overtighten - the threads are quite fine). Tweak the idle screw to get a highish idle to get things up and and running. I now use the manual's (this is from my ms341) proscribed way to fine tune set up the L and idle screws:

View attachment 546041
A variation of the above will work for a lot of saws. If you don't have a tach then 3,300 is usually just less the than having the chain slowly turned by a slipping clutch. (i.e. increase idle screw till chain catches then back off) and 2800 is a smooth, but lively idle.

I guess the others can help you with the H screw setting.

Hope this helps.....

Thanks for the reply.
I ordered a tach and it should be here tomorrow so I'll tune by ear and rpm shooting for rich on the H side. I'll let you know how it goes.

 

[MattG]

Thanks for the reply.
I ordered a tach and it should be here tomorrow so I'll tune by ear and rpm shooting for rich on the H side. I'll let you know how it goes.

Cool. A tach is always helpful to get a ballpark.

 

[teacherman]

So I was going to mention the drywall screw, which worked fine on a MS460 I had some years back, but Brad got to it first. Thanks again, Brad, for the great idea!

Aparently I have yet to master the art of multi-quoting a post.....