craftsman chainsaw adjusting carburetor?

[The Bald Ass Prairie Farm]

craftsman chainsaw 18" 46 cc has three adjusting screws on the left hand
side, marked H-L-T. what would be the right procedure to start adjust
those. At the moment it will run at F1 speed and even faster when you hit
the throttle. Any advice is welcome

Thanks Richard
--
The Bald Ass Prairie Farm
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[Peter Huebner]

In article <EwcPc.12530$yT2.2662@clgrps13>, rosi...@telusplanet.net
says...

> craftsman chainsaw 18" 46 cc has three adjusting screws on the left hand
> side, marked H-L-T. what would be the right procedure to start adjust
> those. At the moment it will run at F1 speed and even faster when you hit
> the throttle. Any advice is welcome
>
> Thanks Richard

Problem is, not all chainsaws/small engines are made equal. So, what I
say may not work for your machine.

You will need a long thin screwdriver, preferably one with a nose
sticking out one side of the handle so you can accurately see how much
you've turned the thing. A felt tip pen mark will do ...

This is the usual procedure: Screw the H jet in until it's seated
(gently!) and then back it off one turn. Screw the L jet in until it's
seated, then back off one turn. If your saw has a whacko carburettor,
this measure of 1 turn may be different, but it's the most common one.

Start saw, warm up. At full throttle, turn H screw in very slowly until
the pitch of the saw turns to screeching, then turn back out until it
gives a rich, slightly throaty sound. When the saw is operating under
load, you should get a rich, throaty and slightly 'singing' noise with a
bit of beat frequency.
Then you tune the low jet so that, when you depress the throttle from
idle, the saw does not stall but goes straight to high revs.
I can't remember which direction you start out with: in or out.

Finally you adjust the idle speed (T) so the saw does not die in idle,
but also does NOT run so fast that the centrifugal clutch will engage
and the chain will jerk or rotate.

You might want to take note of the current settings, so you can go back
to those if the process fails for you.

h.t.h. -Peter

[The Bald Ass Prairie Farm]

Thanks Peter, just what I was looking for, I'm going to try it right away.
I and H are only half a turn, but I'll tweak a bit :)

Thanks Richard

"Peter Huebner" <no....@this.address> wrote in message
news:MPG.1b7861d56...@news.nzl.ihugultra.co.nz...