chain saw tuning... help

[rancherman]

I was just informed that I have 10 days to clear cut about 45 acres of feral cedar.. I knew this was coming up, and bought a 'herd' of cheapo poulan 3314 saws for 70 bucks a piece. *factory refurbished* they look brand new. Most of these trees will be 6 inch in diameter.. but I'm going to flush em with the ground. I'll be 'in the dirt' quite a bit. (my Stihl won't see the light of day on this project!)So, race out and fire one up.... got it started and it accelerates ok when warmed up... but boggs down and dies at wot. At idle and medium throttle, it appears to be on the verge of too rich (almost 4 strokes)... about where I like to hear them.... but at wot is where it goes south.... bogs down and croaks.So I think to myself, open up the high idle a tad. wrong! no slotted screw... Just a smooth peg sticking out of the carb~ special tool to engage needed! grrr. Will snag the proper 'driver' tomorrow!Of the 3 I bought, I found one that seems to run out ok for today... but any suggestions on the other 2 that have similar problems? I am hoping that sitting in a box for untold months that they suffer from the gummies! I'll try opening up both mixture screws a couple turns, (to dislodge any crud) and start over with the settings

[hex0rz]

I have some experience with tuning and the biggest points I can bring up are:1. Refer to a factory service manaul if they had any included with it and see what it is they tell you for tuning on the adjustments.2. A tachometer to properly tune the RPMS. Without one you may be running it too hot and burn up the jug and piston.

[rancherman]

I have some experience with tuning and the biggest points I can bring up are: 1. Refer to a factory service manaul if they had any included with it and see what it is they tell you for tuning on the adjustments. 2. A tachometer to properly tune the RPMS. Without one you may be running it too hot and burn up the jug and piston.

All I got is the 'owners manual'. shoot, that publication wouldn't make good toilet paper! 14 different languages, and one sentence in 'carb adjustment': "Take saw to qualified serviceman for adjustment". Did some searching on this particular saw, and quite often a plugged gas cap breather is a possible culprit. I have really good compression, good spark. From what I can see on the carb, that lil dude must have a '2 barrel' type body.. I have a suspicion that when wot is rolled on, the 2nd butterfly opens... and that's when things go south. I've never seen a carb quite like that.

[bh115577]

Here's a little info. Almost to the end of the video is where he mentions what could be an issue.