carburetor adjustment

I have a husky k770 model, rebuilt the carb, gaskets were like potato chips. When starting, it will only start with the choke, pop off the choke and it will rev to full speed and takes a while for it to slow down when releasing the trigger. it also acts like it wants to be a "runaway" engine...

Hello experts! Brand new to this site. I’m a small engine tech and I’m working on an echo cs 600p. The owner said while operating it that the rpm’s began to race and it wouldn’t shut off. After getting it to stop he restarted it and it would idle but cut out after the throttle was applied. I...

I'm trying to make a cheat sheet or pocket card for the guys at work to use when tuning saws. I'm having trouble tracking down the suggested idle settings for a few models that we own. I know tuning to ear is a better practice, but I need a quantifiable range to use as a baseline for the ones...

I recently was given an old stihl 025 from a friend. When I got it, it had a piston that was in bad shape, and the crank bearings and seals were shot. After replacing the piston, seals, bearings, cylinder, impulse line, and gas line, the saw was able to start, but not idle. I thought maybe it...

So I just replaced the piston and cylinder on my 051AV (early model) and I'm trying to get the carb (Tillosten) tuned. After the replacement, the saw fired right up and idled well, but the first time I pulled the throttle, the carb got stuck open so I pulled the carb off and cleaned it and it's...

So I bought a new 390xp last week, and I've been trying to figure the carb out. I have always tuned in wood, getting it to cut clean and 4 stroking when the load is lifted. I can't seem to get my 390 to 4 stroke though. I set it at the richest the cap would allow and worked my way up to the...

See video please. Is my saw tuned okay? I recently took the limiter caps off my echo cs-600p. Can't tell if this is a lean saw, or a tuned one. Brad

i got a stihl MS 271 that has ran great (~60 hours) for me since buying it used from a dealer. Just days ago in the middle of cutting a ~3' ash on the ground for firewood, the saw bogged and shut down. I'm having a difficult time getting it going again. The carb is hard to identify and remove -...

Hi. Just recently my 1980 056 mag II has started acting up. i just use it for cutting big firewood. Anyways, the chain won't stop spinning, even when idling. I adjusted the idle screw on the carb to get it to slow down, hopefully thinking that would remedy this problem...but the saw just dies...