Any small engine guys? Chainsaw issue

Just a H L on mine. Must of not have been tuned right from the factory. As I never have adjusted it. I doubt they can move much on their own but I guess you never know with vibration. I figured drew them in and then work backwards. Looks like it’s going to be a lot of trail and error. Won’t mind if I can just get the damn thing running.

 

Yea sadly with all the different carbs out there, people’s fuel/oil mixture there’s not really a set position for them. I usually do half turns out until it starts eventually and kinda fine tune from there.

This usually works starting with the screws in because then it won’t be flooded at that point. Also wear a glove... blisters come awful fast pulling a pull starter a bunch

 

As soon as you smell gas, or think its flooded, turn everything to the 'off' position and give it around 15-20 vigorous pulls. Clears everything out. Then adjust and attempt it again.

 

This thing is no stranger to vigorous pulls....

Each pull is dumping more fuel in the cylinder though. I usually pull the plug and let it evaporate. Also opening up the throttle seems to help get some airflow in and get the vapors out.


I’m gonna go back in the garage in a bit and try fiddling with it again

 

As has been mentioned, all brands are a little different. But with your lever in the off position no fuel should be entering the system when you pull it... try putting it in the off position and hold the throttle wide open as you pull in order to de-flood.

 

Id also try dumping the gas and see if it try's to light off, eventually it should get to the right fuel mixture to try to start if everything is right.

 

Looks like their is 3 adjustment screws. One for the idle. And a High and low.

Disconnected the carb and when I pull I hear a suction sound. Is that normal? Can’t tell if ya coming from the carb or the cylinder

 

Noise is coming from the carb. Purge bulb is suppose to take the air out. Wondering if a gasket is taking a shit. Guess I’ll open it up and see

 

I just worked up a friend's Craftsman...made by Poulan this one was. The coil was too far from the flywheel so intermittent spark. Loosen off the bolts and space with a piece of cardboard from a book of matches. Turned out right.

Carb kit...if the present diaphram is crunchy, not supple, it needs replacing. Priming bulb pressurizes the fuel tank forcing fuel through the filter and into the carb.

 

Thanks. I couldn’t get it to do anything trying to adjust the carb. So I just ordered a new one for the hell of it since I’m sure I’ll never be able to get it back to factory adjustment. Once that come in I’ll play around with the spark. I did think it was a little weak. However a few times pulling it I noticed it seemed heavier as I started to give it a little stronger tug. Maybe it was a coincidence. I could definitely see it being spark as the plug gets wet. Carb seems to be doing it’s jobs and I just replaced all the lines, purge bulb, fuel filter, and gas cap. There is definitely pressure in the tank.


As I said before I read o something about spark adjustment It was the only thing I could find about it and I didn’t know how it really was working. The article was pretty brief. Didn’t know if it was someone just talking out of their ass or not. Guess that guy knew what he was talking about.


New carb should be here tomorrow or Wednesday. Hopefully I’ll have time to get that in and play with the spark before work.

Thanks! I’ll keep you guys updated

 

check the fuel line where it goes into the tank from the carb. Mine has a small split in it and wouldn't run. There was enough line to pull some up through the tank, cut the split part and hook it back up to the carb.

 

I've also had this happen. Good call @dofartshavelumps

 

What brand carb is it?

 

I' e been told by tree service guys that these cheaper saws (no matter the maker, it's their lesser product) have a life of 10-20 running hours then they just don't have the compression to keep things spinning. Not much flywheel effect here.

A good Stihl or Husky is rated closer to 80 hours. Bores are high wear quality (maybe Nikasealed) and rings are better steel. Not to mention carbs are usually not China junk that fuel cut's it's own pathways through, washing out jets and vents.

 

I've got a Stihl 034WB Wood Boss with way more than 80 hours on it. Bought it back in the early 80's. Only needed a carb rebuild, and wouldn't have needed that had I not put it up with gas in it. I don't work on watches, and I SURE DON'T work on saw carbs. Most likely you should get another carb kit and sit down one evening and read everything on the net about rebuilding the carb, and watch as many YouTube vids on doing it. Some of those little carbs are a headache to rebuild. I'll rebuild the carb on that 2-stroke 125cc shifterkart over there on the left when it needs it, BUT...when it comes to rebuilding one of those little saw carbs, that I leave to the experts. As soon as you get it to run cut something with it and do a high-speed shutdown as soon as it goes through the log: hit the kill switch and IMMEDIATELY take your finger off the throttle. Then pull the plug and read it. A well-tuned carb will produce a cardboard color on the insulator. Tune from the plug, adjusting according to the color of the insulator.

And never buy anything that has a spark plug in it that says Sears on the side.

 

I replaced all the lines, even though the old ones were fine

 

I took the carb apart and clean it. All the gaskets and diaphragm were good. No build up or anything I could see. Saw only was ran maybe 2-3 hours at most.

Only reason I bought the craftsman was because of the price and sales associate told me this saw was made by Husqvarna. Figured it was going to be decent. Apparently not lol

 

Sounds like an issue with the air-fuel ratio. Right now, I think you are running too rich. You need to lean the mixture.

Go back and read snowboard704's post (#20) and follow the carb adjustment procedure that he listed.

 

If that don't work, rebuild the carb. Wet plug indicates way too rich, says carb rebuild to me. If it's the type of carb I think it is then it has little diaphragms in it and it just wont get right until you rebuild the carb. Those carbs are fussy.

Gas, compression spark, and one more thing: an oxidizer.

As for Husky. Go to Lowes and look at the stamped cutting decks and sleeve bearings on a Husky riding mower where welded decks and double row ball bearing flange bearings should be used. Husky will build that saw for Sears as cheap as Sears asks them to, and then have the audacity to still put the Husky name on it. That ain't your Grandpa's Husky.

 

Use the saw as a nice boat anchor, buy an electric one with a cord