(Golly! Is this really an eight year old thread?)
........I pulled it after it stalled and it was dry, and the anode was light on one side and dark on the other
This is a sure indication that though the carb is set rich, the saw is gradually being starved of fuel.
Some possibilities come to mind.
* A blocked air vent in the fuel tank.The 029 has the tube and screw vent if I am not mistaken. Just a bit of sawdust intrusion into the tube would clog the vent.To check if this is the cause, when the saw reaches the stalling stage open the fuel cap and close it.This will equalize the pressure in the tank.The saw will then run normally for some time.
* A partially clogged impulse hose.This would weaken the impulses to activate the pump diaphragm fully.The result would be that under load the fuel supply will not be able to catch up with the demand.
Its possible to pull out the impulse hose and check for partial blockage by blowing through it.If there is any resistance, clean the hose out or replace it.
* A sticky jet valve. This causes air to leak into the metering chamber so that the fuel level in the chamber drops till the engine stalls. Try replacing the jet valve.
* I had a 029 come to me with a similar stalling problem and this is what I found before I lost my wits.
The saw did have air compensator.But the bit of the air filter that seats into the air compensator was sealed, probably for a carb without the air compensator.This sealed end seats so well into the rubber boot of the air compensator that it forms an airtight seal.This in turn prevents the metering diaphragm from moving downwards to activate the metering lever.This results in the saw becoming leaner and leaner till it dies from fuel starvation.
Try running the saw without the air filter.If it runs better check out the air filter.
Just punching a couple of pin holes in that sealed bit of that filter solved the problem for me.
If any of the above work for you after these eight years, I will be really happy.
Good Luck.
Joe
