Husky 236 idle running problems

[Dionvh]

Hi there,

I recently replaced the cylinder and piston on my Husky 236 and could not get it running right after. It runs well when the choke is out, but as soon as I push in the choke again the engine dies. I tried adjusting the air screw and the idle screw but could not get that right either, it still dies when I push the choke in. Can anybody give me advice on what I could try next?

Also the engine gets quite hot quickly, I assume that's normal after a cylinder and piston renewal and it can only run while the choke is out, but maybe I'm mistaken?

Thanks,

Dion

[dougand3]

Needing choke is not enough fuel delivered or too much external air. Is cylinder sealed well with clamshell? Is intake assy sealed against leak? Does carb need cleaning and rebuild? I assume this is a newer strato/x-torq carb. They need to be really rich. Try 3 turns out on H & L screws.

[Dionvh]

Needing choke is not enough fuel delivered or too much external air. Is cylinder sealed well with clamshell? Is intake assy sealed against leak? Does carb need cleaning and rebuild? I assume this is a newer strato/x-torq carb. They need to be really rich. Try 3 turns out on H & L screws.

Thanks for your answer. What is clamshell? I used liquid gasket material since there is no gasket for the cylinder. How do I make sure the intake assy is sealed against leak? I rebuilt and cleaned the carb, which is a zama (older model). 
Thanks

[dougand3]

Clamshell is the bottom engine pan that 4 bolts connect to cylinder. If you used a good sealant between mating surfaces, it probably is fine. Can spray carb cleaner around intake while engine running and see if saw revs up. 
I'd try a new Aftermarket carb. They cost $15 in USA. Dunno about Spain.

[Dionvh]

Thanks. Compression is okay, I checked it.

So tried to start it again yesterday, but not luck to keep it running.
What I noticed was that I could get it running with the throttle fully open, then it would run for a bit burning all the gas that has been pumped in the cylinders, and then it would die. Almost as if it gets too little air, but I'm not sure about this.

Anyone more ideas?

[dougand3]

Disassemble, clean (under welch plug, too) & new rebuild kit in carb or just get new one.