Honda 240 8hp only runs on full choke - Honda 8 HP Engine

I'd re-clean the carb.

clean carb,then adjust, do not use low end gas,(to many contaminates.use carberator cleaner in gas(read instructions, small tank)

Have your carburator adjusted/calibrated/cleaned by a qualified service personnel.

the motor wont rev high on choke.the motor is suppose to fire once on choke. then turn the choke off.pull the start cord and the motor should start and run.check that the throttle conrol is on full. it should run fine.

I had a problem with a honda generator that would only run on full choke. I removed the carburetor and cleaned the main jet with a wire and carb spray. Problem solved. Fuel stabilizer should be used with todays gas mixtures that have ethanol in them. Hope this helps.

sounds like its time to adjust those valves to me 0.003-0.004 on the filler gage or have done at shop.

Are you laying off the choke at any point? Full choke should only be used when starting a cold engine, it should run with no choke on full throttle. If there is not enough throttle i'd first try adjusting the tiny black screw on the carb beneath your air filter while you have it idling, letting the throttle have a little bit more room. If this doesn't work and you're running it properly than you may need to make some adjustments to the H L settings for your gas/air mix. This is also done while idling mind you and only with a clean air filter.

Not getting enough fuel or you wouldn't need the choke. Need a clean spark plug and take carb apart and clean. Sounds like it has been sitting a long time and gummed up.

Not getting enough gas.. check gas filter.. Rust/Water