Help! Troy Built trimmer won't run continously
Trying to fix a Troy Built trimmer TB20CS for a family member.
The trimmer will crank easily and run but soon cuts off like it's out of gas. I can feather the choke back and forth and keep it running indefinitely either idling or high speed, but engine shuts down when I stop jiggling the choke.
What I've done so far:
Drained the tank and refilled with new gas(gas wasn't bad), seems to have good fuel flow, tried running with and without the muffler (no change), cleaned and totally rebuilt the carb (Zama)with new kit, even cleaned behind welsh plug, but it runs exactly the same as before.
Sure could use some words of wisdom cause I'm at my wits end!