On Oct 17, 5:01 pm, BoyntonStu wrote:
It ran fine last year with the choke open all the way.

Now, it will buck and shut down with the choke completely open.

Obviously it is running too lean this way.

Any problem running it in the partial choke position?

What is the real fix and is it worth it?

Sounds like a dirty carb (partially gummed up jet). The proper fix is
to rebuild or replace the carb. If you're lucky then perhaps some in-
tank fuel system cleaner will help.

Compensating the lean condition with partial choke could work for the
short term but it will limit power output and, since it's impossible
to get it set just right, it will eventually foul a plug or overheat
something.

Could also be a vacuum leak, but if you say it worked a year ago and
doesn't now, it's probably jelled fuel. Always use fuel stabilizer
when storing an engine.