JD LA145 engine not started

[newbie1234]

John Deer LA145(bought 2009), engine not started,
so, I disconnect hose from Carbureta, and add Gas directly into chamber, then engine starts and OK,
and gas comes from fuel pump...
But when I plug the hose into Carb then engine doesn't start....
I would appreciate it if anyone can shed some lights on this problem,
Thanks,

 

[JimsRepair]

It sounds like your electric carburetor solenoid shutoff switch is stuck closed or electricity is not getting to the electric carburetor shutoff switch, or a faulty electric carburetor solenoid shutoff switch and it would need to be replaced.

 

[newbie1234]

It sounds like your electric carburetor solenoid shutoff switch is stuck closed or electricity is not getting to the electric carburetor shutoff switch, or a faulty electric carburetor solenoid shutoff switch and it would need to be replaced.

When I disembled the carb, I saw there are two rotating plates, one brass color is the solenoid shutoff switch? or anything else?
each rotating plates are moving by the small(3~4inch)steel bar attached to them, one each sides of carb,
or what do you mean is the small plastic body and rubber sharp end needle switch?
Please clearify for me, thanks