My leaf blower will start with the help of starting fluid but once the fluid runs out it stalls. i am thinking that there is no gas getting to the carborater. how do i get to the fuel line?

How long since the primer bulb was changed?
How long since the spark plug was checked?
Gas left sitting in the carb since last September?

Gas-Powered Leaf Blower Starting Then Stalling? 5 Likely ...

DIY Repair Clinic https://diy.repairclinic.com > gas-powered-leaf-blower...
Oct 12, 2022 - Clogged spark arrestor - Over time, the arrestor's metal mesh can become clogged with soot or other debris, which can cause the engine to stall.

Missing: Mcculloch ‎ GB320

Maintenance - McCulloch GB 320 Operator's Manual

ManualsLib https://www.manualslib.com > ... > Operator's manual
McCulloch GB 320 Manual Online: Maintenance. Disconnect the spark STARTING A WARM ENGINE 1. Move the choke lever to the HALF CHOKE position. 2.

loosen gas cap. Probably a bad Vent in the gas cap

Check that the pinhole vent in the gas cap is clear.

Is it getting gas? Have you tried a spray of Starter Fluid in the Carburetor? to see if it will start on that?
10% Ethanol Gas is a carburetor killer. If the engine hasn't been run in few months, chances are the Ethanol caused problems in the Carb.
Write your congressman and tell then to stop the Bill that has us using this do-nothing Ethanol gas .

Have a look at these tips for starting a blower:

http://www.fixya.com/support/r9884834-leaf_blower_start

hi. get a can of starter fluid and a helper. remove the air filter. have your helper spray a little fluid into the air cleaner and then start it up... keep spraying enough fluid to keep it running for at least two minutes to clean the engine of any crud. Joe

fuel problem clean out carb and jets add fuel system cleaner .if no go use easy start

Sounds to me you might be sucking air into the fuel line that's in the fuel tank...

I'd drain the tank, remove the fuel line and check it for hole...

you do have the lines wrong

have you tried changing the air filter and spark plug?