Stihl FS55R trimmer, bulb won't fill.

[Jeff T]

I disassembled the unit to inspect the bulb and fuel lines. Both are fine, not cracked and hold pressure.

When I press the bulb I hear a whistle in the tank, see bubbles, but nothing goes to the bulb.

My next step is going to be compressed air to the carb.

Suggestions?? Thanks!

 

[bertsmobile1]

1) DO NOT PUT COMPRESSES AIR ANYWHERE NEAR A CUBE CARB
If the bulb returns quickly then the fuel line is broken between the filter & the carb and you are just sucking air into the carb then blowing it back