Why would prima bulb not pulling up gas - Troy Bilt Tb70ss Gas Trimmer

Question edited, add maker.
Question translated from Croatian.

We do not have that truck here in North America.

https://www.google.com/search?q=Mercedes-Benz+Atego+812+error+2319+9964+4349+2522+2023

Codes List

https://www.google.com/search?q=mercedes-benz+atego+812+error+codes+list

Google Translate

https://translate.google.ca/?sl=auto&tl=en&op=translate

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The images show the bulb cover just unscrews anticlockwise.

https://www.google.com/search?q=prima+lpr+814+change+light+bulb

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Here is the way to hook up the fuel lines
Note: I put it together outside of the saw so you could see how it is hooked up. Fuel filter/pickup >>to>> Inlet on carb >>to>> Outlet of carb >>to>> to inlet on Primer bulb(shorter post) >>to>> Outlet of primer(longer post) >>to>>Fuel tank (usually has a retainer in tank to prevent fuel line from coming out.)

Take it to a shop - as you said, "I don't know anything"

Check it speaker first. If found OK, check and replace damaged component/s at its amplifier section circuit.http://electronicshelponline.blogspot.com/ Pull up previous posts there, either by its left side bar, or view it in Timeslide option.

1091 1061 1157 1103 1231 1274. These are the codes to check with Prima brand TVs. If you wish to get more, check the site linked here. http://electrohelponline.blogspot.com/ Pull up previous posts there, either by its left side bar, or view it in Timslide option.

is there a prima at the front of the air filter if there is push it in 5 times then put throttle flat out ond pullcord,if dosnt have prima put throttle to choke pull cord and when starts pull throttle off choke,if dosnt start after five pulls take off choke and try starting again

The lines can only go on 2 different ways, if the primer bulb is filling them im guessing its the corrrect way. However your friend may have tried adjusting the carb before he gave it to you. I'd be looking at carb settings or a sticking needle.

There should be a pedal on the bottom support that has a red tab. Press down on that with your foot while pulling up on the tabs on the side. This will expand the unit. This is for the Prima Pappa Best model. There are other Prima Pappa models though.