Good afternoon,
I have a Troy Bilt TB675EC 4 cycle string trimmer here. The original carburetor was leaking so I replace it along with the recoil pull start mechanism. I am now able to start this machine relatively easily, however, it only seems to run well enough at idle.
Anything above idle and the machine will bog down an die almost instantly.
The spark plug is clean. I have not removed the muffler to check it out for clogs nor have I inspected the fuel filter in the tank.
However, I am thinking that there is a fuel delivery problem. I am not getting any leaks from the fuel lines, however, it doesn't seem like much fuel wants to stay in the primer bulb, which is detached from the carburetor on this model. I have removed the primer bulb from the plastic housing so I can run the machine with the cover off. I do know that the two fuel lines running to the primer are correct, as reversing them would give me NO fuel flow what so ever.
What I see here is that one of the lines from the primer runs in to the fuel tank, but seems to terminate near the top of the fuel tank, generally above the fuel. This line does not run down in to the tank. The other end of the primer runs to the carburetor.
There is a second port on the carburetor with another line that runs to the fuel tank. This fuel line actually descends all of the way to the bottom of the fuel tank and does have the fuel line attached.
Is this setup with fuel lines correct or is something missing here? Are both of the fuel lines in the tank supposed to run in to the fuel? I'm a bit confused here.
I have also not done a compression test nor have I checked or adjusted the valves at this point.
By the way, when running at idle, I sprayed some starting fluid between the engine and the intake. No change in anything so I will assume that there aren't any air leaks between the intake and the carburetor.
Thanks for any help or suggestions in advance!
I have a Troy Bilt TB675EC 4 cycle string trimmer here. The original carburetor was leaking so I replace it along with the recoil pull start mechanism. I am now able to start this machine relatively easily, however, it only seems to run well enough at idle.
Anything above idle and the machine will bog down an die almost instantly.
The spark plug is clean. I have not removed the muffler to check it out for clogs nor have I inspected the fuel filter in the tank.
However, I am thinking that there is a fuel delivery problem. I am not getting any leaks from the fuel lines, however, it doesn't seem like much fuel wants to stay in the primer bulb, which is detached from the carburetor on this model. I have removed the primer bulb from the plastic housing so I can run the machine with the cover off. I do know that the two fuel lines running to the primer are correct, as reversing them would give me NO fuel flow what so ever.
What I see here is that one of the lines from the primer runs in to the fuel tank, but seems to terminate near the top of the fuel tank, generally above the fuel. This line does not run down in to the tank. The other end of the primer runs to the carburetor.
There is a second port on the carburetor with another line that runs to the fuel tank. This fuel line actually descends all of the way to the bottom of the fuel tank and does have the fuel line attached.
Is this setup with fuel lines correct or is something missing here? Are both of the fuel lines in the tank supposed to run in to the fuel? I'm a bit confused here.
I have also not done a compression test nor have I checked or adjusted the valves at this point.
By the way, when running at idle, I sprayed some starting fluid between the engine and the intake. No change in anything so I will assume that there aren't any air leaks between the intake and the carburetor.
Thanks for any help or suggestions in advance!