Robin revs up and down? Please help!

[ThatGuyYouKnow]

Okay tried the seafoam. No changes. The throttle sits naturally in the open position. If i try to hold the throttle all the way open if runs fast and sputters quickly. If i hold it closed the speed drops and it dies. If i wedge the throttle in like half open it runs good but can still feel the surges but its not affecting it. I cleaned the carb again and tried poking a small wire in every hole.

 

[bertsmobile1]

Pinch the tank from you push mower and hang this above the mower so you get a good gravity meal.
Problem goes away the you need to clean out the fuel tank and lines and look at the pump if it has one.
Problem stays then there is still something clogging up the carb or stopping the float bowl filling properly.

 

[ThatGuyYouKnow]

If i spray gas or carb cleaner into the carb from air cleaner the engine sputters and tries to die.

 

[bertsmobile1]

If i spray gas or carb cleaner into the carb from air cleaner the engine sputters and tries to die.

You can be flooding or starving the engine or both by doing that which is why I asked for the alternative tank to be used.
We are trying to eliminate possabilities and narrow down the probles.
We already know you can get it to run badly on starter fluid so we know it has spark and can assume the ignition timing is somewhere near where it should be.
So now we have to work out where in the fuel system the problem lies.
Bit by bit it is a slow & methodical process unles you want to go but a box load of bits and just keep shovonmg them on till the problem is solved or your wallet is empty.

 

[ThatGuyYouKnow]

Okay finally got out there tried new hose with clean tank no filter and still the same thing. Only time it runs good is when the governor isnt moving or moves very little. When i first tried it ran good but then i seen the fuel line was in the way of the governor.

 

[bertsmobile1]

So now you have done what Illingine asked you to day way back on the 27th.
While it was by accident looks like you have isolated it to the govenor itself.

Contry to popular belief, the govenor SLOWS down the engine.
And it is the govenor that is connected to the carb.
The throttle cable puts tension on the govenor via the govenor spring to stop it closing down the throttle.
To prevent hysterious there is a tiny spring on the govenor linkage.

 

[ThatGuyYouKnow]

So my issue is the governor. Ill check and see what adjustments i can do and i might have to take it all back apart and pull the sump cover oh joy.

 

[bertsmobile1]

Before you rip into the engine do as Illingine asked.
Run the engine and manually work the govenor with your finger.
Loosen the govenor arm and reset it on the govenor shaft ( assuming this is a mechanical govenor )
Check the parts books to ensure all the bits are there
If this is on a generator there is generally a throttle adjustment screw these tend to go out of adjustment due to vibrations.

 

[ThatGuyYouKnow]

The book says its a flywheel governor but its nothing like those on the briggs. It has a spring going to a screw adjust speed lever, the spring and rod for the carb, and the governor is held on a small shaft with a clamp and nut combo.

 

[ThatGuyYouKnow]

The book says its a flywheel governor but its nothing like those on the briggs. It has a spring going to a screw adjust speed lever, the spring and rod for the carb, and the governor is held on a small shaft with a clamp and nut combo.

Okay i havent gotten back out there to check it. But i do have a question. Its a centrifugal governor and does anyone know what position its supposed to be in or does it connect to the governor gear on the sump cover?