The throttle adjuster is not right

[kale bb]

I put a carb on my Troy-bilt 2550 PSI 2.3 GPM 675 Pressure Washer 190cc 6.75hp and the valve flap will open when i push the lever over but it will not eject back and close. I don't know if its the carb that's the problem or if did something wrong. pictures below, tried to make a video with pitctures

 

[atikovi]

Probably have more answers posting in https://bobistheoilguy.com/forums/forums/lawn-mower-and-small-engine.14/

 

[mk378]

This is a governor system. Unlike the gas pedal in a car, the speed control only indirectly controls the throttle plate. With the engine stopped, the carb plate will stay wide open at almost any setting of the control lever. The lever varies the tension on the spring, which sets how fast the engine has to be turning to move the throttle plate closed.

There is a mechanical system inside the crankcase that generates a force on the rod connected to the throttle plate proportional to rpm. This force is trying to close the throttle while the spring is trying to open it. When the two forces match, the engine stabilizes at a governed rpm. If you move the lever to a higher setting, the force from the spring increases, which requires an increase in rpm to match it. The engine then stabilizes at the new rpm.

When the engine stops, the rpm-driven force on the rod is zero, so the throttle tends to flop open.

Have you actually run the machine yet?

 

[Rand]

pictures not viewable.. probably because they are hosted on another forum.

 

[kale bb]

This is a governor system. Unlike the gas pedal in a car, the speed control only indirectly controls the throttle plate. With the engine stopped, the carb plate will stay wide open at almost any setting of the control lever. The lever varies the tension on the spring, which sets how fast the engine has to be turning to move the throttle plate closed.

There is a mechanical system inside the crankcase that generates a force on the rod connected to the throttle plate proportional to rpm. This force is trying to close the throttle while the spring is trying to open it. When the two forces match, the engine stabilizes at a governed rpm. If you move the lever to a higher setting, the force from the spring increases, which requires an increase in rpm to match it. The engine then stabilizes at the new rpm.

When the engine stops, the rpm-driven force on the rod is zero, so the throttle tends to flop open.

Have you actually run the machine yet?

no i have not. i just put a new carb on it and i dont want to put everthing back together and have to take everything apart to fix it again. I will do anything if you give me the advice because im not sure what to do.

 

[mk378]

It looks normal and ready to go to me, except as Rand said I can't enlarge the pictures.