Bobcat 773 engine surge

[bvinson9]

I recently purchased a used 1997 bobcat 773. The owner informed me that it would need a fuel shut off solenoid because it wasn't engaging and had to be pushed in by hand to start the machine. I purchased one and installed but the new one is still not engaging. Any ideas on what else it could be? I also noticed during operation of the machine that the engine would surge from time to time and lose power and pick back up again.

Thanks

 

[foton]

I believe that there is two relays that control the solenoid , one pulls the valve open for starting the other holds it open for running. this could if not working properly cause a lean condition that would cause surging.

 

[bvinson9]

I believe that there is two relays that control the solenoid , one pulls the valve open for starting the other holds it open for running. this could if not working properly cause a lean condition that would cause surging.

Thanks