Hello,It appears it is a fixed speed throttle.What exactly do you want to do? Lower the engine speed? Is it pulling the mower too fast for you?
It used to pull faster, but now it's like it's just idling and pulling very slowly. I'm trying to increase the speed at which it pulls.
Have you checked the air filter lately? If you tilted the mower over to look under it some gas or oil may have gotten into it.Try removing the air filter and running it to see if the speed picks up.
sorry, but where would the air filter be located
Loosen screw circled and remove cover and filter to test operation.
Thanks that worked.