Liam
Are you talking about the harbor freight predator engines?
If so, then all you gotta do is remove tank, throttle linkage and lever, side engine cover (be careful not to break off the gasket)
Remove the white plastic gear ( it will be a challenge removing the “C” clip retainer) bend the inside part of throttle linkage away from crank shaft, put everything back together, cut carburetor black plastic linkage holder ( you will need to order a new throttle linkage kit and throw away the original one.
Anyhow, hope this helps, I’ll try to post a video, if you can’t get it to work.