Hi Blumbly...Good to see I can help a mate out that has helped me..
So, to solve your problem, I would start by putting the spring in the designated place. Looking at the picture below this tab that I have circled, you can bend to the right to increase the rpm's which puts more tension on the governor spring, or bend to the left, to decrease the rpms, which puts less tension on the governor spring. (bend with a flat blade screwdriver or pliers) This is how you adjust the rpm's on this engine. It should hook in here:
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2013/06/full-6805-11411-carby2.jpg)
So when hooked in properly, it should look something like this:
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2013/06/full-6805-11412-step1briggs_375_carburetor_step.jpg)
Be careful not to bend the tab too much, the maximum rpm's for this engine at full throttle is 3200. Set it with a tacho. Remember to have the throttle cable adjusted properly.
Try this first and see how you go. Hope this helps for you.