Gotcha yea! i'm more worried about witch way the spring goes in lol..i'll try putting it underneath and see if it that works..and yea i tryed finding an adjustments and nothing!
Yes, I had that same engine.
No carb adjustments, only idle adjustment.
With an expansion pipe, it ran lean and crispy.
Regarding your cable connection.
The most important thing you need to do is to immobilize the cable sheath,
where the stranded cable exits.
That's probably at that large bracket on the right side of the picture.
Using common sense and the laws of physics,
if the spring attaches to the lever ABOVE the lever's pivot point,
the spring WILL need to be connected to the lever
and a stationary position on the LEFT side of the picture.
HOWEVER, , if the lever pivots in its center, and the spring attaches to the lever BELOW the lever's pivot point, the spring WILL need to be connected on the RIGHT side of the picture.
The cable pulls the lever; the spring tries to return the lever to its original position.
The other attachment to the spring is on the control lever
near the friction roller.
Hope this helps; it's just a logical guess.