Hello Jaffa J,
I have been frustrated with setting these up in the past.
I must admit I just haven't been able to get some of them right.
After reading this post, can add a little bit.
1. fuel cap - the piece that is falling into the tank, the plastic they are made from shrinks to the point where it drops into the fuel.
2. there is a small hole that needs to be cleared in the exhaust port, it gets hidden because it is normally blocked with carbon, this seems to make them run better when it is cleared.(you may have done it already?)
3. I have noticed in the past with a lot of them that the governor spring gets stretched, this plays mary hell with getting them set right.
4.I have found that after a really good run the smoke clears and the power increases.
It is a fine balancing act between where the governor arm is on the shaft, the tension in the governor spring and where the mixture screw is set, also how your throttle cable is set.(I know what the manual states about the governor arm, but I have adjusted where it sits on the shaft slightly)
The only down side to these engines is how much you have to take apart each time to make minor adjustment's.
Sorry to cut in on this thread, but just trying help.
From Mark
