Hello Jaffa J,
Have you noticed on the governor arm there are 3 holes, your governor spring can be placed in the top hole or the bottom hole, it is normally in the middle. You can raise and lower the rpm by plus or minus 150rpm.
It might be something to try, I have done it in the past and the machine ran better at a lower or higher rpm. The manual tells you.

With the muffler you can tap it all around with a rubber mallet, it may free some carbon up.
There are other methods people use, like heat the muffler, I have never done it.

I have never seen one with points.

With setting up the cable, I normally have the clap loose then I set the throttle to neally full choke. Then I push the cable at the clamp and watch the choke plate close, then tighten the clamp. This ensures the choke is closed when starting.

When starting I always look through the gap between the cowl and the air cleaner and watch the carby for the choke lever to move across.
They wont start without the choke closed.


Happy is he who penetrates the mystery of things.