Wow Max,

That certainly is a heavier one. What is that off?an edger or something without a blade disc. I wonder if it would help much as there is no weight out wide like a blade disc. I have never seen one like that

In my case, not sure about Norm's we are not using an original PT 24 engine
Maybe the real engine has something like that even a heavier flywheel as we have talked about before


I'm sure the kickback is an inertia problem
If you switch off the ignition no kickback so the engine is definitely trying to run backwards. My scenario is that because of the belt etc the engine is hard to get turning properly and it stops on a compression and unfortunately fires as the piston falls back hence the kickback.

More weight under the engine might help even and ordinary blade disc if it would fit without blades. You could then leave the belt looser.

We give ours a hell of a pull trying to get it it to turn properly. The PT starter really locks on to the crankshaft and won't come off easier like a full crank.

Jeff