My 1972 MF10 doesn't want to idle right and I've cleaned the carb a number of times with spray cleaner and boiled it with oxyclean. It fires right off with a bit of choke when cold and none when warmed up. It's smooth at 3400 but not so much when idling. Carb is a fairly new Walbro 37 with no play in the throttle shaft.
I'm starting to suspect the ignition system. Since it's SSI is there anything to adjust other than the flywheel pin heights at .250 and .187, and the pin air gap on the tall pin at .006 to .010? I need to regap the plug to .028 the next time I get a chance and clean under the flywheel as well as the bottom of the coil. I also plan to test the coil to see if it's breaking down when hot.
I have a new head gasket and bellville washers on order for the head.
I picked this up a few weeks ago and it had been sitting for a few years. I'm starting to run out of ideas on why it won't idle properly. Any thoughts?
As always, thanks.