Hi,

Well it runs now but I'm not 100% sure why.

On Saturday.I:

1. Removed the coil and sand papered the armature prong ends and the magnets on the flywheel. I cannot see why this would make any difference but I did.
2. I reinstalled the coil to 0.25mm clearance using a brass feeler gauge.
3. No opportunity to move the coil any closer to the flywheel as it already is almost touching the upper rim of the flywheel.
4. Tried to start but no go. A bit of a spark but a poor cousin to the Powertorque.
5. Swapped carbies from the Powertorque (which starts easily) to the fullcrank.
6. Tried to start but still no go.Swapped carby back again. Powertorque still starting easily but not the fullcrank.
7. Removed the plug lead and cut half an inch off both ends and reinstalled. Its a bit short now. This is the second time I did this but I cut more off this time.
8. Tried to start and almost immediately got it to fire and then it
burst into life.
9. Stopped it then almost immediately tried to restart. No go but plug seems to be fouling easily.
10. Seemed to be some junk in the cylinder so I removed the head. Not a lot of carbon but what was there was very black, soft and oily. I decoked and cleaned it up and put the head back on.
11. Tried to start and it went almost straight away. And restarted as well. Then I mowed the lawn with it.

So there you, countless hours but you cannot beat mowing with a full crank that runs nicely. The sound, the smell of the oil sure beats the four stroke I have. There is a bit of Rotomo somewhere inside these fullbacks.

I suspect both issues were important, a dirty combustion chamber and the plug lead. Two things for sure, not the coil or the module. I did put the original module back on & it made no difference.

Speedy,
Can you send me a Personal Message re swap? I have a new module that I do not need and I could do with a coil to have in stock in case my soldering job fails.

Anyone have a good source of spark plug wire? The old one is sort of hard and is too short anyway.Whats the best end for the wire that fits inside the plug boot? I have been screwing a small self-tapper into the end of the wire but this may not be the best.

Thanks very much to all who contributed.
All the best
Jeff