Thanks to Andy Reynolds for vids.
Investigations into damage and engine noises.
Faulty main bearing replacement
Replacing the main bearings in the crank cases and preparing to refit the crank and cases
Fitting subframe and piston
Refitting the cylinder to the rebuilt crank case
Replacing the flywheel, ignition coil & exhaust
Replacing the oil pump and drive; then the chain brake and clutch
Fitting the clutch, and advice on maintenance & repairs
Refitting the top handle, recoil starter, carb, and throttle linkage
Refitting covers, setting standard carb settings, fuel and oil, priming carb, starting the saw