The risky approach is to use an impact gun as that delivers shocks as it winds, risky because I’ve seen them pull the centre out.
The flywheel with the steel centre, tapered insert can easily get stuck tight to the crankshaft but even when the alloy flywheel centre
is corroded I've still never had one break .
I usually replace all the steel tapered centre flywheels with the alloy ones as they are much easier to remove and this is
what Villiers also did on their engines so the problem must have been well known.
Cheers
Max.
