On Wed, 15 Mar 2017 13:56:11 +0000, "www.GymRatZ.co.uk"
wrote:

On 15/03/2017 12:46, Tim+ wrote:

If it looks like this
http://www.oldlawnmowerclub.co.uk/si...lk%20Punch.pdf
then I would hazard a guess that once you've removed the recoil starter and
pawl sub-assembly you might be able to screw bolts back into the two holes
in the flywheel on either side of the central left hand thread nut (once
you've removed it of course) through a short bar across the end of the
crankshaft. This should "push" the flywheel off the crankshaft.

When I was doing my Agricultural Engineers apprenticeship one of the
first tools I made up was a dual purpose lawnmower flywheel puller.

A simple bit of steel plate with a "puller" hole in the centre into
which a bolt and nut was loosely fitted (the pulling/pushing bolt)
then a set of 3 holes for 3 hole flywheels and 2 holes for the likes of
the flywheel pictured above.

If I remember sometimes you'd need to actually tap a thread into the
flywheel holes if it hadn't been removed previously (obviously the same
thread as the bolts on your tool) (M6 possibly)
Then screw the puller bolts into the flywheel and wind the centre bolt
out gently, not forgetting to gently tap around the edge of the flywheel
to free it off as too much puller-pressure can strip out the threads
you've just tapped into the flywheel.

Easy peasy.
One thing NOT to do is try and lever the flywheel off as the fan vanes
will crack off the back with very little pressure.

Thanks. So far I haven't found anyone who stocks appropriate steel
strip around Spalding. There's probably loads of the stuff lying
around in garages everywhere.

How thick was the steel plate on your apprenticeship course? What dia
for the centre bolt? M12 is about all I can find around here.

MM