On Mon, 5 Jul 2010 21:52:55 -0700 (PDT), Harry K wrote:

The 'not starting' is almost assuredly a sheared pin.

Hi Harry,
I suspect you are right.
I found the exploded diagrams for the Briggs & Stratton 6.5HP 21" push
mower (Sears catalogue number 917.388853) on http://searspartsdirect.com

http://tinyurl.com/32mzm2n

But the weird thing is I can't find the "flywheel key" anywhere on the
exploded parts diagram.

There's just one big part (#59) called "Engine" which must contain the
sheared flywheel key; but I think I'll have to call Sears in the morning to
find the missing flywheel key.

If anyone looks at that http://searspartsdirect exploded diagram, do YOU
see the flywheel key?