It's possible that the mower got flooded with the three
primer shots. You can try again without priming and
the throttle fully open - then wait a bit [15 30 min] to
allow the carb to dry out. Try again with all settings at
normal position, but a little less priming.

Ed

Vik wrote:

I have a three year old Toro push mower that started acting up on me
yesterday. I filled it with gas... pushed the primer button 3 times,
just like I've been doing all along, ... but it wouldn't start. I then
leaned it over to its side to check for obstructions around the blade
but found nothing. I set it upright, tried restarting it and this time
it started but for a few seconds only. Leaning it over may have had
something to do with this... I am don't know.

Any help will be appreciated.

Thanks,
Vik