According to m Ransley :
It sounds like a starter problem, your droping the front end would jar
the solenoid, same as tapping it with a hammer. And the clicking sounds
like a solenoid.

The click sounds like the solenoid engaging. Yes, it could be the starter,
but it's a good idea to check out the rest of the wiring first. Could also
be the solenoid itself.

Ie: check the starter motor for 12V when the key is engaged.

I acquired a very old Cub Cadet which has some major damage to one of the
main wiring harnesses (point of high friction). Had to spend an afternoon
repairing it. That could cause things like this.

Also, check the solenoid for continuity when engaged. Sometimes the contacts
get so burnt/crudded up that they intermittently make contact (ie: when
jarred) - gradually getting worse.

Had exactly this problem on a Buick Century (car). The starter gradually
became more and more likely to fail-to-turn-over, and whacking the starter
with a hammer handle would usually get it to work.

Had the starter motor pulled, and it turned out that the relay surfaces _inside_
the starter (looked like a small hockey puck) was heavily pitted/carbonized.

A few passes with fine sand paper, and it was good as new.
--
Chris Lewis, Una confibula non set est
It's not just anyone who gets a Starship Cruiser class named after them.