On Sat, 9 Sep 2006 15:14:59 -0700, "Mike Noel"
wrote:

My ignition switch occasionally locks up (with the key inserted) in the off
position when I try to start the engine. At first I thought it might be a
worn key and pulled out my spare figuring it would fix the problem. No such
luck. I have to fiddle with it to get it unstuck. The first time it
happened I sprayed a bit of silicone lubricant into the slot and eventually
it came unstuck, but it has happened several times since then. I think it
is time to replace the switch.

The parts manual indicates 10-357210-1 for my serial number PA-28-180, but
that part has a push function in the start position (for priming?) that my
aircraft doesn't have. The other choice in the manual is 10-357200-1 that,
from the description, sounds like my switch.

Has anyone similarly found that their PA-28-180 uses the non-push ignition
switch instead of the push type called out in the manual? I'm guessing the
'push to prime' feature is for IO engines instead of O type that is stock on
Archers.

The push function is just an interlock put there to confuse people
with older PA28s that have separate starter buttons elsewhere on the
panel. (My dad's '48 Nash was the last car I saw like that, but the
tradition carried on in Pipers and Cessnas well into the '60s.) Just
be sure the no-push switch actually has starter connections and isn't
simply a mag switch.

The '73 PA28-180 "Challenger" has the "push" feature on the combined
mag/starter keyswitch. I don't know what that implies for the '74
Archer.

Don