exhaust problem revisited

[Bob Benner]

Here's the page to see what I eventually did to fix the problem.

http://bennersfarm.com/BF%20Home/Bluebir...lemma.html

None of the parts were available so I had to follow the guru Rube Goldberg and
concoct a
fix as I'm leaving Wednesday for the north.

On the page at the top is a picture of what I believe is the tach sender. It is
loose, not
being held by anything and is easily slipped out of its hole. Attached at the
bottom of the
unit is a gear that is also loose and easily lifted from the hole.

Do any of you know if this is a Detroit part or aftermarket or where I can find
it. Also are
there any 'do not's', I should know about when I go to change it?

Bob
86PT40
on sticky LI