I just documented this on a 2001 Windstar in the "Related Question" below - and I suspect the procedure is going to very very close to the same for the Freestar / Monterey.
At the very least, it should be good start to sequencing and what to look for.
there are phillip screws on the cowling, after removing the screws, remove wipers and remove winshield washer hoses on the bottom of the cowling.
The orifice tube is located between the engine and the fire wall. The windshield wiper cowling has to be removed to gain access to the orifice tube.
look under the cowling, my merc. 25 tiller gap is .40
Michael Cowling was born in 1949.
Marlene Cowling was born in 1941.
Chip Cowling is 6' 2".
William C. Cowling was born in 1872.
Richard Cowling Taylor was born in 1789.
Peter 'Mars' Cowling was born in 1946.
Thomas George Cowling died in 1990.
Thomas George Cowling was born in 1906.
Maurice Cowling died on 2005-08-24.