That is not a Mercury product. It is a Force. Chrysler sold it's OB division
to Force in 1985. It is a Chrysler designed product. It is not the best
engine, but is easy to work on. Parts are getting expensive. Make sure the
compression is good in all cylinders - within a couple PSI of each other at
least. I used to own a 1985 Force. Glad to get rid of it when I did.


"Sam" wrote in message
om...
Hi, I'm looking at a boat to buy with a 1986 MERCURY FORCE 150hp
motor. I've been hearing bad things about Force motors but what year
is the cut off of crap to good? And how can I know if it's really a
1986? Thanks much Sam