| Get the serial / model number off the motor. If it has a mercury serial
number you can punch it into the Mercury Parts Express website and it will
tell you what year it is. If it is a 1986 it is probably a Chrysler. Nothing wrong with that. Get the model number off the motor and post it in the Force board on the
iBoats forums, and somebody will be able to tell you right away what year it
is. For instance my Force is a model 507F90C 50 7 F 90 C
50HP 1990 Model 'C'
(I don't remember what the 7 and the F are for) Think of a Force Motor in the same class as a generic work motor. If you are really concerned, just make sure it has water pressure, and good
compression on all cylinders. I'ld say anything over 120 and less than 10
lbs total difference between cylinders. My dad runs a pair of Force 150s on his 22ft Bayliner with walk a round
cuddy cabin. That boat leaps out of the water.
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