Can't find serial number

[timbermutt]

I just bought a pontoon with a Force 2cycle 40 hp. I am having trouble finding out what year the motor is, the serial number tag is long gone. I can't find a stamp on the block other than the power head number which leads to 1992-1994.
Thanks for any help, Timber

 

[jerryjerry05]

From what I can find the 40 was made in 92 only.
Then picked up again 95-99

 

[timbermutt]

Thanks, man this was driving me nuts!