Re: force main jet
Since the link above didn't work....
You have your choice of:
.064 7500-10,000
.066 5000-7500'
.068 2500-5000'
.070 up to 2500'
Any Mercury dealer either brick and mortar or online can get you one.
Verify part number to model number and year when ordering, because there were different carbs used during that era.
Welcome to iboats and happy boating to you.