And I gave the weight in another post for the non-Enduro at 79lbs. Problem is, outside of Australia and England markets, it is only Enduro for 2-stroke. The Enduro 15hp is 89lbs.
The Tohatsu 9.8 is the 6hp engine with different carb. The Tohatsu 9.9 is the 15hp with a different carb. I see Tohatsu still makes the 9.8.
As I stated, if one needs to remove/carry an engine frequently, one should stay with very small engines. Your 9.8hp is a special and unique case right now - all others in that range are much heavier, and you need to go down significantly in HP to get that weight.
As for our Suzuki weight (97lbs), you can check my statement here: http://www.boats.net/outboard_motor/Suzuki/20HP/S-DF20AS.html
Mark