Re: Honda Bf9.9 1995 Vintage
Yes, you need to remove the lower unit. There are 4 bolts, probably 12mm if I remember correctly, seperate the shift rod by putting the unit in reverses and look about 1/2 down leg in the open part and you will see the shift rod, there is a small jam nut loosen it slightly and a longer nut, screw it down until it seperates the shifty rod. If you can not do that then have to take out the carter key and clevis pin at the top under the cowling.
If you are steaming from the indicater water, yes, I would say you need a new impeller and or water pump.