How heavy is the lower unit on the BF150?

R

Ray

New member
For those of you that do, or have done, your own impeller swap on the Honda BF150 - how heavy is the lower unit? Will I be able to hold it up by myself, or should I plan for some supporting blocks, floor jack, etc.?
 
One person of average strength(for 65 years of age) can handle it and get it up to a workbench. I have two 2x4 pieces bolted to one end of my work shop bench, extending about 12", which are just wide enough to fit each side of the lower unit under the cavitation plate, so that I have waist level support when replacing the impeller. Lift with your legs! About 50-70 pounds.
 
Ray, If you have a WorkMate, they work well for holding the unit. Reinstalling is the problem. Get help for that, go slow and don't force it. :oops: BTDT
 
I just did this. The weight coming out wasn't bad but the unit is awkward. I had to use the trim so the unit would clear the ground. Remove the prop first also. Some of the bolts came out hard. Clean them up with tap and dies before reassembly. Replacing the impellers was pretty basic, use plenty of grease and make sure the impeller vanes are bending in the right direction.

The workmate worked great. Going back in was a two person operation. One person does the insertion while the other person lines up every thing. Having twins makes the job a good 3 to 4 hr job. The parts were purchased from boats.net for $40 per engine. My friend just had his 150 Yamaha done it cost him $370.
 
This may give you a clue: I did it on a 225 Honda while the boat was in the water and I'm no spring chicken, more a 65 year old rooster. I wasn't even standing in the water--I was in my 9 foot Zodiac in my marina slip. I tied the Zodiac to the stern so I wouldn't float away as I pushed and pulled and I tied a rope to the lower unit in case I dropped it. It was heavier than I anticipated and I doubt I'd do it again that way but it would seem to be a dream to do it on dry land.

Pay close attention to how the shaft lines up and the little parts with the impeller. Have some white lithium grease handy to put on the metal parts that were greased.

Go for it.

Steve in Olympia
 
I would be sure and put "never seize" of aluminum/ SS on the bolts/nuts when you put it back together...History of corrosion on some units.
 
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