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Hi everybody, I have a question about my motor. I have a 1988 150hp blackmax and when I took off the other day, just before I reached plane, the motor revved like I was in neutral and I lost all power to the prop. Then it just felt like it wouldn't go in gear after that and just revved when I tried. I took the lower unit off and when I spin the drive shaft with it in gear it doesn't drive the prop. The prop spins a little but you can stop it by hand. I don't think I hit anything in the river because I was in 20 ft of water and I didn't see or hear anything. Does anyone have a suggestion as to what went wrong? I am hoping that there is a simple common part that broke. I can't believe this happens right before the fall frenzy. This is my favorite time to fish. I would love some advice before I spend any money.

Thanks, Marcus
 

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Not real sure, but try this website,
www.pfs-ware.com/kwast/mercboard/index.htm

They deal with primarly vintage mercs, but someone may be able to help you out. They have helped me tons on my old 500 merc.
 

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Not familiar with Blackmax, but you may want to pull the prop off and check the splines on it and on the driveshaft. They could be worn. Other than that, I do not know of any other parts that could cause your problem. I can ask a friend of mine who is very knowledgeable on boats to see if he has an idea. Also, try asking someone at a boat store. Good luck
 
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