Re: mercury lower shaft (25hp)
You need to purchase a new intermediate casting (leg..dunno what this part would cost), drive shaft for about $300.00 + bucks, water tube and shift linkage. You might try locating one of the outboard junkyards on the web and buy the parts. Best deal I could get you is 20% of list price from Mercury. A very expensive proposition. You might get the parts for about $150.00-$200.00 complete used. Then you need all the gsket kits.