Re: 66 35hp seal kit
Water coming out of the lower unit means a definate leak. That lower unit should be the same for a 35,45 and 55 HP. Post your model number. I am curious. I believe 66 was still considered West Bend or the first year of Chrysler. Number will be something like 35187. Fuel system is probably way overdue for rebuild. Before dumping too much money you want to verify you have good compression (125 or better on both cylinders) and good spark on both plugs. A seal kit may or may not fix the problem with the leak. Older motors develop wear marks where the seals rub and can leak even when pressure tested as good. If it were me before taking it apart I would find a way to pressure test it to see if you can find the leak. If it is just a drain or fill plug or even just a drive shaft seal they are easy to replace without taking anything apart. I used a basketball needle drilled into a screw then sealed with RTV. Pump a little air while the lower unit is under water and look for bubbles. For the rough idle rebuild fuel pump and carb and replace all the fuel lines. Get a manual A clymer is pretty good or go to chrysler crew and buy a downloadable factory manual.