I have been messing with this little Ted Williams 7.5 motor for a while. It is a bail O matic, with the pumps on the lower unit. I put one new impeller in the bottom cartridge and left the top one out, with no need of the bailer. Looked like it was pumping well in the barrel, but I didn’t rev it hard. I gave it back to the elderly gent. (I am doing this as a favor). He was out 20 minutes and over heated it. Water pumps were gone when he asked me to help him, it didn’t look too discolored at the head. Suggestion was made to pull head gasket. I did, and it was not in wonderful shape. I touched up the head to flatten it out and found a new head gasket. Cleaned all the water passages while it was off tower. There is a allen screw in the top of the head leading to the head water passage at top. Everything re-assempled and off the the test tank. Starts great idles down great. I remove allen screw and water is coming out of head like a small spring. As I slowly start to rev it, the water starts to sputter, at about half throttle, it disappears into the head completely. I would think more water with more rev’s. Water is spurting out mid section at low throttle. When water is lost at allen screw, the head starts to get hot there. Head’s flat,, new head gasket, what am I missing? Thoughts most appreciated.
Randy
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