I have a 77' 115 evinrude that I recently purchased. I took it to the lake and after about 5 minutes the temperature buzzer started to sound off. I have a clymer manual for the motor and I assume the impeller needs replacement. I looked over the manual for this procedure and it doesn't look to difficult to do myself. If anyone has any pointers, suggestions, or tips on this procedure such info would be much appreciated.<br /><br />pjw