okay...so i pulled the lower unit to check out the water pump (impeller) on my 1974 evinrude 50 hp motor, and it turns out that the pump inner diameter is bigger than the OD of the drive shaft it is keyed to. Something tells me this is not normal? I talked to the local dealer that I got the...
bought boat with subject motor last year, had to replace water pump. troubleshooting this year, pump does not appear to be pushing water up to cool the engine, even while in neutral. Water level in test drum is high enough for pump to work, but no evidence of water up on the head. Any suggestions?