View Full Version : 1976 merc 75 7.5hp

July 16th, 2011, 08:46 PM
I just aquired a merc 75 motor (1976) I was told it might need a new impeller. Started it up in a barrel with throttle in the start position, about 15 seconds later a good stream was coming out the p hole, when I lowered the RPM's in the shift position the stream started to sputter and the stop until the RPM's were up again. My question, is this normal or is it time for a new impeller? Thanks.

July 17th, 2011, 10:43 PM
I would change it. I had one that did something similar. The impeller was hard and not flexible anymore.