7.5 Mercury Impeller Replacement

[SC1650]

I am trying to check the impeller on an 80 or 81 7.5 Mercury. I just bought the unit from a friend and he stated that the motor did not pump water the last time he started it. He claims he shut if off right away before any damage was done. I know that I have to remove the two nuts to get the lower housing to drop but the Mercury dealer where I live indicated that I would also have to remove the shift linkage before the lower unit would drop and I could get at the impeller. Can someone tell me exactly where I loosen up the shift linkage to allow the lowe unit to drop. Thanks for any help.

Steve

 

[Wingedwheel]

Re: 7.5 Mercury Impeller Replacement

Alot of times if they aren't totally familier with the engine, the dealers will always mention the shift linkage. I'm not sure there is a set-screw or release. I believe its a splined type of connector. After removing the two bolts, the lower unit should come apart.

 

[SC1650]

Re: 7.5 Mercury Impeller Replacement

Thanks for the tip. I'll try to let the lower unit down and see if it is connected anywhere. If I can't remove it I'll have to go a different route, if there is one.

Steve

 

[huntin dawg]

Re: 7.5 Mercury Impeller Replacement

The LU should come right off once you remove the two nuts.

HD