1976 merc 1500

jetwhine

Seaman
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Joined
Oct 10, 2007
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64
I got this boat and did put it in the water only because it needed water pump work that I found when running on the muffs. So I replaced the impeller and all is well with the water issue. Now I dont know if this problem that I am having now was caused by the impeller replacement or not. I took the boat out today for a shake down cruise. But right away no reverse. The prop appears to be spinning but will not power the boat backwards when power is added. I also noticed the when comming back from fwd thrust to neutral, when in the neutral it sound like it is not totally disengaged. When I pull the throttle back slightly past neutral the noise stops. When at the reverse detent prop spins in reverse but as power is added it makes a slight grinding noise like it is not engaged all the way and will not move the boat faster when adding power.
So now the question: Is this a cable rig issue or do I need to pull the lower unit back off? Is there any quick visuals that can be checked before I tear into the throttle rig or lower unit?
 

tashasdaddy

Honorary Moderator Emeritus
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Nov 11, 2005
Messages
51,019
Re: 1976 merc 1500

shift shaft not lined up correctly. drop lower, put both control and lower unit in neutral, reinstall.
 

jetwhine

Seaman
Thread starter
Joined
Oct 10, 2007
Messages
64
Re: 1976 merc 1500

I did this job before I received my merc shop manual. At least now I have something to follow and be able to look at the cartoons. I guess thats what I get for not using the manual. Is there a chance that I messed up the shift shaft???
Thanks for the help.
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: 1976 merc 1500

common mistake. the shift shaft gets turn during work.
 

jetwhine

Seaman
Thread starter
Joined
Oct 10, 2007
Messages
64
Re: 1976 merc 1500

Tashasdaddy

Thank you for your imput. I will pull it apart and do it right this time.
 
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