1986 merc 90hp

[the420plow]

when i put it in forward and give it some gas it jumps out of gear and jumps around then just revs up any help would be great

 

[captain ahab]

Re: 1989 merc 90hp

Re: 1989 merc 90hp

adjust your shift cable. That should fix the problem. The shift cable is the cable under the throttle cable on the right hand side of the motor.

 

[the420plow]

Re: 1986 merc 90hp

i will try that again mabey i did not ajust it enough thank u

 

[the420plow]

Re: 1986 merc 90hp

i adjusted the shift cable all the way forward still doing the same thing any other ideas would be helpful thank u

 

[the420plow]

Re: 1986 merc 90hp

i ajusted my shift cable so it goes foreward all the way my motor still jumps out of gear when i apply more gas anyone know whats wrong

 

[corm]

Re: 1986 merc 90hp

Hi,

Well it seems that your clutch dog (#56) and maybe your Forward gear (#54)
may be bad. If you adjusted your cable to allow full engaugement and it now grinds without going anywhere I am afraid you will need parts.
http://www.crowleymarine.com/mercury_parts/278/23.cfm
One other thing you may want to check is #70 This spanner nut should be locked in place by the lock ring #69. If someone did not bend the tabs to make it lock it could have backed out a little and created the problem you have. I would drain out a couple of ounces of lowerunit oil and see how much metal is in it. Chunks are bad as are a lot of fillings or chips. It is rather rare for a Merc clutck dog go out. I have seen them split or crack in half but not rounded off like the older OMC dogs would get.

If anyone else has an idea feel free to jump in with a idea.