1993 Johnson 150 -- grinding in reverse

[BillProctor]

I appreciate all replies. My motor grinds in reverse and is getting worse over time. I am assuming that the gear in the lower unit is bad. I'm debating on trying to do the work my self and would like to know everything that I should replace and what gotcha's are there that I need to be aware of? I have already order and new water pump kit and I'm working on building a list for the gears and bearings.

 

[racerone]

If it is grinding in reverse you need to look into shift rod height adjustment first.

 

[Chris1956]

After you check the shift shaft height, and find it to be adjusted correctly, you might price out a new set of gears, seal kit and then compare that to the brand-new gearcases from Sterndrive Engineering (SEI). You will need to reuse your upper driveshaft, if you have the two piece style.

Remember the replacement of some components requires shimming.

 

[racerone]

Some folks still think shifting slowly and easing these motors into gear is the best thing to do.-----WRONG.

 

[Crosbyman]

OP does not say how he shifts in reverse ...could be a new problem that crept up.

 

[BillProctor]

OP does not say how he shifts in reverse ...could be a new problem that crept up.

I used to slow shift until taught to shift quickly. The boat is used and has been doing this since I bought it but it seems to be getting worse and more annoying, so I want to fix it.

 

[racerone]

Shift rod adjustment will likely correct this issue !

 

[cyclops222]

Adjust shift linkage FIRST.

 

[Faztbullet]

Check the upper motor mounts as if they come loose (and they do!) it will bend shift rod making it to short