2015 Mercury 150 hp 4 stroke stuck in forward after lower unit install

[chrisw64]

I recently completed a 300 maintenance on the motor and installed the lower unit it thought correctly. The motor was in neutral when I removed the lower unit. I fired up the motor and its stuck in forward and wont shift. I just took the lower unit off again and everything appeared normal but the same thing happened again when I fired it up.

 

[racerone]

Take lower unit off.-----Put lower unit in neutral.-----Install lower unit with control in neutral.

 

[chrisw64]

Ill give it another shot. I discovered that I missed the hole for the shift linkage at some point. I'm guessing turn the shift linkage until the prop free spins for neutral?

 

[Willor]

Sounds like you need to pull unit off an then Make sure your hand control is in N an make an that the unit is in N. your prop spins free if it don’t then you need to switch it to N with your finger. Now when you install this time before you even put a bolt in just spin prop to make sure it’s still free. Most likely you just bumping it while putting it in.

 

[Marine Services of Las Vegas]

Take lower unit off.-----Put lower unit in neutral.-----Install lower unit with control in neutral.

I prefer putting the L/U in F (the shifter needs to be in F too) that way when the D/S meets the coupler you just give the prop a gentle twist, like a glove. Just make sure no grease is on top of the D/S+Hydrolock=Bad

 

[Marine Services of Las Vegas]

I prefer putting the L/U in F (the shifter needs to be in F too) that way when the D/S meets the coupler you just give the prop a gentle twist, like a glove. Just make sure no grease is on top of the D/S+Hydrolock=Bad

I should clarify, the splines should be greased just don't leave any grease directly on top of the driveshaft.