Mariner/Yamaha 5hp lower unit removal

swordfish69

Recruit
Joined
Aug 5, 2012
Messages
2
Hello all,

I've just purchased a 12' auminium run about that has come with an old, aircooled Mariner/Yamaha 5hp outboard.

Serial #: 661S 034376

The engine is in reasonable condition for a 30+ year old motor, good spark, compression etc. Issue is it appears to be stuck in FWD gear and cannot be changed into reverse. I am trying to remove the lower unit (gear box) to investigate further but have run into a spot of trouble. I've removed the bolts holding the LU on (3 ?) and disconnecteed the shifter rod. A small crack has opened up between the LU and main assembly but I cannot seem to remove it any further. Any insight or suggestions would be greatly appreciated. I can post photos up if that would help.

Thanks.
 
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