Frequently when a cone
clutch saildrive exhibits shift problems, the problem occurs in either forward or reverse, but not both. This is because the
clutch cone and it's engaging cup get polished and the cone can't cut thru the
oil film and engage the gear. Seeing that you can't get either forward or reverse gear to engage points in the direction of the shift mechanism on the side of the upper housing. The shifter, which is moved by the shift cable, carries the shift shoe and moves the shoe up or down when the shifter is rotated by the cable. The shift shoe raises or lowers the cone clutch and brings the cone into engagement with the upper or lower gear cup. If something has happened with the shift shoe, like it has sheared off, then you would loose all shifting. This can be examined by removing the shift cable and the four bolts holding the shift mechanism on the side of the housing, and pulling the shift housing off the side of the gear case. You can do this without hauling the
boat.
Another thing that could cause loss of both forward and reverse gears could be the
transmission of
power from the engine into the saildrive. I don't know what
Beta Marine used when they adapted to the 110s saildrive, but if there is a damper plate in the flywheel housing, and the damper plate failed, then no
power would be reaching the saildrive and it would seem that the saildrive isn't shifting.
Something else to consider is the propeller. If the prop fell off of the propshaft, then it might seem that the saildrive gears aren't working, but really there is no prop to transmit power to the
water. Or, perhaps the rubber hub in the prop has torn or slipped and power isn't getting from the prop shaft to the prop blades....
Plenty to think about.
DougR