04-15-2011, 12:39 AM
I would try removing the lower unit and looking for an inclined cam that sits on a shaft projecting out from the lower unit on the forward side of the unit. That cam may have broken. But if by lowering the unit you can then shift your control handle back and forth, you have determined that the fault is in the gearbox or the control rod outside the gearbox. But in my Merc, that cam will rotate 360 degrees, so if you were at full extension going forward, if the adjustments aren't correct, yours might have rotated around to the reverse side of the cam. My cam was plastic originally but the replacement part was metal so if yours is similar, the plastic may have failed and need to be replaced. Mine wasn't expensive, ~$20.
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