Where the shift linkage attaches to the gearbox
is at the fluid divert valve / shift valve. It is easy to remove and inspect for wear or damage. All this gearbox
does is divert hydraulic fluid (trans fluid) under pressure to the forward or reverse clutches causing them to engage. Very simple really. It sounds like fluid is being sent to both sets of clutches at the same time causing the gear
to bind up the pump as the fluid has no where to go and stall the motor
. Check or replace the valve before opting for some expensive repair. They are fairly cheap
, and easy to inspect / change out. Make sure you have the numbers off of the gear
that is installed on your boat when ordering parts to insure you get the right one. Dont just order for a paragon gear box.