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Yami/Mariner 15hp impeller change

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Downwindtracker 2

New member
How do you disconnect the shift rod for a impeller change ??

I just bought a 1983 Mariner 15M,. Thanks to the help of the guys here, I found out both the year and it's a Yamaha. Excellent . The tell tale does not pee at low idle. And I have no idea of age of the impeller , so it has to be changed . I checked the # of an aftermarket impeller for my Mariner, then the # of Yamaha .It was easy to get the impeller a the local Yamaha dealer.

I have done impellers on old Mercs, but they were painted black.
 
Is the shift shaft and drive shaft connected by a barrel nut? If so, unlock the nuts on both sides of barrel nut then turn barrel nut up until the 2 shafts disengage. If I remember correctly, gear should be in neutral due to the lack of working space if in reverse or forward.
 
As I recall there is more clearance available when the motor is shifted into reverse.

Hold the coupling nut from turning. Barely loosen the jam nut. Turn the coupling nut away from the jam nut until the two rods separate. Remove the lower unit.

Reverse for reassembly. Don't mess with the shift mechanism while the lower unit is removed.

Repeat, don't mess with the shift mechanism while the lower unit is removed.
 
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