Impeller direction in reverse?

[2strokesmoke]

If its so important to ensure the impeller is "going" in the right direction when installed, then what happens to it when in reverse? Do the fins bend back and forth with ease when shifting or do they stay the same forward direction and very little water gets pumped when in reverse?

[seahorse5]

The outboard impeller rotates the same way as the water pump in your car does when you move the shift lever on the vehicle into REVERSE.

[99yam40]

If its so important to ensure the impeller is "going" in the right direction when installed, then what happens to it when in reverse? Do the fins bend back and forth with ease when shifting or do they stay the same forward direction and very little water gets pumped when in reverse?

You are kidding right!

Pump is on drive shaft not the prop shaft.
Motor and drive shaft do not turn in a different direction only the prop shaft

[rodbolt17]

in other words, yes it does make a difference.
some inboard pumps dont care.
some inboaed pumps have enough room that the vanes will flip.
your yamaha WONT.
reversed vane orintation will cause OVERHEAT.

[2strokesmoke]

You are kidding right!

Pump is on drive shaft not the prop shaft.
Motor and drive shaft do not turn in a different direction only the prop shaft

No, I wasn't kidding. Thanks

[metal128]

Clock wise rotation in all outboards. It dont matter if its Lefty or righty.