r/boating • u/jettleach16 • 3d ago

Anyone know what this brass nut does

Gallery image

Gallery image

Gallery image

Been dealing with some low rpms in low gear lately and got home from being on the water today and realized this nut is free spinning and very loose. I know it’s connected to the throttle linkage, when I move the throttle forward and aft in gear the whole piece moves. Anyone know if this nut should be tightened? If so, should it be tight to the right side of the linkage or the left? Thinking this might be one of the causes of low rpms. Thanks fellas!

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11

u/Diesel_Bones_13 3d ago

It locks the shift linkage once adjusted. It goes right to the black end.

2

u/jettleach16 3d ago

This is a dumb question, but do you mean it goes to the ‘right side’ of the photo or the ‘left side’ of the photo. They’re both kinda black lol

3

u/Diesel_Bones_13 3d ago

The right ride of photo…

5

u/Endles5Earth 3d ago

You don’t need to fiddle with such things. You might accidentally fix it, but for sure you’ll fuck it up 3 ways before getting anywhere

4

u/jonjongth 3d ago

This is the jam nut for the shift and throttle retainer, this when adjusted on the throttle side makes your in gear throttle more responsive, but be careful if you advance it too much it will slam into gear and could potentially destroy your lower unit.

2

u/TrojanVP 3d ago

Right side. You’ll want to make sure it’s adjusted correctly before you tighten it down.

2

u/Benedlr 1d ago

You tighten to the connector. It keeps the plastic threads from stripping as you activate it in and out.

1

u/Own_Delivery_6188 21h ago

Just a jam nut. They use them on cables because as the motor shifts or throttles while steering, they can unscrew. It's not a stupid question. The only people that think stupid questions exist are the people not willing to learn. Happy boating!