Sticky throttle in forward

[Brent R]

I am the new owner of a 2010 Nautique Team 200 with 5.7 l motor.
It runs well except that the throttle does not operate smoothly when in forward which makes it difficult to adjust speed.
I think the cause is the throttle control and not the throttle cable because 1) the throttle operates smoothly 12 to 8 (forward position) and 12 to 4 (rear position) when the centre indent is engaged 2) the throttle operates smoothly when in reverse and 3) the throttle operates smoothly forward and reverse when the transmission cable is disconnected from the transmission.
Is my assumption correct?
What needs to be done to remove the throttle control? Is the first step to remove the upholstery panel? And if so, what technique works best? Getting a pry tool under the panel or trying to push the fasteners out from the back?
Any advice is appreciated.

[shag]

That should be a drive by wire boat, or meaning no actual solid cable. I wonder if the potentiometer (not sure where it is on that boat) is bad... My 08 230, I believe it is back on top of the motor.

[clausy]

Brent R, I’m having similar issues. Did you ever figure it out?

[jpwhit]

On 200s up until 2015, there is still a throttle and shift cable that goes all the way to the engine and transmission. The DBW pedal position sensor is actually on the top of the motor. That's where the mechanical throttle cable terminates. More than likely the throttle cable and possibly the shift cable need to be replaced. But it can also be the mechanical assembly behind the panel where the throttle lever is mounted. But that's less common.

[Brent R]

Hello clausy,

Yes, I was able to get the throttle working as it should.
Please excuse the following awkward explanation because I am not blessed mechanically.
I first tried to adjust the throttle cable where it attached to the drive by wire throttle position sensor, located on the top of the motor. No matter what I did there ( lengthen or shorten) it didn't make much difference.
I ended up taking out the mechanical throttle assembly. To do that I first removed the handle and then the upholstery panel. I found the panel is held in place with "christmas tree" fasteners, that were mostly re-usable for the re-install. To get the panel off I purchased a panel removal tool from the local auto supply store and leveraged the panel off the side of the boat. I was able to source replacement christmas tree fasteners through Amazon.
When the assembly was out I saw the old grease was quite dry. I next took the assembly to the workbench; cleaned it up and re-greased any portion that looked like it needed fresh grease. It moved more smoothly with the fresh grease.
Following directions, I found online for installing "Morse" style controls, I wound the brass bit onto the cable leaving approximately 1/8 th inch of cable threads showing and hooked it up to the throttle control. Initially, I had no improvement to alleviating the sticky throttle control when in forward.
After that I disconnected the brass bit from the throttle assembly and found it worked smoothly after I wound the brass bit a couple more turns onto the cable.
Sorry, I didn't take any pictures.