I figured out the issue. There was no issue. I just didn't understand how the shift interrupt works. If I turn the prop so the gear is fully engaged the interrupt is where it should be.
I replaced the throttle and upper shift cables with new ones my mechanic ordered for me.
So to your previous post, DIY to save money strikes again :)
The only thing I can think of is that the lower shift cable adjustment barrel is pinned and it's 5 and 15/16ths of an inch, just shy of 6"...
When I shift into forward, shift interrupt stays put, but when I push the throttle it closes the interrupt. Not sure how it should behave when not running / out of water.
I went through the cable adjustment procedure again, and now I have the shift interrupt staying put when I push throttle...
Thanks, I have one of the lower shift cables where the barrel isn't adjustable. It measures about 6 1/4".
What do you suggest if the shifter is sloppy?
The merc manual specifically says to shift into forward gear in wide open throttle position before setting the barrel on the remote control throttle cable.
For anyone that comes across this, my mistake was not putting the drive into forward gear (and reverse), wide open throttle position. When you do that there's about a quarter inch more cable travel.
Yeah there's a second point, I just put the cable where it was before. I'll look into that. The control itself is a Quicksilver but a very old model. The boat's a '91. Pretty sure it's original..
Stern drive manual says the length of travel between forward and reverse should be 3", plus/minus 1/8". Mine travels 2.75". Close, but not quite in spec. I don't know of any way to change the distance of travel.
Reading the manual for the stern drive shift cable adjustment and it has two methods one for right hand rotation drive and one for left. What is the Alpha one gen one?
Can you help me with the internal tension adjustment you mentioned? Where is it and what do I need to do? Installed new cables and it's as stiff as ever, maybe more so.
The carb is from National Carburetor so no, not Chinese :) I wondered about the internal tension adjustment, is that just the nut that secures the cable or something else?
Here's a photo I took for reference:
