2016 48 with 1900 miles.

Somehow my throttle got a lot tighter overnight and I'm not sure how. I adjusted the throttle adjustment screw but I can't seem to get it loose like it was from the factory.

I went for a ride, parked it and the next day it was really tight. How the hell did this happen? Has anyone else experience this?

 

I would dig into it and see what's what.
Maybe the little plastic shoe inside that gets tightened/loosened with that thumb screw came off or isn't aligned properly inside.

Open it up and take a peak.

 

Will do sir. Not sure how to do it just yet but I'll figure it out.

 

There is no reason to f**k with that little star screw. It does not adjust the cables, it is not a "hillbilly" cruise control. I guess it's best use is setting a fixed idle speed to check timing. Other than that, it's useless IMO. Each cable has it's own adjuster, buy a service manual, it's real easy to adjust it properly. Good luck.

John

 

What he said.

 

That star-shaped **** IS a hill-billy cruise control! It presses on a black plastic pad inside the throttle housing, which in turn presses against the twistgrip. It's a friction device, which can either lock the twistgrip in a set position, or backed off will add a little friction, to slow the action down.

Take care when you dismantle the switch housing, as not only can that black pad escape, but so also can a small brass spring. There have been a couple of references to them in recent weeks, including my thread here. Go to post #12.

A factory service manual is a great idea, even for a small job like this one. As for the stiff action, that could be down to the cables needing a bit of lubrication, even the twistgrip itself.

 

It's under warranty. Let the dealer figure it out. While you're there order the service manuals.

 

I'll get the dealership involved if it's something major. I should be able to handle this myself. I want to get to know the bike anyway.

Is this the service manual or does anyone have any better recommendations?

https://www.amazon.com/99484-16-Davi...service+manual

 

Right manual - ridiculous price. Should be ~1/2 that price from your HD dealer.

 

Thanks cHarley.