Throttle screw under grip?

[paulbaker1954]

Anyone know the purpose of the large spring loaded adjusting screw underneath the throttle grip?

I can't find any mention of it in any manual

I guess it's to alter the rate of return of the throttle when it's let go. Is there a specific way to set it?

[Bryanj]

Its there to make the twist grip harder to twist, like a cheap cruise control. Was not fitted on later models

[Johnwebley]

its perfect for warming up,set it around 2.000 rpm while you put the jacket and helmet on,

ideal,just loosen it after to ride away !!

[gtmdriver]

Used to be a standard fitment on older British bikes too.

An adjustable friction lock for the throttle.

[mike the bike]

Got one on my BMW, never use it.  I prefer to be in control.

[matthewmosse]

Got one on my k0 500/4, very crude cruise controll. I doubt I'd use if it the bike gets done up and running.

[deltarider]

I have one but never used it. If it was ment as a cruise control (which I doubt), I consider it as outright dangerous.

[paulbaker1954]

Thanks all I am now fully enlightened 😀😀😀

[ka-ja]

Hi all,
          Back in the old (pre-indicator) days, most bikes had a throttle damper of sorts to stop the bike standing on its nose when you stuck your right hand out to signaling to turn right!

[florence]

I don't have, or indeed like indicators.  The trick is to let the throttle off slowly and time things well.  The other skill is making sure you are in the correct gear for a left turn.  For people used to using hand signals only it becomes second nature. 

In the last thirty years I've only ridden a bike with indicators for a few months.  I kept leaving them on by mistake which I think is pretty dangerous when approaching a left turn junction.

[ka-ja]

No indicators on my cafe racer either, not "old school image", and I am definately old school,never mind the bike!