Fast idle

[Eric GSX1400K3]

Download the manual from here, it's all explained there.  You can actuate by hand from the linkages under the throttle bodies. The primary you reach from inside the airbox

[Persizi]

I did everything as expected. I adjusted the STP resistance - 0.8Kohm on fully closed secondary throttle.
On a warm engine with agusted rpm to ~1100, I adjust the resistance of the TP to 1.1Kohm.
Then I tried to set up the fast idle but max voltage that I get is 1.15V with fully open secondary throttle valve. What I do wrong?

[t4underc4t]

having looked at the excellent instructions on voltage and the screw I have tried a few times to get this sorted now. On the second attempt, I wound the adjustment screw out so much that it came loose! this has led me to the following conclusion... (wish I has taken pictures) between the adjustment screw and 'metal plates' of the throttle bodies there is a small spring. It seems the issue is that the small spring over time looses its 'spring rate' and therefore, even if you allow the metal plates to separate by adjusting the screw, the spring no longer lifts the throttle plate with the force it requires. Its going to be quite fiddly to get it in place. However I will see what I can find although it may now be later in the year as I want to get out riding will the weather is starting to improve. 

Looking at the suzuki parts it seems to be item 15 on this microfiche. which is called a Torsion Spring