Question about throttle bodies (adjustment)

[Dave20046]

Quick question, I've managed to knock upmost, forward most nut on my sv650's throttle bodies out of adjustment. I believe it's the airflow butterfly adjuster? When rotated it opens/closes the top visible butterflies.

Does anyone know how many turns (in or out) this should be set at?

[Dave20046]

desperation bump

[yorkie_chris]

That is STV, not main one. Not sure how to balance those, or even if it matters.

Just take both STV butterflies out :thumleft:

[Dave20046]

so does it matter what adjustment its at? should I just leave the butterflys open by a few mill then?

[Dave20046]

Right I've found an sv thou manual, according to the manual to check STV sync you need to open it fully and measure the voltage but it doesn't mention putting it back :scratch: Can I take it to mean it does this itself?


STP SENSOR ADJUSTMENT
If the STP sensor adjustment is necessary, measure the sensor
voltage and adjust the STP sensor positioning as follows :
•
Insert the needle pointed probes into the back side of the
position sensor lead wire coupler .
•
Disconnect the STVA motor/injector coupler U.
•
Turn the ignition switch ON .
•
To set the ST valve to fully open position, turn the STVA
motor shaft (thing I've fecked about with) OO clockwise by fingers .
•
Measure the position sensor output voltage at fully open position
.
STP sensor output voltage
ST valve is fully opened :
Approx. 4.38 V at input voltage is 5 .0 V
(O Yellow - O Black)
09900-25008 : Multi circuit tester set
09900-25009 : Needle pointed probe set
Tester knob indication : Voltage (-)
• If the STP sensor output voltage is out of specification, loosen
the STP sensor mounting screws and adjust the STP sensor
output voltage to specification .
•
Tighten the STP sensor mounting screws .
09930-11960: Torx wrench
J STP sensor mounting screw : 2 N .m (0 .2 kgf-m, 1 .5 lb-ft)


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