Fast Idle; Fast Idle Adjustment - Suzuki VL800 Service Manual

FAST IDLE

The fast idle system is automatic type.
When the fast idle cam is turned by the secondary throttle valve
actuator, the cam pushes the lever on the throttle valve shaft
causing the throttle valve to open and raise the engine speed.
When the engine has warmed up, depending on the water tem-
perature, ambient temperature and lapsed time, the fast idle is
cancelled allowing the engine to resume idle speed.
Ambient Temp.
–5 °C (23 °F) 1 500 – 2 100 rpm
15 °C (59 °F) 1 500 – 2 100 rpm
25 °C (77 °F) 1 500 – 2 100 rpm

FAST IDLE ADJUSTMENT

• Lift and support the fuel tank. ($14-93)
• Start up the engine and run it in idling condition for warming
up.
• Set the idle rpm to 1 100 rpm by the throttle stop screw 1.
• Check and adjust the TP sensor. ($14-118)
• Start up the engine.
• Measure the TP sensor output voltage at the coupler
(between + Bl/B wire and - B/Br wire).
! TP sensor output voltage at dle position: Approx. 1.12 V
" 09900-25008: Multi-circuit tester set
09900-25009: Needle pointed probe set
& Tester knob indication: Voltage (')
• Turn the ignition switch OFF.
• Disconnect the STVA coupler.
• Turn the ignition switch ON.
• Open the secondary throttle valve fully by moving the fast idle
link with your finger.
• With the secondary throttle valve held at this position, mea-
sure the output voltage of the TP sensor as shown.
Fast idle cancel-
Fast idle rpm
Approx. 100 sec.
Approx. 60 sec.
Approx. 50 sec.
ling time
VL800K5 ('05-MODEL) 14-113
V