Suzuki GSX-R750, Service Manual, Page: 223 / 495

4-76 FI SYSTEM AND INTAKE AIR SYSTEM
FUEL INJECTOR INSTALLATION
• Apply thin coat of the engine oil to new injector cushion seals
and O-rings.
• Install the injector by pushing it straight to the throttle body.
Never turn the injector while pushing it. ( 4-68)
FAST IDLE ADJUSTMENT
The fast idle system is a kind of starter system, which opens
throttle valve by the fast idle cam mechanically. The fast idle cam
is turned by the fast idle cable and the cam pushes throttle valve
shaft bracket. The bracket then opens throttle valve a little to in-
crease the engine speed, and at the fully-pulled condition the
engine speed rises to 3 500 rpm when warmed up.
• Connect a tachometer.
• Start up the engine and run it in idle condition for warming up.
• Set the idle speed to 1 200 rpm.
• Turn the fast idle lever (choke lever)
1
fully and check the fast
idle setting rpm. If the engine speed is not in the specified range,
adjust it to 3 500 rpm as explained in the following procedures:
1)Lift and support the fuel tank with its prop stay. ( 4-51)
2)Start up the engine and keep the fast idle lever in fully-pulled
condition.
3)Adjust the fast idle engine speed to 3 500 rpm by turning the
fast idle adjusting screw
2
.
4)After adjusting the fast idle speed, set the idle speed to 1 200
rpm.
Fast idle setting rpm : 3 500 rpm
(When the engine is warmed.)
Engine idle rpm : 1 200 rpm
(When the engine is warmed.)