Throttle Valve Synchronization - Suzuki GSF650A Service Manual

1D-16 Engine Mechanical:
Inspection
Check following items for any defects or clogging.
Replace the throttle body if necessary.
• O-ring
• Throttle valve
• Secondary throttle valve
• Vacuum hose
ISC Valve Visual Inspection
Visually inspect the ISC valve if necessary.

Throttle Valve Synchronization

Use of SDS Tool
Check and adjust the throttle valve synchronization
among four cylinders.
1) Lift and support the fuel tank. Refer to "Fuel Pump
Assembly / Fuel Level Gauge Removal and
Installation in Section 1G (Page 1G-11)".
2) Disconnect the IAP sensor (#1) vacuum hoses (1)
from the throttle body.
3) Connect the respective vacuum tester hoses to each
vacuum nipple on the throttle body.
I717H1140030-01
B817H21406013
1
1
I717H1140031-01
I717H1140033-01