Suzuki VL1500K5 Supplementary Service Manual page 115

114 VL1500K5 ('05-MODEL)
THROTTLE VALVE SYNCHRONIZATION
Check and adjust the throttle valve synchronization among two
cylinders.
USE OF DIGITAL VACUUM TESTER
Step 1
• Remove the seats. (!Page 121)
• Remove the speedometer and fuel inlet cover, frame head
covers and upper frame covers.
(!VL1500 Service Manual 6-3)
• Start up the engine and run it in idling condition for warming up.
• Stop the warmed-up engine.
• Disconnect the IAP sensor couplers 1.
• Disconnect the IAP sensor vacuum hoses 2 from each throt-
tle body.
• Connect the vacuum tester hoses 3 to each vacuum nipple
on the throttle body.
Step 2
• Connect a tachometer and start up the engine.
• Bring the engine rpm to 1 000 r/min by the throttle stop screw
4.
• Check the vacuum of the two cylinders. If the adjustment is
necessary, proceed to the next step.