Idle Speed Adjustment - Yamaha FZR400 1988-1989 Service Manual

IDLE SPEED ADJUSTMENT AD
*Racing the engine for less than a second,
two or three times, and check the syn-
chronization again.
Vacuum Pressure at Idle Speed:
21.33 f 0.6 kPa
(160 * 5 mmHg, 6.30 f 0.2 inHg)
Vacuum Synchronous Difference:
1.33 kPa (10 mmHg, 0.4 inHg)
I
carburetor No. 4 to carburetor No. 3 by
turning synchronizing screw @ until both
gauges read the same.
*Repeat the same steps to synchronize No.
2 carburetor to No. 3 carburetor by turn-
ing synchronizing screw @ until both
gauges read the same.
8. Adjust:
Idle speed
??
9. Install:
Fuel tank
??

IDLE SPEED ADJUSTMENT

1. Start the engine and let it warm up.
2. Inspect:
Idle speed
??
Out of specification --f Adjust.
Idle Speed: 1,250 - 1,350 r/min
3. Adjust:
Idle speed
??
Turn in
Turn out
J m
Engine speed is increased.
Engine speed is decreased.