Yamaha F225A Service Manual page 95

25. Check that there is no clearance a
between the port and starboard throttle
stop screws 4 and 8, and the throttle
body levers 5 and 9. If there is any
clearance, repeat step 24.
26. Start the engine, and when the engine
speed is at idle, check the average vac-
uum difference between the port and
starboard banks. Adjust if out of specifi-
cation.
Average vacuum difference between
port and starboard banks:
40 mmHg (53 mbar, 1.57 inHg)
69J3D11
Throttle control
4-20
1
2
3
4
5
6
7
8
9