High Altitude Adjustment - Honda V30 Magna VF500C Manual

FUEL SYSTEM
HIGH AtTITUDE ADJUSTMENT
(USA only)
When the vehicle is to be operated continuously
above 2,000 m (6,500 feet), the carburetor must be
readjusted as follows to improve driveability and
decrease exhaust emissions.
Warm up the engine to operating temperature. Stop
and go driving for 10 minutes is sufficient.
Remove each pilot screw plug (page 4-8).
Turn each pilot screw clockwise 1-1/2 turn.
Adjust the idle speed to 1,300 ± 100 rpm with the
throttle stop screw.
Drive new pilot screw plugs into the pilot screw
bores (page 4-17).
NOTE:
This adjustment must be made at high alti-
tude to ensure proper high altitude operation.
Attach a Vehicle Emission Control Information
Update label onto the frame as shown.
NOTE:
Do not attach the label to any part that can
be easily removed from the vehicle .
....
.
'
Operation at an altitude lower than 1,500 m
(5,000 feet) with the carburetors adjusted for
high altitudes may cause the engine to idle
roughly and stall.
When the vehicle is to be operated continously
below 1,500 m (5,000 feet), turn each pilot screw
counterclockwise 1 turn to its original position
after removing each pilot screw plug and adjust the
idle speed to 1,300 ± 100 rpm. Drive new pilot
screw plugs into the pilot screw bores (page 4-17).
Be sure to do these adjustments at low altitude.
4-18
GJ\aONDA
~V30
MAGNA
VEHICLE EMISSION CONTROL
INFORMATION UPDATE LABEL