High Altitude Adjustment - Honda CH250 Elite 1986 Service Manual

fUEL SYSTEM
NOTE
Remove the carburetor (page 4-31.
(1) VEHICLE EMISSI N CONTROL
INFORMATION UPDATE LABEL - -
the drain screw, and install
Attach
a
Vehicle Emission Control Information Label
onto the fuel tank as shown.
Refer to Service Bulletin No. SL 132 for information on obtain·
the label.
• Do not attach the label to any part that can be easily re-
moved from the vehicle.
chart.
Reinstall the float chamber,
the carburetor 4-11 ).
Drain the fuel from the float chamber.
Remove the float chamber.
Reolalce the main with the altitude type main
the screw using the initial shown in the
When the vehicle is to be continuously above 2,000
feet). the carburetor main jet must be replaced with
altitude type as follows to drivabillty and
decrease exhaust emissions.
HIGH ALTITUDE ADJUSTMENT
--~-
• Do not smoke or allow flames or sparks in the work area.
IIIIIIL-.
• Operation at an altitude lower than 1,500 m (5,000 feet) with
the carburetor adjusted for altitudes may cause the scooter
to idle and stall.
- - - - - - - - - - - - - - - - - - - - - - - - - - -
When the vehicle is to be OOlerated continously below 1.500 m
(5,000 feet). remove carburetor and replace the main jet
with standard type.
the screw.
Be sure these procedures are followed.
STANDARD
I
HIGH ALTITUDE
(BELOW 1500 m, (ABOVE 2.000 m.
5.000 ftl 6.500 ftl
I--~-
MAIN JET No. '85: No. 115 '85: No, 112
After '85: No. 112 After '85: No. 110
PILOT SCREW
2 1-3/4
INITIAL OPENING
Idle speed 1500± 100 rpm 1500± 100 rpm
4-13