High Altitude Adjustment {After ' 05 Mod - Honda 2003 NPS50 Ruckus Service Manual

FUEL SYSTEM
H I G H ALTITUDE ADJ USTMENT
(After '05 model)
When the vehicle is to be operated continuously
This adjustment
above 2,000 m (6,500 feet), the carburetor must be
must be made at
readjusted
high altitude to
driveability and decrease exhaust emissions.
ensure proper high
altitude operation.
Replace the standard main jet with the high altitude
type.
HIGH ALTITUDE MAIN JET: #72
Warm up the engine to operating temperature. Ride
the scooter for approximately 1 0 minutes.
TOOL:
Pilot screw wrench
HIGH AL TITUDE PILOT SCREW OPENING:
1/4 tum in from the factory preset position
Adjust the idle speed with the throttle stop screw.
IDLE SPEED: 2,000 ± 100 rpm
Do not attach the Attach the Vehicle Emission Control Information
label to any part Update Label on the left side of the rear frame as
that can be easily shown.
removed from the See Service Letter No. 1 32 for information on
vehicle. obtaining the label.
NOTICE
Sustained operation at an altitude lower than 1,500
m (5, 000 f eet) with the carburetor adjusted for high
altitude settings may cause the engine to idle
roughly and stall in traffic. It may also cause engine
damage due to overheating.
6-20
as described below to
07KMA-MS60101 or
07MMA-MT3010B or
07MMA-MT3010A
(U.S.A. only)
i mprove
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MAIN JET
U PDATE LABEL