MAINTENANCE
4-13
ENGINE IDLE SPEED
• Inspect the idle speed after all other engine main-
tenance items have been performed and are
within specifications.
• Before checking the idle speed, inspect following
items.
– No MIL blinking
– Spark plug condition (page 4-8)
– Air cleaner condition (page 4-6)
– Valve clearance (page 4-9)
– Cylinder compression (page 9-6)
• The engine must be warm for accurate idle speed
inspection.
• This system eliminates the need for manual idle
speed adjustment.
Support the scooter with its centerstand.
Warm up the engine about ten minutes.
Connect the tachometer and check the idle speed.
If the idle speed is out of the specification, check the
following:
• Throttle operation and throttle grip freeplay
(page 4-5).
• Intake air leak or engine top-end problem (page
9-5).
• IACV operation (page 6-56).
RADIATOR COOLANT
Support the scooter with its centerstand.
Unlock the seat with ignition key.
Open the seat.
Check the coolant level of the reserve tank with the
engine running at normal operating temperature.
The level should be between the "UPPER" and
"LOWER" level lines with the scooter upright on a
level surface.
If the level is low, fill as follows:
Remove the screw and reserve tank lid.
Remove the reserve tank cap and fill the tank to the
upper level line with the recommended coolant.
Check to see if there are any coolant leaks when the
coolant level decreases very rapidly.
If the reserve tank becomes completely empty,
there is a possibility of air getting into the cooling
system.
Be sure to remove all air from the cooling system
(page 7-8).
ENGINE IDLE SPEED: 1,700 ± 100 min
-1
(rpm)
RECOMMENDED COOLANT:
Honda PRE-MIX COOLANT
RESERVE TANK CAP
SCREW
RESERVE
TANK LID
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