Honda NSS300 Owner's Manual

80
Troubleshooting
Overheating
The engine is overheating when the
following occurs:
● Coolant temperature gauge needle enter
the H (Hot) range.
● Acceleration becomes sluggish.
If this occurs, pull safely to the side of the
road and perform the following procedure.
Extended fast idling may cause overheating.
1. Stop the engine using the ignition switch,
and then turn the ignition switch to the
ON position.
2. Check that the radiator fan is operating,
and then turn the ignition switch to the
OFF position.
Suspect a fault. Do not start the engine.
Transport your scooter to your dealer.
Allow the engine to cool with the ignition
switch in the OFF position.
3. After the engine has cooled, inspect the
radiator hose and check if there is a leak.
2 P. 71
Do not start the engine. Transport your
scooter to your dealer.
4. Check the coolant level in the reserve
tank, and add coolant as necessary.
2 P. 71
5. If 1–4 check normal, you may continue
riding, but closely monitor the high
coolant temperature indicator.
NOTICE
Continuing to ride with an overheated engine can cause
serious damage to the engine.
If the fan is not operating:
If the fan is operating:
If there is a leak:

Honda NSS300 Specifications

General

Displacement	279cc
Bore x Stroke	72mm x 68.5mm
Compression Ratio	10.5:1
Fuel System	PGM-FI electronic fuel injection
Transmission	Automatic V-Matic belt drive
Rear Brake	Single 240mm disc with single-piston caliper
Front Tire	120/70-14
Rear Tire	140/70-13
Ignition	Full transistorized ignition
Starter	Electric
Engine Type	Liquid-cooled single-cylinder four-stroke
Front Suspension	33mm hydraulic telescopic fork
Rear Suspension	Twin shock
Front Brake	Single 256mm disc with 3-piston caliper
Fuel Capacity	3.3 gallons