Yamaha 1999 YZF-R6 Service Manual

1-5
FEATURES
GEN
INFO
Former thermostat
Temperature
Time
New thermostat
Temperature
Time
FEATURES
AIR INTAKE SYSTEM
System diagram
This system is designed to improve the power while riding a motorcycle at a high speed by increasing
the air intake efficiency by means of pressurizing the air filter case
2
where the air is taken in via the air
duct
1
from the air intake port located under the headlight.
The system also delivers air pressure from the air filter case to the carburetor side.
The air pressure is operated to the fuel level in the carburetor to supply the appropriate fuel to increase
the power.
The air chamber
3
is also installed between the air filter case and carburetor for delivery of stabilized
air pressure to the carburetor.
THERMOSTAT
Coolant flow is controlled by the thermostat of
which flow control valve
1
is newly developed
for avoiding quick temperature change.
(Refer to the graphs)
2
Notch groove

Yamaha 1999 YZF-R6 Specifications

General

Bore x Stroke	65.5 mm x 44.5 mm
Compression Ratio	12.4:1
Ignition	Digital TCI
Transmission	6-speed
Final Drive	Chain
Front Suspension	Telescopic fork
Front Brakes	Dual 298 mm discs
Front Tire	120/60-ZR17
Rear Tire	180/55-ZR17
Wheelbase	1, 380 mm (54.3 in)
Seat Height	820 mm (32.3 in)
Engine Type	liquid-cooled, DOHC, inline 4-cylinder
Rear Suspension	Single shock
Rear Brakes	220mm disc
Fuel Capacity	17 l (4.5 US gal)
Dry Weight	169 kg