Yamaha Fz6 N Service Manual

FEATURES
1-2
EAS20170
FEATURES
EAS4S81003
OUTLINE OF FI SYSTEM
The main function of a fuel supply system is to provide fuel to the combustion chamber at the opti-
mum air-fuel ratio in accordance with the engine  operating conditions and the atmospheric tempera-
ture.
In the conventional carburetor system, the air-fuel ratio of the mixture that is supplied to the combus-
tion chamber is created by the volume of the intake air and the fuel that is metered by the jet used in 
the respective carburetor....

FEATURES
1-3
EAS4S81004
FI SYSTEM
The fuel pump delivers fuel to the injector via the fuel filter. The pressure regulator maintains the fuel 
pressure that is applied to the injector at only 250 kPa (2.5 kg/cm
2). Accordingly, when the energiz-
ing signal from the ECU energizes the injector, th e fuel passage opens, causing the fuel to be 
injected into the intake manifold only during the time the passage remains open. Therefore, the 
longer the length of time the injector is energized (injection...

FEATURES
1-4
EAS4S81005
INSTRUMENT FUNCTIONS
Multi-function meter unit
WARNING
EWA4S81002
Be sure to stop the vehicle before making 
any setting changes to the multi-function 
meter unit.
The multi-function meter unit is equipped with 
the following:
 a speedometer (which shows the riding speed)  a tachometer (which shows engine speed)
 an odometer (which shows the total distance 
traveled)
 two tripmeters (which show the distance trav- eled since they were last set to zero)
 a fuel reserve...

FEATURES
1-5
The electric tachometer allows the rider to 
monitor the engine speed and keep it within 
the ideal power range.
When the key is turned to “ON”, the tachome-
ter needle will sweep once across the r/min 
range and then return to zero r/min in order to 
test the electrical circuit.
CAUTION:
ECA4S81004
Do not operate the engine in the tachome-
ter red zone.
Red zone: 14000 r/min and above
Clock mode
The clock is displayed when the key is turned 
to “ON”. In addition, the clock can be displayed...

FEATURES
1-6
Odometer and tripmeter modes (FZ6-NHG(W)/
FZ6-NAHG/FZ6-SHG(W)/FZ6-SAHG)
Push the “SELECT” button to switch the dis-
play between the odometer mode “ODO” and 
the tripmeter modes “TRIP A” and “TRIP B” in 
the following order:
“TRIP A” → “TRIP B”  → “ODO”  → “TRIP A”
When the fuel amount in the fuel tank 
decreases to 3.4 L (0.90 US gal) (0.75 
Imp.gal), the left segment of the fuel meter will 
start flashing, and the odometer display will 
automatically change to the fuel reserve trip-
meter...

FEATURES
1-7
Coolant temperature mode (FZ6-NHG(W)/FZ6-
NAHG/FZ6-SHG(W)/FZ6-SAHG)
The coolant temperature display indicates the 
temperature of the coolant.
Push the “RESET” button to switch the coolant 
temperature display to the air intake tempera-
ture display.
NOTE:
When the coolant temperature display is 
selected, “C” is displayed for one second, and 
then the coolant temperature is displayed.
CAUTION:
ECA4S81009
Do not operate the engine if it is over-
heated.
Air intake temperature mode
The air...

FEATURES
1-8
If any of the immobilizer system circuits are 
defective, the immobilizer system indicator 
light will flash, and then the display will indicate 
a two-digit error code (e.g., 51, 52, 53).
NOTE:
If the display indicates error code 52, this could 
be caused by transponder interference. If this 
error code appears, try the following.
1 Use the code re-registering key to start the 
engine.
NOTE:
Make sure there are no other immobilizer keys 
close to the main switch, and do not keep more 
than...

FEATURES
1-9
EAS4S81007
OUTLINE OF THE ABS
1 The Yamaha ABS (anti-lock brake system) features a dual electronic control system, which acts on 
the front and rear brakes independently.
2 The ABS features a compact and lightweight design  to help maintain the basic maneuverability of 
the vehicle.
3 The hydraulic unit, which is the main component of  the ABS, is centrally located on the vehicle to 
increase mass centralization.
ABS layout
ABS
The operation of the Yamaha ABS brakes is the same  as...

FEATURES
1-10
Brake force:The force applied by braking to reduce the wheel speed.
 Wheel lock: A condition that occurs when the rotation of one or both of the wheels has stopped, but the vehicle 
continues to travel.
 Side force: The force on the tires which supports the vehicle when cornering.
 Slip ratio:
When the brakes are applied, slipping occurs betw een the tires and the road surface. This causes 
a difference between the wheel speed and the chassis  speed. Slip ratio is the value that shows...

FEATURES
1-11
Wheel slip and hydraulic control
The ABS ECU calculates the wheel speed of each wheel according to the rotation signal received 
from the front and rear wheel sensors. In addi tion, the ABS ECU calculates the vehicle chassis 
speed and the rate of speed reduction based on the wheel speed values.
The difference between the chassis speed and the wheel  speed calculated in the slip ratio formula is 
equal to the wheel slip. When the wheel speed is  suddenly reduced, the wheel has a tendency...