Yamaha Fz6n Manual

8-23
STARTER MOTORELEC
3.4 Nm (0.34 m
kg, 2.5 ft
lb)
NOTE: 3. Install:

starter motor yoke 
1

O-ring 2 New

front cover 
3

rear cover 4

bolts 5
Align the match marks a on the starter motor
yoke with the match marks 
b on the front and
starter motor rear covers. 

8-24
2A.C. magneto
3Rectifier / regulator
6Fuse (main)
9Battery
CHARGING SYSTEMELEC
EAS00773
CHARGING SYSTEM
CIRCUIT DIAGRAM 

8-25
NOYES
3. Charging voltage

Set the engine tachometer to the ignition coil
of cylinder #1.

Connect the pocket tester (DC 20 V) to the
battery as shown.
The charging circuit
is OK. Positive tester probe 
 
positive battery terminal
Negative tester probe 
 
negative battery terminal

Start the engine and let it run at approxi-
mately 5,000 r / min.

Measure the charging voltage.
Charging voltage
14 V at 5,000 r / min

Is the charging voltage within specification?
EAS00775
YESNO

Clean the battery...

8-26
CHARGING SYSTEMELEC
YESNO 5. Stator coil resistance

Remove the generator cover.

Connect the pocket tester (Ω 
 1) to the sta-
tor coils as shown.
Replace the stator
coil assembly.
EAS00776
Positive tester probe 
 white 
Negative tester probe 
 white
Positive tester probe 
 white 
Negative tester probe 
 white1
1
2
3

Measure the stator coil resistances.
Stator coil resistance
0.22  0.34 Ω at 20C (68F)

Is the stator coil OK?
YESNO 6. Wiring

Check the wiring connections of the entire
charging...

8-27
LIGHTING SYSTEMELEC
EAS00780
LIGHTING SYSTEM
CIRCUIT DIAGRAM 

8-28
LIGHTING SYSTEMELEC
1Main switch
6Fuse (main)
9Battery
20ECU
35High beam indicator light
46Fuse (headlight)
47Fuse (ignition)
48Fuse (tail)
51License plate light
52Tail / brake light
55Dimmer switch
60Dimmer relay
61Headlight (high beam)
62Headlight (low beam)
65Front turn signal / position light (right)
66Front turn signal / position light (left) 

8-29
YESNO

Clean the battery
terminals.

Recharge or re-
place the battery.
EAS00749
3. Main switch

Check the main switch for continuity.
Refer to “CHECKING THE SWITCHES”.

Is the main switch OK?
YESNO
Replace the main
switch.
EAS00784
YESNO 4. Dimmer switch

Check the dimmer switch for continuity.
Refer to “CHECKING THE SWITCHES”.

Is the dimmer switch OK?
The dimmer switch is
faulty. Replace the
left handlebar switch.
Minimum open-circuit voltage
12.8 V or more at 20C (68F)

Is the battery OK?...

8-30

Does the dimmer relay have continuity be-
tween red / yellow and green?
NOYES
Replace the dimmer
relay. Positive tester probe 
 red / yellow 
Negative tester probe 
 green
1
2
3
4
5. Dimmer relay

Disconnect the dimmer relay from the cou-
pler.

Connect the pocket tester (Ω 
 1) and bat-
tery (12 V) to the dimmer relay as shown.
Positive battery lead 
 red / yellow 
Negative battery lead 
 yellow / black
EAS00787
YESNO 6. Wiring

Check the entire lighting system’s wiring.
Refer to “CIRCUIT...

8-31
High beam indicator light (LEDs)
Positive tester probe 
 yellow 
Negative tester probe 

black / white 
YESNO 1. Headlight bulb and socket

Check the headlight bulb and socket for con-
tinuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.

Are the headlight bulb and socket OK?
Replace the head-
light bulb, socket or
both.
YESNO 2. Voltage

Connect the pocket tester (DC 20 V) to the
headlight and meter assembly couplers as
shown.
The wiring circuit
from the main switch
to the headlight cou-
pler...

8-32
LIGHTING SYSTEMELEC
YESNO 1. License plate light bulb and socket

Check the license plate light bulb and socket
for continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.

Are the license plate light bulb and socket
OK?
Replace the license
plate light bulb, sock-
et or both.
EAS007922. The license plate light fails to come on.
YESNO 2. Voltage

Connect the pocket tester (DC 20 V) to the
license plate light coupler (wire harness light
side) as shown.
The wiring circuit
from the main switch
to...