Page 299 of 382

CARBURETOR ASSEMBLY
6-14
CARB
10. Install:
•Float pin (1)
NOTE:
Assemble the float pin in the opposite direction to
the arrow.
11. Measure:
•Float height (a)
Out of specification ➔Adjust.
Float height: 27.0 - 29.0 mm
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
Measurement and adjustment:
•Hold the carburetor upside down.
•Measure the distance from the joint plane of
the float chamber (without the gasket) and the
top of the float.
NOTE:
The float arm must rest on the neeedle valve
without being pressed.
•If the float height is out of tolerance, check the
valve seat and the needle valve.
•If either is worn, replace both.
•If both are perfect, adjust the float height by
bending the wing tab of the float itself (1).
•Recheck the float height.
12. Install:
•Float chamber
Screw (float chamber): 2 Nm (0.2 mkg)
13. Adjust:
•Pilot air screw (1)
Adjustment:
•Turn the screw until it is slightly locked.
•Unscrew by 3 and 1/2 turns.
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Page 303 of 382

ELEC
CHAPTER 7
ELECTRICAL
ELECTRICAL CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
COLOUR CODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
ELECTRICAL COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
SWITCH CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
SWITCH CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
MAIN SWITCH INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
LIGHT INSPECTION (HEADLIGHTS, TAIL LIGHT AND BRAKE LIGHTS,
DIRECTION INDICATOR LIGHTS, INSTRUMENT LIGHTS, ETC) . . . . . . . . . . . . . . . . . 7-8
BULB TYPES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
BULB INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
IGNITION SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11
CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11
DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13
ELECTRICAL STARTING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21
CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21
STARTING CIRCUIT OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23
DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-24
STARTER MOTOR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-30
CHARGING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-35
CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-35
DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-37
LIGHT SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-41
CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-41
DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-43
LIGHT SYSTEM INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-46
SIGNALLING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-51
CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-51
DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-53
SIGNAL SYSTEM CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-55
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Page 305 of 382

ELECELECTRICAL CIRCUIT DIAGRAM
7-1
467C4B5CAMP403D494A4856 172320-2
GWLY
BB
B
BBLWRB
R
B
B
B
RLBOrRBLYGW
Or
B
LW
MAIN HARNESSB
B
B
Y Y
LBG
LGRBLYGWLWLBOrRB
LW
GY
GY
RBBr
Br187
GB
12V10W
BL12V5WBY G
12V60/55WBGYAA
12V10W
A
GB
BrBBrB
BGBB
GBBGBB
BrB
12V10WB
B
BrL
GB
12V10WB
B
187
BYB
R
B
BrL
WWB
OFF
BrL
W
B
W
BB
B
B BLB
BBrB
G
B
BrB
Br
OFF
B
EXT. CORD
Br
GY
BL
G
Y
GYB
B
L
GB
BrB
LR
LR Sb
B
RW
-
LR
L
BrL
GBSbB
BrB
YBrBrB
YBrGB
B
Ch
DgBrY
BrB
HIGH
TURN
NEU.ILL.
B
BrL
BrL
LBBY
LY LB
LY
GWB
RBOr
205
B
RBL
BrL
Br
PARKOFFON
ON
ON
Sb
L
GB
GY
GY
RBLYBY
LYBY
RUN
LW
B
B
LY
BY
LBrRR
LWRB
GB
R
B
GW
BrBrW
WB
Br
LY
WB
Sb
B
GWLY
(BLUE)B
B
LYB
OFF
BrRB
LWRB
Y
P
G
GB BBrWBrL
BrB
W
WW
GYBr
GY
Y
P
G
GB B
BrWBrL
BrB
Y
N
RL
LOWHIGH
BrW Br
P
PBr
LY
B
GWLY
Or
RB
Br
LW
BY
BY
START
OFF
R
B
GWLY
W
W W
W
W
W
W
RW
W
W
Sb
B
Sb
BBrBB
-
-
B
LR
WRW
B
-
AL
L
GY
LB
Br
WB
RB
MAIN HARNESS
AHEAD LIGHT
B
B
BrB
17
16
11
12
13
14
15
91029
8
5
3
12
6428
20
21
22
19
2325
24
30
31
27
267
32
18
BrW
ELECTRICAL - ELECTRICAL CIRCUIT DIAGRAM
ProCarManuals.com
Page 306 of 382

ELECTRICAL CIRCUIT DIAGRAM
7-2
ELEC
B Black B/Y Black/Yellow
Br Brown Br/B Brown/Black
Ch Chocolate Br/W Brown/White
Dg Deep green G/B Green/Black
G Green G/R Green/Red
Gy Grey G/W Green/White
L Blue G/Y Green/Yellow
Or Orange L/R Blue/Red
P Pink L/W Blue/White
R Red L/Y Blue/Yellow
Sb Sky-blue R/B Red/Black
W White R/W Red/White
Y Yellow R/Y Red/Yellow
B/R Black/Red W/L White/Blue
B/W Black/White Y/R Yellow/Red
(1) AC generator/Pickup coil
(2) Rectifier/Regulator
(3) Battery
(4) Starter relay
(5) Starting motor
(6) Fuse
(7) Main switch
(8) Right handlebar switch
(9) Engine stop switch
(10) Starter switch
(11) Diode
(12) Clutch switch
(13) Sidestand switch
(14) Neutral switch
(15) Diode
(16) Ignitor unit
COLOUR CODE (17) Ignition coil
(18) Left handlebar switch
(19) Horn switch
(20) Diode
(21) Pass switch
(22) Dimmer switch
(23) Flasher switch
(24) Horn
(25) Flasher relay
(26) Headlight
(27) Flasher light
(28) Relay assy
(29) Front brake switch
(30) Rear brake switch
(31) Tail/stop light
(32) Meter
ProCarManuals.com
Page 309 of 382

ELECSWITCH CHECK
7-5
SWITCH CHECK
Check the continuity between the switch terminals
to verify whether connections are correct.
To check the switch, read the following points.
SWITCH CONNECTION
The table shown here contains the connections
between the switch terminals (eg main switch,
handlebar switches, brake switch, light switch etc).
The column on the far left shows the positions of
the main switch and the top line indicates the
colours of the cables connected with the terminals
of the switch itself.
“o––––o” indicates the terminals between which
there is electrical continuity, ie a closed circuit on
the respective switch positions.
For example, in this table:
“R” and “Br” are continuous when the switch is at
ON.
“L” and “R/B” are continuous when the switch is at
ON.
“R” and “L” are continuous when the switch is at
PARK.
Terminals are not continuous when the switch is at
OFF.
MAIN SWITCH INSPECTION
Before inspecting the switch, see the connection
table shown above and check the terminal con-
nections (closed circuit) by the colour combination.
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Page 312 of 382

LIGHT INSPECTION
7-8
ELEC
LIGHT INSPECTION (HEADLIGHTS,
TAIL LIGHT AND BRAKE LIGHTS,
DIRECTION INDICATOR LIGHTS,
INSTRUMENT LIGHTS, ETC)
Check the continuity between the bulb terminals to
see that they are undamaged.
BULB TYPES
The bulbs used are classified as shown to the left
according to type of attachment.
(B) is H4 type halogen bulb (12V - 55/60W) and it
is used for headlight.
Avoid touching the glass part of a bulb. Keep it
free from oil; otherwise, the transparency of
the glass, life of the bulb, and luminous flux will
be adversely affected. If oil gets on a bulb,
thoroughly clean it with a cloth moistened with
alcohol or lacquer thinner.
(A) and (C) are used mainly for headlights.
(D) is used mainly for direction indicator lights and
the rear and braking lights.
(E) and (F) are used especially for instrument and
other indication lights.
BULB INSPECTION
1. Remove the bulb.
NOTE:
•Bulbs of type (B) and (C) use special supports
(bulbholders). Remove the bulbholder before
removing the bulb. Most of these bulbholders
may be removed by turning in an anticlockwise
direction.
•Most bulbs of type (A), (D) and (E) may be
removed from their housing by pushing them
and turning them in an anticlockwise direction.
•Bulbs of type (F) may be removed simply by
pulling them out.
CAUTION:
A
F
CB
ED
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Page 313 of 382

ELECLIGHT INSPECTION
7-9
When removing a bulb be careful to hold the
bulbholder or its housing firmly. Never pull the
cable, as it might detach from the terminal
inside the connector.
CAUTION:
WARNING
Keep inflammable products and hands well
away from bulbs when they are on (danger of
burns and fire). Do not touch the bulb before it
is cool.
2. Check the continuity between the bulb termi- nals.
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
Control procedure:
•Set the tester selector to Ωx 1”.
•Connect the tester terminals to the bulb pins.
Take, for example, a three pin bulb as shown
in the figure. First check continuity between
pins (1) and (2), connecting tester terminal (+)
to pin (1) and terminal (–) to pole (2). Then
check the continuity between poles (1) and
(3), again connecting tester terminal (+) to
pole (1), and terminal (–) to pole (3). If the
tester indicates “ ∞”, even in one case only, the
bulb must be replaced.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
3. . Check the bulb attachment by installing a test bulb. Furthermore, during inspection of
the bulbs, connect the tester terminals to the
respective socket cables and check continuity
as described.
ProCarManuals.com
Page 315 of 382

ELECIGNITION SYSTEM
7-11
467C4B5CAMP403D494A4856 172320-2
GWLY
BB
B
BBLWRB
R
B
B
B
RLBOrRBLYGW
Or
B
LW
MAIN HARNESSB
B
B
Y Y
LBG
LGRBLYGWLWLBOrRB
LW
GY
GY
RBBr
Br187
GB
12V10W
BL12V5WBY G
12V60/55WBGYAA
12V10W
A
GB
BrBBrB
BGBB
GBBGBB
BrB
12V10WB
B
BrL
GB
12V10WB
B
187
BY
B
R
B
BrL
WWB
OFF
BrL
W
B
W
BB
B
B BLB
BBrB
G
B
BrB
Br
OFF
B
EXT. CORD
Br
GY
BL
G
Y
GYB
B
L
GB
BrB
LR
LR Sb
B
RW
-
LR
L
BrL
GBSbB
BrB
YBrBrB
YBrGB
B
Ch
DgBrY
BrB
HIGH
TURN
NEU.ILL.
B
BrL
BrL
LBBY
LY LB
LY
GWB
RBOr
205
B
RBL
BrL
Br
PARKOFFON
ON
ON
Sb
L
GB
GY
G
Y
RBLYBY
LYBY
RUN
LW
B
B
LY
BY
LBrRR
LWRB
GB
R
B
GW
BrBrW
WB
Br
LY
WB
Sb
B
GWLY
(BLUE)B
B
LYB
OFF
BrRB
LWRB
Y
P
G
GB BBrWBrL
BrB
W
WW
GYBr
GY
Y
P
G
GB B
BrWBrL
BrB
Y
N
RL
LOWHIGH
BrW Br
P
PBr
LY
B
GWLY
Or
RB
Br
LW
BY
BY
START
OFF
R
B
GWLY
W
W W
W
W
W
W
RW
W
W
Sb
B
Sb
BBrBB
-
-
B
LR
WRW
B
-
AL
L
GY
LB
Br
WB
RB
MAIN HARNESS
AHEAD LIGHT
B
B
BrB
17
16
11
12
13
14
15
91029
8
5
3
12
6428
20
21
22
19
2325
24
30
31
27
267
32
18
BrW
IGNITION SYSTEM -CIRCUIT DIAGRAM
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