Yamaha FZS6W 07 User Manual

ELECTRICAL COMPONENTS
8-70
NOTE:
Voltage should be measured 30 minutes after 
the machine is stopped.
b. Connect a charged and AMP meter to the battery and start charging.
NOTE:
Set the charging voltage at 16–17 V. If the set-
ting is lower, charging  will be insufficient. If too 
high, the battery will be over-charged.
c. Make sure that the current is higher than 
the standard charging current written on 
the battery.
NOTE:
If the current is lower than the standard charg-
ing current written on the...

ELECTRICAL COMPONENTS
8-71
9. Lubricate: Battery terminals
10. Install:  Fuel tank
 Front cowling inner panel
Seat
EAS28040
CHECKING THE RELAYS
Check each switch for continuity with the 
pocket tester. If the continuity reading is incor-
rect, replace the relay.
1. Disconnect the relay from the wire harness.
2. Connect the pocket tester ( Ω ×  1) and bat-
tery (12 V) to the relay terminal as shown.
Check the relay operation.
Out of specification  → Replace.
Relay unit (starting circuit cut-off...

ELECTRICAL COMPONENTS
8-72
Radiator fan motor
EAS4S81032
CHECKING THE TURN SIGNAL/HAZARD 
RELAY
1. Check: Turn signal/hazard relay input voltage
Out of specification  → The wiring circuit 
from the main switch to the turn signal/haz-
ard relay coupler is faulty and must be 
repaired.
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a. Connect the pocket tester (DC 20 V) to the  turn signal/hazard relay terminal as shown. b. Turn the main switch to “ON”.
c. Measure the turn signal/hazard relay input 
voltage....

ELECTRICAL COMPONENTS
8-73
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a. Disconnect the relay unit coupler from the wire harness.
b. Connect the pocket tester ( Ω ×  1) to the 
relay unit terminal as shown.
c. Check the relay unit (diode) for continuity.
d. Check the relay unit (diode) for no continu-
ity.
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EAS28070
CHECKING THE SPARK PLUG CAPS
The following procedure applies to all of the 
spark plug caps.
1. Check: Spark plug cap resistanceOut of specification  → Replace....

ELECTRICAL COMPONENTS
8-74
EAS28100
CHECKING THE IGNITION COILS
The following procedure applies to all of the 
ignition coils.
1. Check: Primary coil resistanceOut of specification  → Replace.
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a. Disconnect the igniti on coil connectors 
from the ignition coil terminals.
b. Connect the pocket tester ( Ω ×  1) to the 
ignition coil as shown.
c. Measure the primary coil resistance.
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2. Check:  Secondary coil resistanceOut of specification  →...

ELECTRICAL COMPONENTS
8-75
e. Crank the engine by pushing the starter switch and gradually increase the spark 
gap until a misfire occurs.
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EAS28120
CHECKING THE CRANKSHAFT POSITION 
SENSOR
1. Disconnect: Crankshaft position sensor coupler
(from the wire harness)
2. Check:  Crankshaft position sensor resistance
Out of specification  → Replace the crank-
shaft position sensor.
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a. Connect the pocket tester ( Ω ×  100) to the 
crankshaft...

ELECTRICAL COMPONENTS
8-76
 This check is likely to produce sparks, therefore, make sure no flammable gas or 
fluid is in the vicinity.
b. Check the starter motor operation.
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2. Check:  Stator coil resistanceOut of specification  → Replace the stator 
coil.
EAS28150
CHECKING THE STATOR COIL
1. Disconnect:
 Stator coil coupler(from the wire harness)
2. Check:  Stator coil resistanceOut of specification  → Replace the stator 
coil.
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a....

ELECTRICAL COMPONENTS
8-77
EAS28180
CHECKING THE HORN
1. Check: Horn resistanceOut of specification  → Replace.
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a. Disconnect the horn leads from the horn 
terminals.
b. Connect the pocket tester ( Ω ×  1) to the 
horn terminals.
c. Measure the horn resistance.
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2. Check:  Horn soundFaulty sound  → Adjust or replace.
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a. Connect a battery (12 V) to the horn.
b. Turn the adjusting screw in direction “a” or 
“b”...

ELECTRICAL COMPONENTS
8-78
b. Measure the pickup coil resistance.
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EAS28230
CHECKING THE FUEL SENDER
1. Remove: Fuel tank
2. Disconnect:  Fuel pump coupler
 Fuel sender coupler
(from the wire harness)
3. Remove:
 Fuel pump(from the fuel tank)
4. Check:
 Fuel sender resistanceOut of specification  → Replace the fuel 
pump assembly.
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a. Connect the pocket tester ( Ω ×  10) to the 
fuel sender terminal as shown. b. Measure the fuel sender...

ELECTRICAL COMPONENTS
8-79
EAS28250
CHECKING THE RADIATOR FAN MOTOR
1. Check: Radiator fan motorFaulty/rough movement  → Replace.
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a. Disconnect the radiator fan motor coupler 
from the wire harness.
b. Connect the battery (DC 12 V) as shown.
c. Measure the radiator fan motor movement.
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EAS28260
CHECKING THE COOLANT TEMPERATURE 
SENSOR
1. Remove:  Coolant temperature sensor
WARNING
EWA14130
 Handle the coolant temperature sensor 
with...