battery YAMAHA WR 250F 2010 Owner's Manual

7-6
ELECTRIC STARTING SYSTEM
INSPECTION STEPS
If the starter motor will not operate, use the following inspection steps.
*1 marked: Refer to "CHECKING TH E FUSE" section in the CHAPTER 3.
*2 marked: Refer to "CHECKING AND CHARGIN G THE BATTERY" section in the CHAPTER 3.
*3 marked: Refer to "CHECKING THE MAIN SWITCH" section.
*4 marked: Refer to "CHECKING THE NEUTRAL SWITCH" section.
• Remove the following parts before inspection.
1. Seat
2. Rear fender
• Use 12 V battery in this inspection.
• Use the following special tools in this inspection.
*1 Check fuse. No good→Replace fuse and check wire harness.
OK ↓
*2 Check battery. No good→Recharge or replace.
OK ↓
Check each coupler and wire connection. No good →Repair or replace.
OK ↓
*3 Check main switch. No good→Replace.
OK ↓
Check starter motor operation. No good→Repair or replace.
OK ↓
Check starting circuit cut-off relay. No good→Replace.
OK ↓
Check starter relay. No good→Replace.
OK ↓
*4 Check neutral switch. No good→Replace.
OK ↓
Check clutch switch. No good→Replace.
OK ↓
Check diode. No good→Replace.
OK ↓
Check start switch. No good→Replace.
Pocket tester:
YU-3112-C/90890-03112

7-7
ELECTRIC STARTING SYSTEM
CHECKING THE COUPLERS AND
LEADS CONNECTION
1. Check:• Couplers and leads connection
Rust/dust/looseness/short-circuit
→ Repair or replace.
CHECKING THE STARTER
MOTOR OPERATION
1. Connect the posi tive battery ter-
minal "1" and starter motor lead
"2" with a jumper lead "3".
Not operate →Repair or replace
the starter motor.
• A wire that is used as a jumper lead must have at least the same
capacity or more as that of the
battery lead, otherwise the jump-
er lead may burn.
• This check is likely to produce
sparks, therefore make sure
nothing flammable is in the vicin-
ity.
CHECKING THE STARTING
CIRCUIT CUT-OFF RELAY
1. Remove:• Starting circuit cut-off relay
2. Inspect:
• Starting circuit cut-off relay con-duction
Use 12 V battery.
Not conductive while the battery is
connected →Replace.
Conductive while the battery is not
connected →Replace.
Set the tester selection position to " Ω
× 1".
CHECKING THE STARTER RELAY
1. Remove:
• Starter relay
2. Inspect: • Starter relay conduction
Use 12 V battery.
Not conductive while the battery is
connected →Replace.
Conductive while the battery is not
connected →Replace.
Set the tester selection position to " Ω
× 1".
CHECKING THE CLUTCH SWITCH
1. Inspect: • Clutch switch conduction
Not conductive while it is pulled →Re-
place.
Conductive while it is freed →Re-
place.
Set the tester selection position to " Ω
× 1".
CHECKING THE DIODE
1. Remove the diode from wire har- ness.
2. Inspect: • Diode continuity
Use pocket tester (tester selec-
tion position Ω × 1)
Incorrect continuity →Replace.
Battery (+) lead
→Blue/Black lead
"1"
Battery (-) lead →Brown lead "2"
Tester (+) lead →Blue/White lead
"3"
Tester (-) lead →Black lead "4"
Result Conductive (while the
battery is connected)
Battery (+) lead →Starter relay ter-
minal "1"
Battery (-) lead →Starter relay ter-
minal "2"
Tester (+) lead →Starter relay ter-
minal "3"
Tester (-) lead →Starter relay ter-
minal "4"
ResultConductive (while the
battery is connected)
Tester (+) lead →Black lead "1"
Tester (-) lead →Black lead "2"
Result Conductive (while the
clutch lever is pulled)
Tester (+) →Blue/Red
terminal "1"
Tester (-) →Sky blue
terminal "2" Continu-
ous
Tester (+) →Blue/Red
terminal "1"
Tester (-) →Blue/Yel-
low terminal "3" Continu-
ous
Tester (+) →Sky blue
terminal "2"
Tester (-) →Blue/Red
terminal "1" No con-
tinuous
Tester (+) →Blue/Yel-
low terminal "3"
Tester (-) →Blue/Red
terminal "1" No con-
tinuous

7-13
CHARGING SYSTEM
CHARGING SYSTEM
INSPECTION STEPS
If the battery is not charged, use the following inspection steps.
*1 marked: Refer to "CHECKING TH E FUSE" section in the CHAPTER 3.
*2 marked: Refer to "CHECKING AND CHARGIN G THE BATTERY" section in the CHAPTER 3.
• Remove the following parts before inspection.
1. Seat
2. Fuel tank
• Use the following special tools in this inspection.
*1 Check fuse. No good→Replace fuse and check wire harness.
OK ↓
*2 Check battery. No good→Recharge or replace.
OK ↓
Check each coupler and wire connection. No good →Repair or replace.
OK ↓
Check charging voltage. OK→ Charging system is good.
No good ↓
Check AC magneto. (Charging coil) No good→Replace.
OK ↓
Replace rectifier/regulator.
Pocket tester: YU-3112-C/90890-03112

7-19
LIGHTING SYSTEM
CHECKING THE TAILLIGHT
(LEDs)
1. Disconnect the taillight coupler.
2. Connect two jumper leads "1" from the battery terminals to the
respective coupler terminal as
shown.
3. Check: • LED (for proper operation)Does not light →Replace the tail-
light assembly.
• A wire that is used as a jumper lead must have at least the same
capacity of the battery lead, oth-
erwise the jumper lead may burn.
• This check is likely to produce sparks, therefore, make sure no
flammable gas or fluid is in the
vicinity.
CHECKING THE AC MAGNETO
1. Inspect:• Lighting coil resistance
Out of specification →Replace. CHECKING THE RECTIFIER/
REGULATOR
1. Connect the battery leads.
2. Start the engine.
3. Turn on the headlight and taillight
by turning on the light switch.
4. Inspect:
• Out-put voltageOut of specification →Replace
rectifier/regulator.
Battery (+) terminal
→Blue lead
"2"
Battery (-) terminal →Black lead
"3"
Tester (+) lead →Yellow lead "1"
Tester (-) lead →Ground "2"
Lighting
coil resis-
tance Tester se-
lector posi-
tion
0.224–0.336 Ω at 20 °C (68 °F) Ω × 1
Tester (+) lead
→Yellow lead "1"
Tester (-) lead →Black lead "2"
Out-put voltage Tester se-
lector posi- tion
12.5–13.5 V at 5,000 r/ min ACV-20

7-20
SIGNALING SYSTEM
SIGNALING SYSTEM
INSPECTION STEPS
If the speedometer will not operate, use the following inspection steps.
*1 marked: Refer to "CHECKING AND CHARGIN G THE BATTERY" section in the CHAPTER 3.
• Remove the following parts before inspection.
1. Headlight
• Use the following special tools in this inspection.
*1 Check battery. No good→Recharge or replace.
OK ↓
Check each coupler and wire connection. No good →Repair or replace.
OK ↓
Check multi-function display. (Input voltage) No good →Replace wire harness.
OK ↓
Check multi-function displa y. (Output voltage) No good →Replace multi-function display.
OK ↓
Check speed sensor. No good→Replace.
Pocket tester:
YU-3112-C/90890-03112