Troubleshooting - Yamaha YFM 400 FWA P Service Manual

EB803020

TROUBLESHOOTING

IF THE STARTER MOTOR FAILS TO OPERATE:
Procedure
Check:
1.Fuse (main, ignition)
2.Battery
3.Starter motor
4.Starter relay
5.Main switch
6.Engine stop switch
NOTE:
Remove the following part(s) before trouble-
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shooting:
1)Seat
2)Fuel tank side panels
3)Fuel tank
4)Air cleaner case
5)Front carrier
6)Front fender panel
Use the following special tool(s) for trouble-
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shooting.
EB802011
1.Fuse (main, ignition)
Refer to "SWITCH INSPECTION". (Manual
No.: 5GH3-AE1)
EB802012
2.Battery
Check the battery condition.
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Refer to "BATTERY INSPECTION" in
CHAPTER 3. (Manual No.: 5GH3-AE1)
Open-circuit voltage:
12.8 V or more at 20 °C (68 °F)
ELECTRIC STARTING SYSTEM
CONTINUITY
CORRECT
*
7.Neutral switch
8.Rear brake switch
9.Park switch
10.Start switch
11.Wiring connection (the entire starting sys-
tem)
Pocket tester:
P/N. YU-03112, 90890-03112
NO CONTINUITY
Replace the fuse.
INCORRECT
Clean the battery terminals.
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Recharge or replace the battery.
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