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8
EBU27696Troubleshooting chartsStarting problems or poor engine performance
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.There is no fuel.
Check the battery.
Supply fuel.
The engine does not start.
Check the battery.
Operate the electric starter.4. Compression
There is compression.
There is no compression.
The engine does not start.
Have a Yamaha dealer check the ATV.
Remove the spark plug
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug. Have a Yamaha dealer check the ATV.
The engine does not start.
Check the compression.
DryWet
Operate the electric starter.
Have a Yamaha dealer check the ATV.
The engine does not start.
Check the ignition.
Operate the electric starter.2. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check the battery lead connections,
and have a Yamaha dealer charge
the battery if necessary.
UBB561E0.book Page 66 Monday, March 26, 2018 11:15 AM
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Electrical system:System voltage:12 V
Ignition system:
TCI
Charging system: AC magnetoBattery:Model:
YTX20L-BS
Voltage, capacity: 12 V, 18.0 AhLights:Headlight:
T19L, 30.0 W/30.0 W
Handlebar-mounted light: T15H, 35.0 W/36.5 W (YFM45KPHK, YFM45KPLK,
YFM45KPXK)
Brake/tail light: 21.0 W/5.0 W
Meter lighting: LED
Neutral indicator light:
LED
Reverse indicator light: LED
Coolant temperature warning light: LED
Parking brake indicator light:
LED
Four-wheel-drive indicator light: LED Engine trouble warning light:
LED
EPS warning light: LED (YFM45KPHK, YFM45KPLK, YFM45KPXK)
Fuses:Main fuse:40.0 A
Headlight fuse: 15.0 A
Signaling system fuse:
10.0 A
Ignition fuse: 10.0 A
Auxiliary DC jack fuse: 10.0 A
Fuel injection system fuse:
10.0 A
Four-wheel-drive motor fuse: 3.0 A
Radiator fan motor fuse: 20.0 A
EPS fuse:
40.0 A (YFM45KPHK, YFM45KPLK, YFM45KPXK)EBU30403Noise and vibration levels statement (for Eu-
rope)
The figures quoted are emission levels and are not
necessarily safe working levels. Whilst there is a
correlation between the emission and exposure
UBB561E0.book Page 5 Monday, March 26, 2018 11:15 AM
