2020 YAMAHA YFZ50 battery

8-35
83. Hook the battery band.
4. Install the panel.
TIP
Make sure the positive and negative battery
leads are installed as shown.
 Fully charge the battery before installing it.
EBU36415Replacing the fuseIf an electrical problem is suspected, check the
fuse and replace it if necessary as follows.NOTICEECB00641To prevent accidental short-circuiting, turn off
the main switch when checking or replacing a
fuse. 1. Turn off all electrical systems. (See page 4-1.)
2. Remove panel A. (See page 8-9.)
1. Positive battery lead (red)
2. Negative battery lead (black)2
1
1. Fuse
2. Spare fuse21
UBW463E0.book Page 35 Monday, January 28, 2019 10:22 AM

8-38
8
EBU25812Troubleshooting chart
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.
The engine does not start.
Check the ignition.
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.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.
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.
Recharge the battery or use the
kickstarter.
DryWet
Open the throttle halfway and try
starting the engine.
UBW463E0.book Page 38 Monday, January 28, 2019 10:22 AM

9-3
9e. Install the spark plug and the spark plug
cap.
6. Lubricate all control cables and the pivoting points of all levers.
7. Put the frame on stands or blocks to raise all wheels off the ground. (Alternatively, turn the
wheels each month to prevent the tires from
degrading in one spot.)
8. Cover the muffler outlet with a plastic bag to prevent moisture from entering it.
9. Remove the battery and fully charge it. (See page 8-32.)
UBW463E0.book Page 3 Monday, January 28, 2019 10:22 AM

10-4
10
Electrical system:System voltage:12 V
Ignition system:
CDI
Charging system: AC magnetoBattery:Model:
GTX5L-BS
Voltage, capacity: 12 V, 4.0 AhFuses:Main fuse:
7.5 AEBU30403Noise 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
levels, this cannot be used reliably to determine
whether or not further precautions are required.
Factors that influence the actual level of exposure
of work-force include the characteristics of the
work room, the other sources of noise, etc. i.e. the
number of machines and other adjacent process- es, and the length of time for which an operator is
exposed to the noise. Also the permissible expo-
sure level can vary from country. This information,
however, will enable the user of the machine to
make a better evaluation of the hazard and risk.UBW463E0.book Page 4 Monday, January 28, 2019 10:22 AM

12-1
12
INDEX
AAccessories and loading ................................................ 6-5
Air filter element, cleaning ........................................... 8-16BBattery ......................................................................... 8-32
Brake lever free play, adjusting the front ..................... 8-24
Brake lever free play (rear), adjusting .......................... 8-26
Brake lever, front ........................................................... 4-5
Brake lever, rear ............................................................. 4-6
Brake levers, checking and lubricating ........................ 8-30
Brakes .......................................................................... 8-22
Brakes, front and rear .................................................... 5-3CCables, checking and lubricating ................................ 8-29
Carburetor, adjusting ................................................... 8-20
Chassis fasteners .......................................................... 5-6
Cleaning ......................................................................... 9-1DDrive chain ..................................................................... 5-3
Drive chain, cleaning and lubricating ........................... 8-29
Drive chain slack .......................................................... 8-26EEngine break-in .............................................................. 6-3
Engine, cold start ........................................................... 6-1
Engine idling speed ..................................................... 8-20
Engine oil ..............................................................5-3, 8-11
Engine, starting a warm ................................................. 6-3
Engine stop switch ........................................................ 4-1
Engine stop switch with lanyard .................................... 4-2
FFront and rear brake shoes, checking ......................... 8-23
Front arm pivots, lubricating ........................................ 8-31
Front knuckle pivots, lubricating ................................. 8-31
Fuel ......................................................................... 4-9, 5-3
Fuel cock ..................................................................... 4-10
Fuel tank cap ................................................................. 4-8
Fuse, replacing ............................................................ 8-35HHandlebar switches ....................................................... 4-1IIdentification numbers ................................................. 11-1
Instruments and switches .............................................. 5-6KKickstarter ...................................................................... 4-7LLabel locations ............................................................... 1-1MMain switch .................................................................... 4-1
Maintenance and lubrication chart ................................ 8-5
Maintenance chart, emission control system ................ 8-3
Model label .................................................................. 11-1OOwner’s Manual and tool kit .......................................... 8-2PPanel, removing and installing ....................................... 8-9
Parking ........................................................................... 6-3
Parking brake ................................................................. 4-6
Parking on a slope ......................................................... 6-4
UBW463E0.book Page 1 Monday, January 28, 2019 10:22 AM