9-11
9To remove the spark plug
1. Remove the spark plug cap.
2. Remove the spark plug as shown, with the spark plug wrench included in the tool kit. To check the spark plug
1. Check that the porcelain insulator around the center electrode of the spark plug is a medi-
um-to-light tan (the ideal color when the ATV
is ridden normally).
TIPIf the spark plug shows a distinctly different color,
the engine could be operating improperly. Do not
attempt to diagnose such problems yourself. In-
stead, have a Yamaha dealer check the ATV.
1. Spark plug cap
1
1. Spark plug wrench
1
UBCX60E0.book Page 11 Friday, April 19, 2019 9:09 AM
9-51
9If 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 5-1.)
2. Remove the seat. (See page 5-12.) 3. Remove the blown fuse, and then install a
new fuse of the specified amperage.
WARNING! Always use a fuse of the spec-
ified rating, and never use a substitute ob-
ject in place of the proper fuse. An
improper fuse or a substitute object can
cause damage to the electrical system,
which could lead to a fire.
[EWB02173]
4. Turn on the main switch and start the engine.
5. If the fuse immediately blows again, have aYamaha dealer check the vehicle.
6. Install the seat.
1. Fuel injection system fuse
2. Radiator fan motor fuse
3. Ignition fuse
4. Signaling system fuse
5. Headlight fuse
6. Spare fuse
1
2
3
45
6
Specified fuses:
Main fuse:30.0 A
Headlight fuse: 10.0 A
Ignition fuse: 10.0 A
Signaling system fuse: 10.0 A
Radiator fan motor fuse: 20.0 A
Fuel injection system fuse: 10.0 A
UBCX60E0.book Page 51 Friday, April 19, 2019 9:09 AM
12-1
12
INDEX
AAccessories and loading ................................................ 7-6
Air filter element, cleaning ........................................... 9-22BBattery ......................................................................... 9-47
Brake and clutch levers, checking and lubricating ...... 9-43
Brake fluid, changing ................................................... 9-34
Brake fluid level, checking ........................................... 9-31
Brake lever ..................................................................... 5-6
Brake lever free play, checking the front ..................... 9-35
Brake light switches ..................................................... 9-37
Brake pads, checking the front and rear ..................... 9-30
Brake pedal .................................................................... 5-7
Brake pedal, checking and lubricating ........................ 9-43
Brake pedal height, checking ...................................... 9-35
Brakes .......................................................................... 9-30
Brakes, front and rear .................................................... 6-4
Brake/tail light .............................................................. 9-54CCables, checking and lubricating ................................ 9-42
Chassis fasteners .......................................................... 6-7
Cleaning ....................................................................... 10-1
Clutch lever .................................................................... 5-5
Clutch lever free play, adjusting .................................. 9-38
Coolant .................................................................6-4, 9-18
Coolant temperature warning light ................................ 5-2DDrive chain ..................................................................... 6-5
Drive chain, lubricating ................................................ 9-41 Drive chain slack .......................................................... 9-39
EEngine break-in .............................................................. 7-5
Engine idling speed ..................................................... 9-28
Engine oil ....................................................................... 6-4
Engine oil and oil filter element .................................... 9-13
Engine, start ................................................................... 7-1
Engine stop switch ........................................................ 5-4
Engine trouble warning light .......................................... 5-3FFuel ....................................................................... 5-10, 6-4
Fuel level warning light .................................................. 5-2
Fuel tank cap ................................................................. 5-9
Fuses, replacing .......................................................... 9-50HHandlebar switches ....................................................... 5-3
Headlight beam, adjusting ........................................... 9-53
Headlight bulb, replacing ............................................. 9-52IIdentification numbers ................................................... 1-1
Indicator lights and warning lights ................................. 5-1
Instruments, lights and switches ................................... 6-7LLabel locations ............................................................... 2-1
Light switch ................................................................... 5-4MMain switch .................................................................... 5-1
Maintenance and lubrication chart ................................ 9-5
Maintenance chart, emission control system ................ 9-3
UBCX60E0.book Page 1 Friday, April 19, 2019 9:09 AM
