2018 YAMAHA YFZ450R lights

5-7
5
Aftermarket tires and rims
The tires and rims that came with your ATV were
designed to match the performance capabilities
and to provide the best combination of handling,
braking, and comfort. Other tires, rims, sizes, and
combinations may not be appropriate.
EBU19841Chassis fastenersMake sure that all nuts, bolts and screws are
properly tightened.
EBU19851Instruments, lights and switchesCheck that all instruments, lights and switches are
working properly. Correct if necessary.
Front:
Manufacturer/model:MAXXIS/MS21
Size: AT21 x 7R10
Ty p e : Tu b e l e s s
Rear: Manufacturer/model:MAXXIS/MS22
Size: AT20 x 10R9
Ty p e : Tu b e l e s s
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6
EBU19882
OPERATION
EBU19902Read the Owner’s Manual carefully before riding
the ATV. If there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWB00632Read the Owner’s Manual carefully to become
familiar with all controls in order to help pre-
vent any loss of control, which could cause an
accident or injury. EBU29954Starting the engineNOTICEECB00151See the “Engine break-in” section on page 6-4
prior to operating the engine for the first time. 1. Set the parking brake.
2. Turn the key to “ ” (on) and the engine stopswitch to “ ”.
The following warning lights should come on
for a few seconds, then go off. 
Coolant temperature warning light
 Fuel level warning light
 Engine trouble warning light
NOTICEECB00826To avoid possible damage, do not operate the
ATV if a warning light does not work as de-
scribed above. 3. Shift the transmission into neutral. The neutral
indicator light should come on, if it does not
come on, have a Yamaha dealer check the
electrical circuit.TIPThis model is equipped with an ignition circuit cut-
off system. The engine can be started under the
following conditions.
The transmission is in neutral.
 The clutch is disengaged with the transmission
in gear. However, it is recommended to shift
into neutral before starting the engine. 4. Completely close the throttle lever and start
the engine by pushing the start switch.
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8
EBU29431TIPSome maintenance items need more frequent service if you are riding in unusually wet, dusty, sandy or
muddy areas, or at full-throttle.
 Replace the fuel hose every five years and if cracked or damaged.
 Hydraulic brake service
• Regularly check and, if necessary, correct the brake fluid level.
• Every two years replace the internal components of the brake master cylinders and calipers, and
change the brake fluid.23 *Moving parts and
cables • Lubricate.
√√√√
24 *Throttle lever • Check operation.
• Check throttle lever free play, and adjust if neces-
sary.
• Lubricate cable and lever housing. √√√√√
25 *Front and rear
brake switches • Check operation and correct if necessary.
√√√√√
26 *Lights and switches • Check operation and correct if necessary.
• Adjust headlight beams. √√√√√
NO. ITEM
CHECK OR MAINTENANCE
JOB INITIAL EVERY
Whichev-
er comes first month136612
km (mi) 320
(200) 1300
(800) 2500
(1600) 2500
(1600) 5000
(3200)
hours 20 80 160 160 320UBW261E0.book Page 8 Friday, May 26, 2017 9:38 AM

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8
EBU25741TroubleshootingAlthough Yamaha ATVs receive a thorough in-
spection before shipment from the factory, trouble
may occur during operation. Any problem in the
fuel, compression, or ignition systems, for exam-
ple, can cause poor starting and loss of power.
The following troubleshooting charts represent
quick and easy procedures for checking these vi-
tal systems yourself. However, should your ATV
require any repair, take it to a Yamaha dealer,
whose skilled technicians have the necessary
tools, experience, and know-how to service the
ATV properly.
Use only genuine Yamaha replacement parts. Im-
itation parts may look like Yamaha parts, but they
are often inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWB02281Do not smoke when checking the fuel system.
Fuel can ignite or explode, causing severe inju-
ry or property damage. Make sure there are no
open flames or sparks in the area, including pi-
lot lights from water heaters or furnaces.
Tightening torques:Front wheel nut:45 N·m (4.5 kgf·m, 33 lb·ft)
Rear wheel nut: 45 N·m (4.5 kgf·m, 33 lb·ft)
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12
INDEX
AAccessories and loading ................................................ 6-5
Air filter element, cleaning ........................................... 8-21BBattery ......................................................................... 8-42
Brake and clutch levers, checking and lubricating ...... 8-39
Brake fluid, changing ................................................... 8-31
Brake fluid level, checking ........................................... 8-29
Brake lever ..................................................................... 4-5
Brake lever free play, checking the front ..................... 8-31
Brake light switches ..................................................... 8-34
Brake pads, checking the front and rear ..................... 8-28
Brake pedal .................................................................... 4-6
Brake pedal, checking and lubricating ........................ 8-39
Brake pedal height, checking ...................................... 8-32
Brakes .......................................................................... 8-28
Brakes, front and rear .................................................... 5-4CCables, checking and lubricating ................................ 8-38
Chassis fasteners .......................................................... 5-7
Cleaning ......................................................................... 9-1
Clutch lever .................................................................... 4-5
Clutch lever free play, adjusting .................................. 8-34
Coolant .................................................................5-4, 8-20
Coolant temperature warning light ................................ 4-2
Cowling and panels, removing and installing .............. 8-10DDrive chain ..................................................................... 5-5
Drive chain, lubricating ................................................ 8-37 Drive chain slack .......................................................... 8-35
EEngine break-in .............................................................. 6-4
Engine oil ....................................................................... 5-4
Engine oil and oil filter element .................................... 8-14
Engine, start ................................................................... 6-1
Engine stop switch ........................................................ 4-3
Engine trouble warning light .......................................... 4-2FFuel ......................................................................... 4-8, 5-4
Fuel level warning light .................................................. 4-2
Fuel tank cap ................................................................. 4-8
Fuse, replacing ............................................................ 8-45HHandlebar position, adjusting ...................................... 4-23
Handlebar switches ....................................................... 4-3
Headlight beam, adjusting ........................................... 8-48
Headlight bulb, replacing ............................................. 8-46IIdentification numbers ................................................. 11-1
Indicator light and warning lights ................................... 4-1
Instruments, lights and switches ................................... 5-7LLabel locations ............................................................... 1-1
Light switch ................................................................... 4-3MMain switch .................................................................... 4-1
Maintenance and lubrication chart ................................ 8-5
Maintenance chart, emission control system ................ 8-3
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