2012 YAMAHA YFZ450R lights

8-8
8
EBU29430TIP
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.
 Replace the brake hoses every four years and if cracked or damaged.23 *Throttle lever 
Check operation.
 Check throttle lever free play, and adjust if neces-
sary.
 Lubricate cable and lever housing. √√√√√
24 *Front and rear brake
switches

Check operation and correct if necessary. √√√√√
25 *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 320U18P66E0.book Page 8 Monday, May 16, 2011 4:23 PM

8-52
8
EBU25740Troubleshooting Although Yamaha ATVs receive a thorough in-
spection before shipment from the factory, trouble
may occur during operation. Any problem in the fu-
el, compression, or ignition systems, for example,
can cause poor starting and loss of power.
The following troubleshooting charts represent
quick and easy procedures for checking these vital
systems yourself. However, should your ATV re-
quire any repair, take it to a Yamaha dealer, whose
skilled technicians have the necessary tools, expe-
rience, 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
EWB02280Do 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.U18P66E0.book Page 52 Monday, May 16, 2011 4:23 PM

INDEX
AAccessories and loading ................................................ 6-6
Air filter element, cleaning ............................................ 8-23BBattery .......................................................................... 8-45
Brake and clutch levers, checking and lubricating ....... 8-41
Brake fluid, changing ................................................... 8-33
Brake fluid level, checking ........................................... 8-32
Brake lever ..................................................................... 4-6
Brake lever free play, checking the front ...................... 8-33
Brake light switches ..................................................... 8-36
Brake pads, checking the front and rear ...................... 8-30
Brake pedal .................................................................... 4-6
Brake pedal, checking and lubricating ......................... 8-42
Brake pedal height, checking ....................................... 8-34
Brakes .......................................................................... 8-30
Brakes, front and rear .................................................... 5-4CCables, checking and lubricating ................................. 8-40
Chassis fasteners .......................................................... 5-7
Cleaning ......................................................................... 9-1
Clutch lever .................................................................... 4-5
Clutch lever free play, adjusting ................................... 8-36
Coolant .................................................................. 5-4, 8-22
Coolant temperature warning light ................................. 4-2
Cowling and panels, removing and installing ................. 8-9DDrive chain ..................................................................... 5-5Drive chain, lubricating ................................................ 8-40
Drive chain slack .......................................................... 8-38
EEngine break-in .............................................................. 6-4
Engine oil ....................................................................... 5-4
Engine oil and oil filter element .................................... 8-16
Engine, start ................................................................... 6-1
Engine stop switch ......................................................... 4-3
Engine trouble warning light .......................................... 4-3FFuel ......................................................................... 4-9, 5-4
Fuel level warning light .................................................. 4-3
Fuel tank cap ................................................................. 4-8
Fuse, replacing ............................................................ 8-47HHandlebar position, adjusting ...................................... 4-24
Handlebar switches ....................................................... 4-3
Headlight beam, adjusting ........................................... 8-50
Headlight bulb, replacing ............................................. 8-48IIdentification numbers .................................................. 11-1
Indicator light and warning lights ................................... 4-2
Instruments, lights and switches .................................... 5-7LLabel locations ............................................................... 1-1
Light switch .................................................................... 4-4MMain switch .................................................................... 4-1
U18P66E0.book Page 1 Monday, May 16, 2011 4:23 PM