light YAMAHA YFZ450R 2021 Owner's Manual

9-27
93. Tap the tailpipe lightly, and then use a wire
brush to remove any carbon deposits from
the spark arrester portion of the tailpipe and
inside of the tailpipe housing. 4. Install the gasket, tailpipe, and retainer and
align the bolt holes.
5. Install the bolts and tighten them to the spec- ified torque.
6. Install the tailpipe cover and align the bolt holes.
7. Install the bolts and tighten them to the spec- ified torque.
1. Bolt
2. Retainer
3. Tailpipe
4. Gasket1
2
3
4
1
1. Tailpipe
2. Spark arresterTightening torque:Retainer bolt:10 N·m (1.0 kgf·m, 7.4 lb·ft)
1
2
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9
8. Turn in the adjusting bolt at the rear brake cal-
iper until it feels tight, then turn it out 1/8 turn
and tighten its locknut to the specified torque.
NOTICE: When tightening the locknut,
hold the adjusting bolt with a wrench so
that it does not turn together with the lock-
nut.
[ECB00522]
WARNING
EWB02091Operating with improperly serviced or adjust-
ed brakes could cause the brakes to malfunc-
tion, resulting in reduced braking
performance. This could increase the chance
of a collision or accident. After adjusting the
parking brake free play, block the rear of the
ATV off the ground and spin the rear wheels.
Check to make sure there is no brake drag. If
brake drag is noticed, perform the adjustment
again.
EBU24744Brake light switchesThe brake light, which is activated by the brake
pedal and brake lever, should come on just before
braking takes effect.
The brake light switch for the brake pedal can be
adjusted as follows, but the front brake light
switch should be adjusted by a Yamaha dealer.
Turn the rear brake light switch adjusting nut while
holding the brake light switch in place. To make
the brake light come on earlier, turn the adjusting
nut in direction (a). To make the brake light come
on later, turn the adjusting nut in direction (b).
Tightening torque:
Locknut (rear brake caliper):16 N·m (1.6 kgf·m, 12 lb·ft)1. Rear brake light switch
2. Rear brake light switch adjusting nut
1
2(a) (b)
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9
EBU29963Replacing the fuseThe fuse holder is located under the seat. (See
page 5-10.)
If the fuse is blown, replace it as follows.1. Turn the key to “ ” (off) and turn off all elec- trical circuits.NOTICEECB00641To prevent accidental short-circuiting, turn off
the main switch when checking or replacing a
fuse.
2. Remove the blown fuse, and then install anew 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]
3. Turn the key to “ ” (on) and turn on the elec- trical circuits to check if the devices operate.
4. If the fuse immediately blows again, have a Yamaha dealer check the electrical system.EBU30873Replacing a headlight bulbIf a headlight bulb burns out, replace it with the
specified bulb as follows.1. Remove the headlight unit by removing the bolt and pulling the headlight unit outward as
shown.
1. Fuse
2. Spare fuse
1
2
Specified fuse:20.0 A
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9-47
92. Remove the bulb cover. 3. Remove the socket by pushing it in and turn-
ing it counterclockwise, and then remove the
burnt-out bulb.
4. Place a new headlight bulb into position. NOTICE: Do not touch the glass part of the
bulb. Oil from your fingers or other con-
tamination will adversely affect the trans-
parency of the glass, luminosity of the
bulb, and bulb life. Thoroughly clean off
any dirt and fingerprints using a cloth
moistened with alcohol or thinner.
[ECB00653]
1. Headlight unit
2. Bolt
1. Bulb cover
1
2
1
1. Socket
1
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9
5. Install the socket by pushing it in and turning
it clockwise.
6. Install the bulb cover.
TIPWhen installing the bulb cover, make sure the
“TOP” mark faces upwards.
7. Place the headlight unit in the original posi- tion, and then install the bolt.
1. Do not touch the glass part of the bulb.
1. Bulb cover
2. “TOP” mark
12
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9-49
98. Adjust the headlight beam if necessary.
EBU25562Adjusting a headlight beamNOTICEECB00691It is advisable to have a Yamaha dealer make
this adjustment. To raise a headlight beam, turn the headlight
beam adjusting bolt in direction (a).
To lower a headlight beam, turn the adjusting bolt
in direction (b).
EBU26922Brake/tail lightThis model is equipped with an LED type of
brake/tail light.
If the brake/tail light does not come on, have a
Yamaha dealer check it.EBU25653Removing a wheel1. Park the ATV on a level surface.
2. Loosen the wheel nuts.
3. Elevate the ATV and place a suitable stand under the frame.
4. Remove the nuts from the wheel.
5. Remove the wheel.
1. Headlight beam adjusting bolt
1
(a)
(b)
1. Wheel nut
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9
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. UBKD60E0.book Page 51 Wednesday, November 18, 2020 8:39 AM

11-4
11
Spring:Coil spring
Shock absorber: Gas-hydraulic damper
Wheel travel:
250 mm (9.9 in)Rear suspension:Type:Swingarm (link suspension)
Spring:
Coil spring
Shock absorber: Gas-hydraulic damper
Wheel travel: 280 mm (11.0 in)Electrical system:System voltage:12 V
Ignition system: TCI
Charging system:
AC magnetoBattery:Model:YTZ7S
Voltage, capacity:
12 V, 6.0 AhLights:Headlight:T19L, 30.0 W/30.0 W Brake/tail light:
LED
Neutral indicator light: LED
Fuel level warning light:
LED
Coolant temperature warning light: LED
Engine trouble warning light: LED
Fuses:Main fuse:20.0 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-
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12
INDEX
AAccessories and loading ................................................ 7-5
Air filter element, cleaning ........................................... 9-22BBattery ......................................................................... 9-43
Brake and clutch levers, checking and lubricating ...... 9-39
Brake fluid, changing ................................................... 9-31
Brake fluid level, checking ........................................... 9-30
Brake lever ..................................................................... 5-5
Brake lever free play, checking the front ..................... 9-32
Brake light switches ..................................................... 9-34
Brake pads, checking the front and rear ..................... 9-29
Brake pedal .................................................................... 5-6
Brake pedal, checking and lubricating ........................ 9-40
Brake pedal height, checking ...................................... 9-32
Brakes .......................................................................... 9-28
Brakes, front and rear .................................................... 6-4
Brake/tail light .............................................................. 9-49CCables, checking and lubricating ................................ 9-38
Chassis fasteners .......................................................... 6-7
Cleaning ....................................................................... 10-1
Clutch lever .................................................................... 5-5
Clutch lever free play, adjusting .................................. 9-35
Coolant .................................................................6-4, 9-20
Coolant, changing ........................................................ 9-22
Coolant temperature warning light ................................ 5-2
Cowling and panels, removing and installing .............. 9-10
DDrive chain ..................................................................... 6-5
Drive chain, lubricating ................................................ 9-38
Drive chain slack .......................................................... 9-36EEngine break-in .............................................................. 7-4
Engine oil ....................................................................... 6-4
Engine oil and oil filter element .................................... 9-14
Engine, start ................................................................... 7-1
Engine stop switch ........................................................ 5-3
Engine trouble warning light .......................................... 5-2FFuel ......................................................................... 5-9, 6-4
Fuel level warning light .................................................. 5-2
Fuel tank cap ................................................................. 5-8
Fuse, replacing ............................................................ 9-46HHandlebar position, adjusting ...................................... 5-23
Handlebar switches ....................................................... 5-3
Headlight beam, adjusting ........................................... 9-49
Headlight bulb, replacing ............................................. 9-46IIdentification numbers ................................................... 1-1
Indicator light and warning lights ................................... 5-1
Instruments, lights and switches ................................... 6-7LLabel locations ............................................................... 2-1
Light switch ................................................................... 5-3
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12
MMain switch .................................................................... 5-1
Maintenance and lubrication chart ................................9-5
Maintenance chart, emission control system ................ 9-3
Model label ..................................................................... 1-1NNeutral indicator light .....................................................5-1OOwner’s Manual and tool kit .......................................... 9-2PParking ........................................................................... 7-4
Parking brake free play, adjusting ............................... 9-33
Parking brake lever ........................................................ 5-6
Parking on a slope ......................................................... 7-5
Part locations ................................................................. 4-1RRiding your ATV ............................................................. 8-1SSafety information .......................................................... 3-1
Seat .............................................................................. 5-10
Shifting ........................................................................... 7-2
Shift pedal ...................................................................... 5-7
Shift pedal, checking ...................................................9-40
Shock absorber, rear ...................................................5-15
Shock absorbers, front ................................................ 5-11
Spark arrester, cleaning ............................................... 9-26
Spark plug, checking ...................................................9-13
Specifications ............................................................... 11-1
Speed limiter .................................................................. 5-4
Start switch .................................................................... 5-3
Steering shaft, lubricating ............................................ 9-42Storage ........................................................................ 10-2
Suspension, lubricating
the upper and lower arm
pivots ......................................................................... 9-41
Swingarm pivots, lubricating ....................................... 9-41
TThrottle lever .......................................................... 5-4, 6-5
Throttle lever free play, adjusting ................................. 9-28
Tires ............................................................................... 6-5
Troubleshooting ........................................................... 9-50
Troubleshooting charts ................................................ 9-52VValve clearance ............................................................ 9-28
Vehicle identification number ......................................... 1-1WWheel hub bearings, checking ..................................... 9-40
Wheel, installing ........................................................... 9-50
Wheel, removing .......................................................... 9-49YYamalube ..................................................................... 9-20
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