wheel YAMAHA YFZ450 2019 Owner's Manual

8-37
8
TIPA rod can be obtained at a Yamaha dealer to make
this adjustment. 4. Shift the transmission into neutral.
5. To tighten the drive chain, push the ATVbackward. To loosen the drive chain, push
the ATV forward. NOTICE: Improper drive
chain slack will overload the engine as well
as other vital parts of the ATV and can lead
to drive chain slippage or breakage. To prevent this from occurring, keep the drive
chain slack within the specified limits.
[ECB00543]
6. Pull the rod out, and then tighten the rear axle
pinch bolts to the specified torque in the or-
der shown.
1. Rear wheel axle pinch bolt
2. Rod
3. Drive chain tensioner
4. Hole
3
4
2 11
Tightening torque:
Rear axle pinch bolt:21 N·m (2.1 kgf·m, 15 lb·ft)
3 1 2
4
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8
Clutch lever
EBUM0171Checking the shift pedalThe operation of the shift pedal should be
checked before each ride. If operation is not
smooth, have a Yamaha dealer check the vehicle.EBU28872Checking and lubricating the brake
pedalThe operation of the brake pedal should be
checked before each ride, and the pedal pivot
should be lubricated if necessary.
EBU24964Checking the wheel hub bearingsThe front and rear wheel hub bearings must be
checked at the intervals specified in the periodic
maintenance and lubrication chart. If there is play
in a wheel hub or if a wheel does not turn smooth-
ly, have a Yamaha dealer check the wheel hub
bearings.Recommended lubricant:
Lithium-soap-based grease
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88. 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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8
EBU27484Installing a wheel1. Install the wheel with the arrow mark pointingin the forward rotating direction of the wheel,
and then install the wheel nuts.
2. Lower the ATV to the ground.
3. Tighten the wheel nuts to the specified torques.
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.
1. Arrow mark
2. Forward rotating direction
3. Wheel nut
2
3
3
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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9
EBU25861
CLEANING AND STORAGE
EBU25903CleaningFrequent, thorough cleaning of your ATV will not
only enhance its appearance but will improve its
general performance and extend the useful life of
many components.1. Before cleaning the ATV: a. Block off the end of the exhaust pipe toprevent water entry. A plastic bag and
strong rubber band may be used.
b. Make sure the spark plug and all filler caps are properly installed.
2. If the engine case is excessively greasy, apply degreaser with a paint brush. Do not apply
degreaser to the chain, sprockets or wheel
axles.
3. Rinse the dirt and degreaser off with a garden hose. Use only enough pressure to do the
job. WARNING! Wet brakes may have re-
duced stopping ability, increasing the
chance of an accident. Test the brakes af-
ter washing. Apply the brakes several
times at slow speeds to let friction dry out
the linings.
[EWB02312]
NOTICE: Excessive wa- ter pressure may cause water seepage
and deterioration of wheel bearings,
brakes, transmission seals and electrical
devices. Many expensive repair bills have
resulted from improper high-pressure de-
tergent applications such as those avail-
able in coin-operated car washers.
[ECB00712]
4. Once most of the dirt has been hosed off,
wash all surfaces with warm water and mild,
detergent-type soap. An old toothbrush or
bottle brush is handy for hard-to-reach pla-
ces.
5. Rinse the ATV off immediately with clean wa- ter and dry all surfaces with a chamois, clean
towel or soft absorbing cloth.
6. Dry the chain and lubricate it to prevent it from rusting.
7. Clean the seat with a vinyl upholstery cleaner to keep the cover pliable and glossy.
8. Automotive type wax may be applied to all painted and chrome plated surfaces. Avoid
combination cleaner-waxes. Many contain
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9
6. 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.)
7. Cover the muffler outlet with a plastic bag to prevent moisture from entering it.
8. Remove the battery and fully charge it. (See page 8-43.)
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EBU25962
SPECIFICATIONS
Dimensions:Overall length:1795 mm (70.7 in)
Overall width: 1240 mm (48.8 in)
Overall height:
1065 mm (41.9 in)
Seat height: 810 mm (31.9 in)
Wheelbase: 1270 mm (50.0 in)
Ground clearance:
235 mm (9.3 in)
Minimum turning radius: 3.6 m (11.81 ft)
Maximum water depth: 35 cm (14 in)Weight:Curb weight:184.0 kg (406 lb)Loading:Maximum loading limit:
100.0 kg (220 lb)
(Total weight of rider, cargo, accessories, and tongue)Noise and vibration level:Noise level (77/311/EEC):85.9 dB(A) at 3750 r/min Uncertainty of measurement:
3.0 dB(A)
A-weighted sound power level: 99.0 dB(A) at 3750 r/min
Uncertainty of measurement: 3.0 dB(A)
Vibration on seat (EN1032, ISO5008):
Will not exceed 0.5 m/s²
Uncertainty of measurement: 0.1 m/s²
Vibration on handle (EN1032, ISO5008): 2.9 m/s²
Uncertainty of measurement:
0.8 m/s²
Engine:Combustion cycle:4-stroke
Cooling system:
Liquid cooled
Valve train: DOHC
Number of cylinders: Single cylinder
Displacement:
449 cm³
Bore × stroke:
95.0 × 63.4 mm (3.74 × 2.50 in)
Compression ratio: 11.8 : 1
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Secondary reduction ratio:2.714 (38/14)
Final drive: Chain
Clutch type:
Wet, multiple-disc
Transmission type: 5-speed
Gear ratio: 1st: 2.500 (35/14)
2nd: 2.000 (30/15)
3rd:
1.632 (31/19)
4th: 1.333 (28/21)
5th: 1.095 (23/21)Front tire:Size:AT21 x 7R10
Manufacturer/model: MAXXIS/MS21Rear tire:Size:AT20 x 10R9
Manufacturer/model: MAXXIS/MS22Tire air pressure (measured on cold tires):Vehicle load:0.0–100.0 kg (0–220 lb) Recommended:
Front:
35.0 kPa (0.350 kgf/cm², 5.0 psi)
Rear: 35.0 kPa (0.350 kgf/cm², 5.0 psi)
Minimum: Front: 32.0 kPa (0.320 kgf/cm², 4.6 psi)
Rear: 32.0 kPa (0.320 kgf/cm², 4.6 psi)
Front wheel:Rim size:10 X 5.5ATRear wheel:Rim size:
9 X 8.0ATFront brake:Type:Hydraulic disc brakeRear brake:Type:Hydraulic disc brakeBrake fluid:Specified brake fluid:
DOT 4Front suspension:Type:Double wishbone
Spring:
Coil spring
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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
MMain switch .................................................................... 4-1
Maintenance and lubrication chart ................................8-5
Maintenance chart, emission control system ................ 8-3
Model label ................................................................... 11-1NNeutral indicator light .....................................................4-1OOwner’s Manual and tool kit .......................................... 8-2PParking ........................................................................... 6-4
Parking brake free play, adjusting ............................... 8-33
Parking brake lever ........................................................ 4-6
Parking on a slope ......................................................... 6-5
Part locations ................................................................. 3-1RRiding your ATV ............................................................. 7-1SSafety information .......................................................... 2-1
Seat .............................................................................. 4-10
Shifting ........................................................................... 6-2
Shift pedal ...................................................................... 4-7
Shift pedal, checking ...................................................8-40
Shock absorber, rear ...................................................4-15
Shock absorbers, front ................................................ 4-11
Spark arrester, cleaning ............................................... 8-25
Spark plug, checking ...................................................8-13
Specifications ............................................................... 10-1
Speed limiter .................................................................. 4-4
Start switch .................................................................... 4-3
Steering shaft, lubricating ............................................ 8-42Storage .......................................................................... 9-2
Suspension, lubricating
the upper and lower arm
pivots ......................................................................... 8-41
Swingarm pivots, lubricating ....................................... 8-41
TThrottle lever .......................................................... 4-4, 5-5
Throttle lever free play, adjusting ................................. 8-28
Tires ............................................................................... 5-5
Troubleshooting ........................................................... 8-50
Troubleshooting charts ................................................ 8-52VValve clearance ............................................................ 8-28
Vehicle identification number ....................................... 11-1WWheel hub bearings, checking ..................................... 8-40
Wheel, installing ........................................................... 8-50
Wheel, removing .......................................................... 8-49
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