2021 YAMAHA YFZ450R tire pressure

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Page 18 of 150

YAMAHA YFZ450R 2021  Owners Manual 2-6
2
E10E5
  **.* kPa
  *.** kgf/cm²
 *.*  psi  **.* kPa
  *.** kgf/cm²
 *.*  psi
This unit contains high-pressure nitrogen 
gas.
Mishandling can cause an explosion. Do not 
incinerate, puncture or

Page 21 of 150

YAMAHA YFZ450R 2021  Owners Manual 3-3
3
technique described in this manual on level
ground. Avoid crossing the side of a steep hill if
possible.
 Always use proper procedures if you stall or roll
backwards when climbing a hill. To

Page 51 of 150

YAMAHA YFZ450R 2021  Owners Manual 6-2
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Front brake• Check operation. If soft or spongy, have Yamaha dealer bleed hy-
draulic system.
• Check brake pads for wear, and replace if necessary.
• Check brake fluid level in reservoir,

Page 54 of 150

YAMAHA YFZ450R 2021  Owners Manual 6-5
6Brake operation
Test the brakes at slow speed after starting out to
make sure they are working properly. If the brakes
do not provide proper braking performance,
check the brake pads for wear. (S

Page 55 of 150

YAMAHA YFZ450R 2021  Owners Manual 6-6
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Tire pressure gauge
A low-pressure tire gauge is included as standard
equipment with your vehicle. (See page 9-2.)
When using the tire pressure gauge, make two
measurements and use the second re

Page 87 of 150

YAMAHA YFZ450R 2021  Owners Manual 9-2
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EBU29573Owner’s Manual and tool kitBe sure to always keep the Owner’s Manual, the
tool kit and the low-pressure tire gauge with the
vehicle. Make sure to protect the Owner’s Manual
by putt

Page 91 of 150

YAMAHA YFZ450R 2021  Owners Manual 9-6
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5*Brake hoses • Check for cracks or other damage, and replace if 
necessary. √√√√
• Replace. Every 4 years
6 *Brake fluid • Change. Every 2 years
7 *Parking brake • Check operati

Page 144 of 150

YAMAHA YFZ450R 2021  Owners Manual 11-3
11
Drivetrain:Primary reduction ratio:2.652 (61/23)
Secondary reduction ratio:
2.714 (38/14)
Final drive: Chain
Clutch type: Wet, multiple-disc
Transmission type:
5-speed
Gear ratio: 1st:
2.500 (