2021 YAMAHA YFZ450R brake

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Page 86 of 150

YAMAHA YFZ450R 2021  Owners Manual 9-1
9
EBU28789
PERIODIC MAINTENANCE AND ADJUSTMENT
EBU21677Periodic inspection, adjustment, and lubrication
will keep your vehicle in the safest and most effi-
cient condition possible. Safety is an o

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YAMAHA YFZ450R 2021  Owners Manual 9-5
9
EBU2186EPeriodic maintenance chart: General maintenance and lubricationTIPFor ATVs not equipped with an odometer or an hour meter, follow the month maintenance intervals in-
stead.
 For od

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 93 of 150

YAMAHA YFZ450R 2021  Owners Manual 9-8
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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 a

Page 94 of 150

YAMAHA YFZ450R 2021  Owners Manual 9-9
9• Replace the brake hoses every four years and if cracked or damaged.
 UBKD60E0.book  Page 9  Wednesday, November 18, 2020  8:39 AM

Page 113 of 150

YAMAHA YFZ450R 2021  Owners Manual 9-28
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EBU29705Adjusting the throttle lever free playPeriodically check the throttle lever free play and
adjust if necessary.1. Slide the rubber cover back.
2. Loosen the locknut.
3. To increase the t

Page 114 of 150

YAMAHA YFZ450R 2021  Owners Manual 9-29
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WARNING
EWB02572Operating with improperly serviced or adjust-
ed brakes could lead to a loss in braking ability
and an accident. EBU24132Checking the front and rear brake padsThe front and rear

Page 115 of 150

YAMAHA YFZ450R 2021  Owners Manual 9-30
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EBU29502Checking the brake fluid levelBefore riding, check that the brake fluid is above
the minimum level mark. Check the brake fluid lev-
el with the top of the reservoir level. Replenish the