REAR BRAKE
4-28
Refer to “CHECKING THE REAR BRAKE
PADS” on page 3-25.
4. Pour brake fluid to the brake fluid reservoir up
to the specified level.
WARNING
EWA13090
• Use only the designated brake fluid. Other
brake fluids may cause the rubber seals to
deteriorate, causing leakage and poor
brake performance.
• Refill with the same type of brake fluid that
is already in the system. Mixing brake fluids
may result in a harmful chemical reaction,
leading to poor brake performance.
• When refilling, be careful that water does
not enter the brake fluid reservoir. Water
will significantly lower the boiling point of
the brake fluid and could cause vapor lock.
NOTICE
ECA13540
Brake fluid may damage painted surfaces
and plastic parts. Therefore, always clean up
any spilt brake fluid immediately.
5. Bleed:
•
Brake system
Refer to “BLEEDING THE BRAKE SYSTEM”
on page 3-21.
6. Check:
•
Brake fluid level
The minimum level mark “a” or below
Add.
Refer to “CHECKING THE BRAKE FLUID
LEVEL” on page 3-26.
7. Check:
•
Brake pedal operation
A softy or spongy feeling
Bleed the brake
system.
Refer to “BLEEDING THE BRAKE SYSTEM”
on page 3-21.
EAM30048
REMOVING THE REAR BRAKE MASTER
CYLINDER
TIP
Before removing the rear brake master cylinder,
drain the brake fluid from the entire brake sys-
tem.
1. Remove:
•
Union bolt
•
Copper washer
•
Brake hose
TIP
To drain any remaining brake fluid, place a con-
tainer under the master cylinder and the end of
the brake hose.
EAM30049
CHECKING THE REAR BRAKE MASTER
CYLINDER
1. Check:
•
Brake master cylinder “1”
Damage/scratches/wear
Replace.
•
Brake fluid delivery passages “2”
(brake master cylinder body)
Obstruction
Blow out with compressed air.
2. Check:
•
Brake master cylinder kit
Damage/wear
Replace.
3. Check:
•
Brake master cylinder reservoir cap
Crack/damage
Replace.
•
Brake master cylinder reservoir diaphragm
holder
•
Brake master cylinder reservoir diaphragm
Crack/damage
Replace.
Brake pad pin
17 N·m (1.7 kgf·m, 13 lb·ft)
Brake pad pin plug
2.5 N·m (0.25 kgf·m, 1.8 lb·ft)
Specified brake fluid
DOT 4
T
R
.
.
a
1
2
Summary of Contents for YZ 2019 Series
Page 6: ...EAM20162 YAMAHA MOTOR CORPORATION U S A YZ MOTORCYCLE LIMITED WARRANTY...
Page 10: ......
Page 40: ...MOTORCYCLE CARE AND STORAGE 1 28...
Page 63: ...LUBRICATION POINTS AND LUBRICANT TYPES 2 22...
Page 66: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 25...
Page 68: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 27...
Page 70: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 29...
Page 72: ...CABLE ROUTING DIAGRAM 2 31 EAM20152 CABLE ROUTING DIAGRAM...
Page 74: ...CABLE ROUTING DIAGRAM 2 33...
Page 76: ...CABLE ROUTING DIAGRAM 2 35...
Page 78: ...CABLE ROUTING DIAGRAM 2 37...
Page 80: ...CABLE ROUTING DIAGRAM 2 39...
Page 82: ...CABLE ROUTING DIAGRAM 2 41...
Page 84: ...CABLE ROUTING DIAGRAM 2 43...
Page 86: ...CABLE ROUTING DIAGRAM 2 45...
Page 126: ...ELECTRICAL SYSTEM 3 38...
Page 177: ...FRONT FORK 4 49 1...
Page 196: ...CHAIN DRIVE 4 68...
Page 217: ...CAMSHAFT 5 18 Spark plug Spark plug 13 N m 1 3 kgf m 9 6 lb ft T R...
Page 237: ...ELECTRIC STARTER 5 38...
Page 256: ...OIL PUMP AND BALANCER GEAR 5 57 a 2 10 b 2 9 1 b 5 3 a 4 10 5 9 3 E c d 6 7 8 8 b 6...
Page 262: ...GENERATOR AND STARTER CLUTCH 5 63 1 a 3 3 2 4...
Page 276: ...TRANSMISSION 5 77...
Page 284: ...WATER PUMP 6 7...
Page 290: ...FUEL TANK 7 5 A Left B Right 1 1 A 0 mm 0 in B 1 1 15 mm 0 59 in...
Page 296: ...THROTTLE BODY 7 11...
Page 299: ......
Page 313: ...CHARGING SYSTEM 8 14...
Page 343: ...FUEL INJECTION SYSTEM 8 44...
Page 347: ...FUEL PUMP SYSTEM 8 48...
Page 348: ...ELECTRICAL COMPONENTS 8 49 EAM20147 ELECTRICAL COMPONENTS 9 10 1 3 2 4 5 6 7 8...
Page 350: ...ELECTRICAL COMPONENTS 8 51 11 10 9 2 3 1 6 7 8 4 5...
Page 352: ...ELECTRICAL COMPONENTS 8 53 EAM30289 CHECKING THE SWITCHES 4 1 3 2 B B Sb B B B B B B B B...
Page 368: ...ELECTRICAL COMPONENTS 8 69...
Page 376: ...LIST OF SELF DIAGNOSTIC AND FAIL SAFE ACTIONS 9 7...