OIL PUMP
5-62
EAM30485
REMOVING THE OIL PUMP
1. Remove:
•
Oil pump
2. Loosen:
•
Balancer nut “1”
•
Primary drive gear nut “2”
•
Balancer weight gear nut “3”
TIP
Place an aluminum plate “a” between the teeth
of the balancer drive gear “4” and balancer
weight gear “5”.
3. Check:
•
Primary drive gear “1”
•
Balancer drive gear “2”
•
Balancer weight gear “3”
Wear/damage
Replace.
4. Check:
•
Balancer
Crack/damage
Replace.
EAM30136
CHECKING THE OIL PUMP
1. Check:
•
Oil pump cover
•
Oil pump drive shaft
•
Oil pump housing
Cracks/damage/wear
Replace the defec-
tive part(s).
2. Measure:
•
Inner-rotor-to-outer-rotor-tip clearance “a”
•
Outer-rotor-to-oil-pump-housing clearance
“b”
•
Oil-pump-housing-to-inner-rotor-and-outer-
rotor clearance “c”
Out of specification
Replace the oil pump.
1
1
1
a
a
a
5
5
4
2
4
2
a
a
a
4
4
5
5
3
3
2
1
3
Summary of Contents for YZ 2020 Series
Page 6: ...EAM20162 YAMAHA MOTOR CORPORATION U S A YZ MOTORCYCLE LIMITED WARRANTY...
Page 10: ......
Page 50: ...ENGINE SPECIFICATIONS 2 5 Throttle grip free play 3 0 6 0 mm 0 12 0 24 in...
Page 62: ...CABLE ROUTING DIAGRAM 2 17 EAM20152 CABLE ROUTING DIAGRAM Frame and engine left side view...
Page 64: ...CABLE ROUTING DIAGRAM 2 19 Frame and engine right side view...
Page 66: ...CABLE ROUTING DIAGRAM 2 21 Handlebar front view...
Page 68: ...CABLE ROUTING DIAGRAM 2 23 Frame and engine top view...
Page 70: ...CABLE ROUTING DIAGRAM 2 25 Frame and battery top view...
Page 72: ...CABLE ROUTING DIAGRAM 2 27 Rear brake right side view...
Page 74: ...CABLE ROUTING DIAGRAM 2 29...
Page 112: ...ELECTRICAL SYSTEM 3 36...
Page 154: ...HANDLEBAR 4 40 Throttle grip free play 3 0 6 0 mm 0 12 0 24 in...
Page 167: ...FRONT FORK 4 53 1...
Page 187: ...INSTALLING THE TRANSMISSION 5 75...
Page 190: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 3 1 Oil filter element 2 Oil pump...
Page 191: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 4 1 Intake camshaft 2 Exhaust camshaft...
Page 274: ...WATER PUMP 6 9...
Page 284: ...THROTTLE BODY 7 9...
Page 287: ......
Page 288: ...IGNITION SYSTEM 8 1 EAM20142 IGNITION SYSTEM EAM30277 CIRCUIT DIAGRAM...
Page 292: ...ELECTRIC STARTING SYSTEM 8 5 EAM20143 ELECTRIC STARTING SYSTEM EAM30279 CIRCUIT DIAGRAM...
Page 296: ...CHARGING SYSTEM 8 9 EAM20144 CHARGING SYSTEM EAM30282 CIRCUIT DIAGRAM...
Page 299: ...CHARGING SYSTEM 8 12...
Page 300: ...SIGNALING SYSTEM 8 13 EAM20154 SIGNALING SYSTEM EAM30348 CIRCUIT DIAGRAM...
Page 304: ...FUEL INJECTION SYSTEM 8 17 EAM20145 FUEL INJECTION SYSTEM EAM30284 CIRCUIT DIAGRAM...
Page 328: ...FUEL PUMP SYSTEM 8 41 EAM20146 FUEL PUMP SYSTEM EAM30287 CIRCUIT DIAGRAM...
Page 360: ...SELF DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE 9 15...
Page 370: ...CHASSIS 10 9...
Page 372: ......
Page 375: ...YZ250FXL1 2020 WIRING DIAGRAM BAJ 28199 10_WD indd 1 2019 07 10 9 35 33...
Page 376: ...YZ250FXL1 2020 WIRING DIAGRAM BAJ 28199 10_WD indd 2 2019 07 10 9 35 33...