4 - 47
ENG
PRIMARY AND SECONDARY SHEAVES
CHECKING THE PRIMARY SHEAVE
1.Check:
●
Weight outside diameter
a
Out of specification
→
Replace the weight.
Weight outside diameter:
30 mm (1.18 in)
<Limit>: 29.5 mm (1.16 in)
2.Check:
●
Primary pulley slider
●
Primary sliding sheave splines
Wear/cracks/damage
→
Replace.
●
Spacer
●
Primary pulley cam
Cracks/damage
→
Replace.
3.Check:
●
Primary sliding sheave
●
Primary fixed sheave
Cracks/damage
→
Replace.
CHECKING THE SECONDARY SHEAVE
1.Check:
●
Secondary fixed sheave smooth operation
●
Secondary sliding sheave smooth operation
Scratches/damage
→
Replace as a set.
2.Check:
●
Torque cam groove
1
Wear/damage
→
Replace.
3.Check:
●
Guide pin
2
Wear/damage
→
Replace.
4.Check:
●
Secondary sheave spring
Damage
→
Replace.
5.Measure:
●
Secondary sheave spring free length
a
Out of specification
→
Replace the
secondary sheave spring.
Free length:
121.4 mm (4.78 in)
<Limit>: 115.33 mm (4.54 in)
Summary of Contents for YFM45FAR
Page 1: ...YFM45FAR YFM450FAR 5ND2 AE1 SERVICE MANUAL ...
Page 2: ......
Page 8: ......
Page 9: ...GEN INFO 1 ...
Page 11: ...GEN INFO ...
Page 27: ......
Page 28: ...SPEC 2 ...
Page 30: ...SPEC ...
Page 41: ...2 11 SPEC Cylinder head tightening sequence Item Standard Limit MAINTENANCE SPECIFICATIONS ...
Page 53: ...2 23 SPEC 1 Radiator 2 Thermostat È To coolant reservoir COOLANT FLOW DIAGRAMS ...
Page 54: ...2 24 SPEC OIL FLOW DIAGRAMS 1 Camshaft 2 Crankshaft 3 Drive axle OIL FLOW DIAGRAMS ...
Page 55: ...2 25 SPEC 1 Oil filter OIL FLOW DIAGRAMS ...
Page 56: ...2 26 SPEC 1 Oil pump 2 Oil strainer OIL FLOW DIAGRAMS ...
Page 67: ...CHK ADJ 3 ...
Page 133: ......
Page 134: ...ENG 4 ...
Page 138: ...ENG ...
Page 227: ...COOL 5 ...
Page 229: ...COOL ...
Page 241: ......
Page 242: ...CARB 6 ...
Page 244: ...CARB ...
Page 252: ......
Page 253: ...DRIV 7 ...
Page 255: ...DRIV ...
Page 287: ......
Page 288: ...CHAS 8 ...
Page 343: ...ELEC 9 ...
Page 345: ... ELEC ...
Page 348: ...9 3 ELEC CHECKING THE SWITCH ...
Page 393: ......
Page 394: ...TRBL SHTG 10 ...
Page 396: ...TRBL SHTG ...
Page 403: ......
Page 404: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN ...