Yamaha YZ 2023 Series, Owner'S Service Manual

Page: 238 / 378

CLUTCH
5-51
ratic clutch operation.
EAM30113
CHECKING THE CLUTCH BOSS
1. Check:
•
Clutch boss splines
Damage/pitting/wear

Replace the clutch
boss.
TIP
Pitting on the clutch boss splines will cause er-
ratic clutch operation.
EAM30114
CHECKING THE PRESSURE PLATE
1. Check:
•
Pressure plate
Crack/damage

Replace.
EAM30115
CHECKING THE PUSH LEVER SHAFT
1. Check:
•
Push lever shaft
Wear/damage

Replace.
EAM30484
CHECKING THE PUSH RODS
1. Check:
•
Push rod 1 “1”
• Bearing/Washer “2”
•
Push rod 2 “3”
• Ball “4”
Cracks/damage/wear

Replace.
2. Measure:
•
Push rod 2 bending limit
Out of specification

Replace.
EAM30117
CHECKING THE PRIMARY DRIVE GEAR
1. Check:
•
Primary drive gear
Damage/wear

Replace the primary drive
and primary driven gears as a set.
Excessive noise during operation

Replace
the primary drive and primary driven gears as
a set.
2. Check:
• Primary-drive-gear-to-primary-driven-gear
free play
Free play exists

Replace the primary drive
and primary driven gears as a set.
EAM30118
CHECKING THE PRIMARY DRIVEN GEAR
1. Check:
• Primary driven gear
Damage/wear

Replace the primary drive
and primary driven gears as a set.
Excessive noise during operation

Replace
the primary drive and primary driven gears as
a set.
EAM30121
INSTALLING THE CLUTCH
1. Install:
•
Dowel pin “1”
• Gasket “2”
1 1
Push rod bending limit
0.30 mm (0.012 in)
1 1 1
2 2
4 3
5 4
New