Yamaha TZ125M1 Owner's Service Manual page 126

PRIMARY DRIVEN GEAR, PRIMARY DRIVE GEAR
AND BALANCER SHAFT
EC4D4000
INSPECTION
EC484300
Primary drive gear and primary driven gear
1. Inspect:
• Primary drive gear 1
• Primary driven gear 2
Wear/Damage ≥ Replace.
EC4D4200
Balancer weight gear and balancer drive
gear
1. Inspect:
• Balancer weight gear 1
• Balancer drive gear 2
Wear/Damage ≥ Replace.
EC4D4300
Crankcase cover (right)
1. Inspect:
• Contacting surface
Scratches ≥ Replace.
• Crankcase cover (right)
Cracks/Damage ≥ Replace.
• Oil seal 1
Wear/Damage ≥ Replace.
EC4D4400
Balancer shaft and weight
1. Inspect:
• Balancer shaft 1
Bend/Wear/Damage ≥ Replace.
• Weight 2
Damage ≥ Replace.
EC4D5000
ASSEMBLY AND INSTALLATION
EC4D5122
Balancer shaft and primary drive gear
1. Install:
• Balancer shaft 1
NOTE:
When installing the balancer shaft, align the
center of the balancer shaft weight a along
the line connecting the centers of the crank-
shaft and balancer shaft.
4-38
ENG