Yamaha TZ250M1 Owner's Service Manual page 139

PRIMARY DRIVEN GEAR, PRIMARY DRIVE GEAR
AND BALANCER SHAFT
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.
EC4D4500
Balancer shaft
1. Inspect:
• Balancer shaft 1
Bend/Wear/Damage ≥ Replace.
EC4D5000
ASSEMBLY AND INSTALLATION
EC4D5130
Balancer shaft and primary drive gear
1. Install:
• Balancer shaft 1
• Collar 2
2. Install:
• Gasket [crankcase cover (left)]N
• Crankcase cover (left) 1
• Bolt [crankcase cover (left)] 2
NOTE:
Install the gasket and crankcase cover (left)
with their recesses a facing the rotor 3.
4-41
ENG
11 Nm (1.1 mdkg, 8.0 ftdlb)
T