Yamaha YZ125(T)/T1 Owner's Service Manual page 262

CYLINDER HEAD, CYLINDER AND PISTON
EC474831
Power valve
1. Inspect:
9 Power valve 1,2 1
Wear/Damage ¡ Replace.
Carbon deposits ¡Remove.
9 Valve holder 2
9 Link lever 3
9 Valve shaft 4
9 Collar 5
Wear/Damage ¡ Replace.
9 Spring 6
Broken ¡ Replace.
EC474901
Power valve hole on cylinder
1. Remove:
9 Carbon deposits
From power valve hole surface a.
NOTE:
Do not use a sharp instrument. Avoid scratching
the aluminum.
EC475000
ASSEMBLY AND INSTALLATION
EC4751A1
Power valve
1. Install:
9 Power valve 1 1
9 Power valve 2 2
9 Bolt (power valve) 3
NOTE:
Install the power valve at cut-away faced a for
down side.
4-25
ENG
8 Nm (0.8 m•kg, 5.8 ft•lb)